science/dev/questions.forum.tsv

0	Making sense of principal component analysis, eigenvectors & eigenvalues
1	How to choose the number of hidden layers and nodes in a feedforward neural network?
2	What is the difference between likelihood and probability?
3	What is the intuition behind beta distribution?
4	What is the difference between test set and validation set?
5	Why square the difference instead of taking the absolute value in standard deviation?
6	Relationship between SVD and PCA. How to use SVD to perform PCA?
7	The Two Cultures: statistics vs. machine learning?
8	How to understand the drawbacks of K-means
9	Bayesian and frequentist reasoning in plain English
10	Explaining to laypeople why bootstrapping works
11	Python as a statistics workbench
12	When conducting multiple regression, when should you center your predictor variables & when should you standardize them?
13	What happens if the explanatory and response variables are sorted independently before regression?
14	What is your favorite data analysis cartoon?
15	What is the difference between fixed effect, random effect and mixed effect models?
16	Difference between logit and probit models
17	How to normalize data to 0-1 range?
18	Is normality testing essentially useless?
19	Why is Euclidean distance not a good metric in high dimensions?
20	What is the trade-off between batch size and number of iterations to train a neural network?
21	How to understand degrees of freedom?
22	Bagging, boosting and stacking in machine learning
23	Whats the difference between a confidence interval and a credible interval?
24	What is the meaning of p values and t values in statistical tests?
25	Famous statistical quotations
26	What does AUC stand for and what is it?
27	Why does a 95% Confidence Interval (CI) not imply a 95% chance of containing the mean?
28	What should I do when my neural network doesnt learn?
29	Interpretation of Rs lm() output
30	Is $R^2$ useful or dangerous?
31	How would you explain Markov Chain Monte Carlo (MCMC) to a layperson?
32	Is there any reason to prefer the AIC or BIC over the other?
33	How would you explain covariance to someone who understands only the mean?
34	What is batch size in neural network?
35	What are common statistical sins?
36	What are the differences between Factor Analysis and Principal Component Analysis?
37	How to know that your machine learning problem is hopeless?
38	How to choose a predictive model after k-fold cross-validation?
39	What is the best introductory Bayesian statistics textbook?
40	Algorithms for automatic model selection
41	What is the difference between data mining, statistics, machine learning and AI?
42	Which mean to use and when?
43	When (and why) should you take the log of a distribution (of numbers)?
44	How should I transform non-negative data including zeros?
45	ROC vs precision-and-recall curves
46	How to interpret a QQ plot
47	Why is Newtons method not widely used in machine learning?
48	What does the hidden layer in a neural network compute?
49	When should I use lasso vs ridge?
50	In linear regression, when is it appropriate to use the log of an independent variable instead of the actual values?
51	Can principal component analysis be applied to datasets containing a mix of continuous and categorical variables?
52	How to deal with perfect separation in logistic regression?
53	Rs lmer cheat sheet
54	What is a data scientist?
55	How do I get the number of rows of a data.frame in R?
56	How to summarize data by group in R?
57	PCA on correlation or covariance?
58	How exactly does one “control for other variables”?
59	Generative vs. discriminative
60	Intuitive explanation for dividing by $n-1$ when calculating standard deviation?
61	Why the sudden fascination with tensors?
62	What are the advantages of ReLU over sigmoid function in deep neural networks?
63	What intuitive explanation is there for the central limit theorem?
64	How to determine which distribution fits my data best?
65	Statistics Jokes
66	Why do we need sigma-algebras to define probability spaces?
67	A list of cost functions used in neural networks, alongside applications
68	Choice of K in K-fold cross-validation
69	Can a probability distribution value exceeding 1 be OK?
70	Training on the full dataset after cross-validation?
71	Whats the difference between variance and standard deviation?
72	What does 1x1 convolution mean in a neural network?
73	Cohens kappa in plain English
74	Why is accuracy not the best measure for assessing classification models?
75	Does Julia have any hope of sticking in the statistical community?
76	What is the influence of C in SVMs with linear kernel?
77	How does Keras Embedding layer work?
78	Gradient Boosting Tree vs Random Forest
79	How to intuitively explain what a kernel is?
80	Are large data sets inappropriate for hypothesis testing?
81	What is the difference between a consistent estimator and an unbiased estimator?
82	Whats the difference between Normalization and Standardization?
83	What is the difference between a neural network and a deep neural network, and why do the deep ones work better?
84	Bottom to top explanation of the Mahalanobis distance?
85	Whats the difference between principal component analysis and multidimensional scaling?
86	R vs SAS, why is SAS preferred by private companies?
87	When is it ok to remove the intercept in a linear regression model?
88	Deriving the conditional distributions of a multivariate normal distribution
89	The Sleeping Beauty Paradox
90	How to reverse PCA and reconstruct original variables from several principal components?
91	Amazon interview question—probability of 2nd interview
92	How are the standard errors of coefficients calculated in a regression?
93	Why are p-values uniformly distributed under the null hypothesis?
94	Correlations with unordered categorical variables
95	Does causation imply correlation?
96	How to choose between Pearson and Spearman correlation?
97	Help me understand Bayesian prior and posterior distributions
98	Is Facebook coming to an end?
99	Pearsons or Spearmans correlation with non-normal data
100	Obtaining knowledge from a random forest
101	Crossed vs nested random effects: how do they differ and how are they specified correctly in lme4?
102	When is R squared negative?
103	Batch gradient descent versus stochastic gradient descent
104	Whats the difference between probability and statistics?
105	Objective function, cost function, loss function: are they the same thing?
106	What is the difference between linear regression and logistic regression?
107	Why normalize images by subtracting datasets image mean, instead of the current image mean in deep learning?
108	Why L1 norm for sparse models
109	What is the difference between convolutional neural networks, restricted Boltzmann machines, and auto-encoders?
110	Should one remove highly correlated variables before doing PCA?
111	What if residuals are normally distributed, but y is not?
112	What is the difference between linear regression on y with x and x with y?
113	Why does a time series have to be stationary?
114	Percentile vs quantile vs quartile
115	What is the .632+ rule in bootstrapping?
116	Whats wrong with XKCDs Frequentists vs. Bayesians comic?
117	Differences between cross validation and bootstrapping to estimate the prediction error
118	Free statistical textbooks
119	What is the difference between off-policy and on-policy learning?
120	Difference between neural net weight decay and learning rate
121	Numerical example to understand Expectation-Maximization
122	Why does the Cauchy distribution have no mean?
123	Is there an intuitive interpretation of $A^TA$ for a data matrix $A$?
124	Removal of statistically significant intercept term increases $R^2$ in linear model
125	Nested cross validation for model selection
126	How would you explain the difference between correlation and covariance?
127	How does a Support Vector Machine (SVM) work?
128	What exactly are keys, queries, and values in attention mechanisms?
129	Most interesting statistical paradoxes
130	Books for self-studying time series analysis?
131	Clustering on the output of t-SNE
132	At each step of a limiting infinite process, put 10 balls in an urn and remove one at random. How many balls are left?
133	How to choose between t-test or non-parametric test e.g. Wilcoxon in small samples
134	When to use gamma GLMs?
135	Assessing approximate distribution of data based on a histogram
136	ASA discusses limitations of $p$-values - what are the alternatives?
137	Bias and variance in leave-one-out vs K-fold cross validation
138	If 900 out of 1000 people say a car is blue, what is the probability that it is blue?
139	Is it possible to have a pair of Gaussian random variables for which the joint distribution is not Gaussian?
140	Whats a real-world example of overfitting?
141	What skills are required to perform large scale statistical analyses?
142	Intuitive explanation of unit root
143	Comprehensive list of activation functions in neural networks with pros/cons
144	What misused statistical terms are worth correcting?
145	PCA and proportion of variance explained
146	Why are neural networks becoming deeper, but not wider?
147	Is it possible to train a neural network without backpropagation?
148	Where should I place dropout layers in a neural network?
149	What is an embedding layer in a neural network?
150	Difference between confidence intervals and prediction intervals
151	Maximum Likelihood Estimation (MLE) in layman terms
152	Detecting a given face in a database of facial images
153	How do you calculate precision and recall for multiclass classification using confusion matrix?
154	tanh activation function vs sigmoid activation function
155	KL divergence between two univariate Gaussians
156	Difference between standard error and standard deviation
157	What does a closed-form solution mean?
158	US Election results 2016: What went wrong with prediction models?
159	When should linear regression be called machine learning?
160	Calculating optimal number of bins in a histogram
161	What is covariance in plain language?
162	How to select kernel for SVM?
163	Conditional inference trees vs traditional decision trees
164	How to annoy a statistical referee?
165	T-test for non normal when N>50?
166	What loss function for multi-class, multi-label classification tasks in neural networks?
167	What are the main differences between K-means and K-nearest neighbours?
168	What is rank deficiency, and how to deal with it?
169	Best series of colors to use for differentiating series in publication-quality plots
170	Why use gradient descent for linear regression, when a closed-form math solution is available?
171	Locating freely available data samples
172	Why does the Lasso provide Variable Selection?
173	Explain Curse of dimensionality to a child
174	What book would you recommend for non-statistician scientists?
175	Softmax vs Sigmoid function in Logistic classifier?
176	Does an unbalanced sample matter when doing logistic regression?
177	Diagnostic plots for count regression
178	Is this really how p-values work? Can a million research papers per year be based on pure randomness?
179	Whats the difference between correlation and simple linear regression?
180	Using k-fold cross-validation for time-series model selection
181	What is the difference between zero-inflated and hurdle models?
182	Including the interaction but not the main effects in a model
183	Validation Error less than training error?
184	How scared should we be about convergence warnings in lme4
185	Is there an intuitive explanation why multicollinearity is a problem in linear regression?
186	Interpreting plot.lm()
187	What is the best way to identify outliers in multivariate data?
188	What is the role of the logarithm in Shannons entropy?
189	What are examples where a naive bootstrap fails?
190	Why do we need to normalize data before principal component analysis (PCA)?
191	Simple algorithm for online outlier detection of a generic time series
192	Understanding variance intuitively
193	Can someone explain Gibbs sampling in very simple words?
194	What is the benefit of breaking up a continuous predictor variable?
195	Why isnt Logistic Regression called Logistic Classification?
196	Generate a random variable with a defined correlation to an existing variable(s)
197	What, precisely, is a confidence interval?
198	Why is ANOVA taught / used as if it is a different research methodology compared to linear regression?
199	Under what conditions does correlation imply causation?
200	How to choose nlme or lme4 R library for mixed effects models?
201	Is there a way to remember the definitions of Type I and Type II Errors?
202	Feature selection and cross-validation
203	How much do we know about p-hacking in the wild?
204	How to calculate Area Under the Curve (AUC), or the c-statistic, by hand
205	Who Are The Bayesians?
206	Essential data checking tests
207	What is the relation between k-means clustering and PCA?
208	Solving for regression parameters in closed-form vs gradient descent
209	When to use regularization methods for regression?
210	Convergence in probability vs. almost sure convergence
211	If mean is so sensitive, why use it in the first place?
212	How to efficiently manage a statistical analysis project?
213	If I have a 58% chance of winning a point, whats the chance of me winning a ping pong game to 21, win by 2?
214	Is it necessary to scale the target value in addition to scaling features for regression analysis?
215	Mean absolute error OR root mean squared error?
216	How to apply Neural Network to time series forecasting?
217	Feature selection for final model when performing cross-validation in machine learning
218	The Book of Why by Judea Pearl: Why is he bashing statistics?
219	Given the power of computers these days, is there ever a reason to do a chi-squared test rather than Fishers exact test?
220	Relationship between poisson and exponential distribution
221	How to produce a pretty plot of the results of k-means cluster analysis?
222	Correlation between a nominal (IV) and a continuous (DV) variable
223	Does the variance of a sum equal the sum of the variances?
224	How does the reparameterization trick for VAEs work and why is it important?
225	Why to optimize max log probability instead of probability
226	What is meant by a random variable?
227	Are there any examples where Bayesian credible intervals are obviously inferior to frequentist confidence intervals
228	How to compute precision/recall for multiclass-multilabel classification?
229	What is the lasso in regression analysis?
230	What is the difference between Multiclass and Multilabel Problem
231	How to tell if data is clustered enough for clustering algorithms to produce meaningful results?
232	Principled way of collapsing categorical variables with many levels?
233	Rules of thumb for modern statistics
234	How to sum a standard deviation?
235	How does the correlation coefficient differ from regression slope?
236	How should outliers be dealt with in linear regression analysis?
237	Loadings vs eigenvectors in PCA: when to use one or another?
238	What do you call an average that does not include outliers?
239	How is it possible that validation loss is increasing while validation accuracy is increasing as well
240	Kendall Tau or Spearmans rho?
241	When to use an offset in a Poisson regression?
242	What is a complete list of the usual assumptions for linear regression?
243	What is an uninformative prior? Can we ever have one with truly no information?
244	What is the single most influential book every statistician should read?
245	Is there a minimum sample size required for the t-test to be valid?
246	Calculating the parameters of a Beta distribution using the mean and variance
247	Resampling / simulation methods: monte carlo, bootstrapping, jackknifing, cross-validation, randomization tests, and permutation tests
248	Euclidean distance is usually not good for sparse data (and more general case)?
249	What are principal component scores?
250	An example: LASSO regression using glmnet for binary outcome
251	How to plot ROC curves in multiclass classification?
252	When to use Fisher and Neyman-Pearson framework?
253	What are modern, easily used alternatives to stepwise regression?
254	Line of best fit does not look like a good fit. Why?
255	Why should I be Bayesian when my model is wrong?
256	Why havent robust (and resistant) statistics replaced classical techniques?
257	What is the meaning of All models are wrong, but some are useful
258	Cross-Validation in plain english?
259	Subscript notation in expectations
260	What correlation makes a matrix singular and what are implications of singularity or near-singularity?
261	What is restricted maximum likelihood and when should it be used?
262	What do the residuals in a logistic regression mean?
263	Why is it possible to get significant F statistic (p<.001) but non-significant regressor t-tests?
264	What is the difference between a link function and a canonical link function for GLM
265	What are the big problems in statistics?
266	Mathematician wants the equivalent knowledge to a quality stats degree
267	Examples for teaching: Correlation does not mean causation
268	Why does k-means clustering algorithm use only Euclidean distance metric?
269	Why is ridge regression called ridge, why is it needed, and what happens when $\lambda$ goes to infinity?
270	When (if ever) is a frequentist approach substantively better than a Bayesian?
271	How to interpret an inverse covariance or precision matrix?
272	When is unbalanced data really a problem in Machine Learning?
273	XKCDs modified Bayes theorem: actually kinda reasonable?
274	Regarding p-values, why 1% and 5%? Why not 6% or 10%?
275	Probability of a single real-life future event: What does it mean when they say that Hillary has a 75% chance of winning?
276	Best way to present a random forest in a publication?
277	Why is the L2 regularization equivalent to Gaussian prior?
278	Mutual information versus correlation
279	Please explain the waiting paradox
280	Help me understand Support Vector Machines
281	How to generate uniformly distributed points on the surface of the 3-d unit sphere?
282	Choosing a clustering method
283	Can bootstrap be seen as a cure for the small sample size?
284	What is regularization in plain english?
285	Whatre the differences between PCA and autoencoder?
286	What is the reason that a likelihood function is not a pdf?
287	How to visualize what canonical correlation analysis does (in comparison to what principal component analysis does)?
288	Likelihood ratio vs Bayes Factor
289	Skills hard to find in machine learners?
290	Is there a name for the phenomenon of false positives counterintuitively outstripping true positives
291	Rules of thumb for minimum sample size for multiple regression
292	Explain the difference between multiple regression and multivariate regression, with minimal use of symbols/math
293	What algorithm should I use to detect anomalies on time-series?
294	How to interpret coefficients in a Poisson regression?
295	What is the difference between R functions prcomp and princomp?
296	What is an ablation study? And is there a systematic way to perform it?
297	Free resources for learning R
298	On the importance of the i.i.d. assumption in statistical learning
299	What is a kernel in plain English?
300	Famous statistical wins and horror stories for teaching purposes
301	How to obtain the p-value (check significance) of an effect in a lme4 mixed model?
302	Why not approach classification through regression?
303	What are disadvantages of using the lasso for variable selection for regression?
304	Diagnostics for logistic regression?
305	Shape of confidence interval for predicted values in linear regression
306	Is there any good reason to use PCA instead of EFA? Also, can PCA be a substitute for factor analysis?
307	What is the best way to remember the difference between sensitivity, specificity, precision, accuracy, and recall?
308	Variable selection for predictive modeling really needed in 2016?
309	What are the major philosophical, methodological, and terminological differences between econometrics and other statistical fields?
310	How does a simple logistic regression model achieve a 92% classification accuracy on MNIST?
311	What is global max pooling layer and what is its advantage over maxpooling layer?
312	What is wrong with extrapolation?
313	How exactly did statisticians agree to using (n-1) as the unbiased estimator for population variance without simulation?
314	Bayes regression: how is it done in comparison to standard regression?
315	Does no correlation imply no causality?
316	Do not vote, one vote will not reverse election results. What is wrong with this reasoning?
317	Impractical question: is it possible to find the regression line using a ruler and compass?
318	How and why do normalization and feature scaling work?
319	What are good initial weights in a neural network?
320	Multivariate multiple regression in R
321	Why does including latitude and longitude in a GAM account for spatial autocorrelation?
322	Why do neural network researchers care about epochs?
323	Whats so moment about moments of a probability distribution?
324	How to split the dataset for cross validation, learning curve, and final evaluation?
325	Practical questions on tuning Random Forests
326	What is an intuitive explanation for how PCA turns from a geometric problem (with distances) to a linear algebra problem (with eigenvectors)?
327	What is the intuition behind SVD?
328	Model for predicting number of Youtube views of Gangnam Style
329	What are some of the most common misconceptions about linear regression?
330	Unified view on shrinkage: what is the relation (if any) between Steins paradox, ridge regression, and random effects in mixed models?
331	What is the difference between discrete data and continuous data?
332	What are good RMSE values?
333	Good GUI for R suitable for a beginner wanting to learn programming in R?
334	Where to cut a dendrogram?
335	When to use generalized estimating equations vs. mixed effects models?
336	Having a job in data-mining without a PhD
337	Practical thoughts on explanatory vs. predictive modeling
338	Complete substantive examples of reproducible research using R
339	What method can be used to detect seasonality in data?
340	Understanding ROC curve
341	What is the difference between ZCA whitening and PCA whitening?
342	Do all interactions terms need their individual terms in regression model?
343	What makes the Gaussian kernel so magical for PCA, and also in general?
344	How should tiny $p$-values be reported? (and why does R put a minimum on 2.22e-16?)
345	A psychology journal banned p-values and confidence intervals; is it indeed wise to stop using them?
346	Removing duplicated rows data frame in R
347	How to actually plot a sample tree from randomForest::getTree()?
348	Understanding stratified cross-validation
349	How to tune hyperparameters of xgboost trees?
350	Basic question about Fisher Information matrix and relationship to Hessian and standard errors
351	What are some valuable Statistical Analysis open source projects?
352	Is this the solution to the p-value problem?
353	Covariance and independence?
354	How to use Pearson correlation correctly with time series
355	One-hot vs dummy encoding in Scikit-learn
356	Proper way of using recurrent neural network for time series analysis
357	How can adding a 2nd IV make the 1st IV significant?
358	If A and B are correlated with C, why are A and B not necessarily correlated?
359	Optimization when Cost Function Slow to Evaluate
360	Is there any *mathematical* basis for the Bayesian vs frequentist debate?
361	Whats the difference between feed-forward and recurrent neural networks?
362	What are good basic statistics to use for ordinal data?
363	Do the predictions of a Random Forest model have a prediction interval?
364	Is PCA followed by a rotation (such as varimax) still PCA?
365	What is the relationship between independent component analysis and factor analysis?
366	What problem do shrinkage methods solve?
367	How to normalize data between -1 and 1?
368	What are i.i.d. random variables?
369	How can an artificial neural network ANN, be used for unsupervised clustering?
370	What is a saturated model?
371	When are Log scales appropriate?
372	ImageNet: what is top-1 and top-5 error rate?
373	How is the minimum of a set of IID random variables distributed?
374	Understanding the role of the discount factor in reinforcement learning
375	Whats the difference between momentum based gradient descent and Nesterovs accelerated gradient descent?
376	What is the difference between a neural network and a deep belief network?
377	Assumptions regarding bootstrap estimates of uncertainty
378	Look and you shall find (a correlation)
379	What is a good, convincing example in which p-values are useful?
380	Performance metrics to evaluate unsupervised learning
381	Hold-out validation vs. cross-validation
382	Statistics interview questions
383	Central limit theorem for sample medians
384	Intuition on the Kullback–Leibler (KL) Divergence
385	Taleb and the Black Swan
386	Where did the frequentist-Bayesian debate go?
387	How to interpret F-measure values?
388	How to simulate data that satisfy specific constraints such as having specific mean and standard deviation?
389	Using principal component analysis (PCA) for feature selection
390	Which pseudo-$R^2$ measure is the one to report for logistic regression (Cox & Snell or Nagelkerke)?
391	Why bother with the dual problem when fitting SVM?
392	Why is the Jeffreys prior useful?
393	Intuitive explanation of Fisher Information and Cramer-Rao bound
394	How to visualize what ANOVA does?
395	Is the R language reliable for the field of economics?
396	Standard errors for lasso prediction using R
397	How can I help ensure testing data does not leak into training data?
398	Why would parametric statistics ever be preferred over nonparametric?
399	40,000 neuroscience papers might be wrong
400	References containing arguments against null hypothesis significance testing?
401	How much to pay? A practical problem
402	Regression with multiple dependent variables?
403	Random Forest - How to handle overfitting
404	What does orthogonal mean in the context of statistics?
405	Why is sample standard deviation a biased estimator of $\sigma$?
406	KL divergence between two multivariate Gaussians
407	What is translation invariance in computer vision and convolutional neural network?
408	Why is multicollinearity not checked in modern statistics/machine learning
409	Variables are often adjusted (e.g. standardised) before making a model - when is this a good idea, and when is it a bad one?
410	What is the difference between a partial likelihood, profile likelihood and marginal likelihood?
411	Why is the square root transformation recommended for count data?
412	Real-life examples of moving average processes
413	Why do neural networks need so many training examples to perform?
414	Is this chart showing the likelihood of a terrorist attack statistically useful?
415	Maximum likelihood method vs. least squares method
416	Why is it that natural log changes are percentage changes? What is about logs that makes this so?
417	Why is logistic regression a linear classifier?
418	Why is ANOVA equivalent to linear regression?
419	Why only three partitions? (training, validation, test)
420	Why does ridge estimate become better than OLS by adding a constant to the diagonal?
421	What is the most surprising characterization of the Gaussian (normal) distribution?
422	Criticism of Pearls theory of causality
423	What is the difference between a nested and a non-nested model?
424	Why do we minimize the negative likelihood if it is equivalent to maximization of the likelihood?
425	Clustering with a distance matrix
426	Does it make sense to add a quadratic term but not the linear term to a model?
427	Derivation of closed form lasso solution
428	Reduce Classification Probability Threshold
429	Explain the xkcd jelly bean comic: What makes it funny?
430	Do we need a global test before post hoc tests?
431	How small a quantity should be added to x to avoid taking the log of zero?
432	Efficient online linear regression
433	Are bayesians slaves of the likelihood function?
434	Who created the first standard normal table?
435	List of situations where a Bayesian approach is simpler, more practical, or more convenient
436	Why does collecting data until finding a significant result increase Type I error rate?
437	Wald test for logistic regression
438	Test if two binomial distributions are statistically different from each other
439	What is the difference in Bayesian estimate and maximum likelihood estimate?
440	Perform feature normalization before or within model validation?
441	Is there a difference between controlling for and ignoring other variables in multiple regression?
442	If we fail to reject the null hypothesis in a large study, isnt it evidence for the null?
443	A more definitive discussion of variable selection
444	What are the worst (commonly adopted) ideas/principles in statistics?
445	How to statistically compare two time series?
446	What is the effect of having correlated predictors in a multiple regression model?
447	What is a contrast matrix?
448	Software needed to scrape data from graph
449	Examples of Bayesian and frequentist approach giving different answers
450	Machine learning cookbook / reference card / cheatsheet?
451	Brain teaser: How to generate 7 integers with equal probability using a biased coin that has a pr(head) = p?
452	What does Scientists rise up against statistical significance mean? (Comment in Nature)
453	Two-tailed tests... Im just not convinced. Whats the point?
454	Is the hybrid between Fisher and Neyman-Pearson approaches to statistical testing really an incoherent mishmash?
455	Interpreting Residual and Null Deviance in GLM R
456	Variance of product of multiple independent random variables
457	Is standardization needed before fitting logistic regression?
458	Under what conditions should Likert scales be used as ordinal or interval data?
459	Questions about how random effects are specified in lmer
460	Should I use a categorical cross-entropy or binary cross-entropy loss for binary predictions?
461	What is the difference between estimation and prediction?
462	How to generate correlated random numbers (given means, variances and degree of correlation)?
463	Does it ever make sense to treat categorical data as continuous?
464	Why is tanh almost always better than sigmoid as an activation function?
465	Which permutation test implementation in R to use instead of t-tests (paired and non-paired)?
466	Binary classification with strongly unbalanced classes
467	A generalization of the Law of Iterated Expectations
468	Period detection of a generic time series
469	What does the inverse of covariance matrix say about data? (Intuitively)
470	Advanced statistics books recommendation
471	What is so cool about de Finettis representation theorem?
472	Why is the regularization term *added* to the cost function (instead of multiplied etc.)?
473	Most famous statisticians
474	A chart of daily cases of COVID-19 in a Russian region looks suspiciously level to me - is this so from the statistics viewpoint?
475	Why is the validation accuracy fluctuating?
476	How do you calculate the probability density function of the maximum of a sample of IID uniform random variables?
477	How can I change the title of a legend in ggplot2?
478	Data normalization and standardization in neural networks
479	How does one interpret SVM feature weights?
480	What is the relationship between a chi squared test and test of equal proportions?
481	Why doesnt Random Forest handle missing values in predictors?
482	Does 10 heads in a row increase the chance of the next toss being a tail?
483	Difference between Random Forest and Extremely Randomized Trees
484	Is adjusting p-values in a multiple regression for multiple comparisons a good idea?
485	Is every covariance matrix positive definite?
486	Measuring entropy/ information/ patterns of a 2d binary matrix
487	Logistic regression in R resulted in perfect separation (Hauck-Donner phenomenon). Now what?
488	Optimal number of folds in $K$-fold cross-validation: is leave-one-out CV always the best choice?
489	How to derive variance-covariance matrix of coefficients in linear regression
490	Is it meaningful to calculate Pearson or Spearman correlation between two Boolean vectors?
491	How to calculate pseudo-$R^2$ from Rs logistic regression?
492	Is it important to scale data before clustering?
493	Comparing SVM and logistic regression
494	Are mean normalization and feature scaling needed for k-means clustering?
495	Why is expectation the same as the arithmetic mean?
496	Best practice when analysing pre-post treatment-control designs
497	What are the differences between epoch, batch, and minibatch?
498	Clustering with K-Means and EM: how are they related?
499	What is the variance of the weighted mixture of two gaussians?
500	What are the shortcomings of the Mean Absolute Percentage Error (MAPE)?
501	Are there cases where PCA is more suitable than t-SNE?
502	How do I test that two continuous variables are independent?
503	Choosing between LM and GLM for a log-transformed response variable
504	What are disadvantages of state-space models and Kalman Filter for time-series modelling?
505	Intuitive explanation of the bias-variance tradeoff?
506	Why does shrinkage work?
507	Examples where method of moments can beat maximum likelihood in small samples?
508	Are all values within a 95% confidence interval equally likely?
509	Industry vs Kaggle challenges. Is collecting more observations and having access to more variables more important than fancy modelling?
510	Correlations between continuous and categorical (nominal) variables
511	Manually Calculating P value from t-value in t-test
512	Which activation function for output layer?
513	Is chi-squared always a one-sided test?
514	Which loss function is correct for logistic regression?
515	What does standard deviation tell us in non-normal distribution
516	How should one interpret the comparison of means from different sample sizes?
517	Adam optimizer with exponential decay
518	Neural networks vs support vector machines: are the second definitely superior?
519	Recurrent vs Recursive Neural Networks: Which is better for NLP?
520	Linear model with log-transformed response vs. generalized linear model with log link
521	Box-Cox like transformation for independent variables?
522	Bootstrap vs. jackknife
523	Confidence interval for Bernoulli sampling
524	Introduction to statistics for mathematicians
525	Alternatives to logistic regression in R
526	What is the intuition behind conditional Gaussian distributions?
527	Resources for learning Markov chain and hidden Markov models
528	How exactly does a random effects model in econometrics relate to mixed models outside of econometrics?
529	Is ridge regression useless in high dimensions ($n \ll p$)? How can OLS fail to overfit?
530	Interview question: If correlation doesnt imply causation, how do you detect causation?
531	Why continue to teach and use hypothesis testing (when confidence intervals are available)?
532	What is the difference between N and N-1 in calculating population variance?
533	What does having constant variance in a linear regression model mean?
534	Testing equality of coefficients from two different regressions
535	Does the optimal number of trees in a random forest depend on the number of predictors?
536	How to decide on the correct number of clusters?
537	Difference between kernel and filter in CNN
538	R libraries for deep learning
539	How to interpret type I, type II, and type III ANOVA and MANOVA?
540	How can a distribution have infinite mean and variance?
541	What is the difference between a particle filter (sequential Monte Carlo) and a Kalman filter?
542	How to apply standardization/normalization to train- and testset if prediction is the goal?
543	What is the difference Cross-entropy and KL divergence?
544	Are residuals predicted minus actual or actual minus predicted
545	What is the objective function of PCA?
546	Is it wrong to rephrase 1 in 80 deaths is caused by a car accident as 1 in 80 people die as a result of a car accident?
547	Reference book for linear algebra applied to statistics?
548	How do R and Python complement each other in data science?
549	Statistics and causal inference?
550	What are the breakthroughs in Statistics of the past 15 years?
551	Are we exaggerating importance of model assumption and evaluation in an era when analyses are often carried out by laymen
552	ANOVA assumption normality/normal distribution of residuals
553	Mean absolute deviation vs. standard deviation
554	Warning in R - Chi-squared approximation may be incorrect
555	Standard error for the mean of a sample of binomial random variables
556	Regression when the OLS residuals are not normally distributed
557	How to determine best cutoff point and its confidence interval using ROC curve in R?
558	What is the difference between GARCH and ARMA?
559	Is random forest a boosting algorithm?
560	Using deep learning for time series prediction
561	How are regression, the t-test, and the ANOVA all versions of the general linear model?
562	What are alternatives of Gradient Descent?
563	Best PCA algorithm for huge number of features (>10K)?
564	Book for reading before Elements of Statistical Learning?
565	Why do Convolutional Neural Networks not use a Support Vector Machine to classify?
566	When combining p-values, why not just averaging?
567	What is the advantages of Wasserstein metric compared to Kullback-Leibler divergence?
568	Is sampling relevant in the time of big data?
569	Mathematical Statistics Videos
570	How do we decide when a small sample is statistically significant or not?
571	What are some examples of anachronistic practices in statistics?
572	Backpropagation with Softmax / Cross Entropy
573	Normalization vs. scaling
574	Effect of switching response and explanatory variable in simple linear regression
575	Graph for relationship between two ordinal variables
576	Training a decision tree against unbalanced data
577	A/B tests: z-test vs t-test vs chi square vs fisher exact test
578	What is a difference between random effects-, fixed effects- and marginal model?
579	Random forest computing time in R
580	Why sigmoid function instead of anything else?
581	Multivariate linear regression vs neural network?
582	Standard deviation of standard deviation
583	Practical hyperparameter optimization: Random vs. grid search
584	Is the COVID-19 pandemic curve a Gaussian curve?
585	Why on average does each bootstrap sample contain roughly two thirds of observations?
586	Can a random forest be used for feature selection in multiple linear regression?
587	How to tell the probability of failure if there were no failures?
588	Modern successor to Exploratory Data Analysis by Tukey?
589	Who are frequentists?
590	Do we have a problem of pity upvotes?
591	How to derive the ridge regression solution?
592	How large should the batch size be for stochastic gradient descent?
593	What is the difference between NaN and NA?
594	What is maxout in neural network?
595	How to identify a bimodal distribution?
596	Correct spelling (capitalization, italicization, hyphenation) of p-value?
597	Apply word embeddings to entire document, to get a feature vector
598	Pandas / Statsmodel / Scikit-learn
599	Prediction interval for lmer() mixed effects model in R
600	Recommended books on experiment design?
601	Should I normalize word2vecs word vectors before using them?
602	What is a good algorithm for estimating the median of a huge read-once data set?
603	What should I do when my neural network doesnt generalize well?
604	Is it possible to do time-series clustering based on curve shape?
605	Why do we use Kullback-Leibler divergence rather than cross entropy in the t-SNE objective function?
606	Data APIs/feeds available as packages in R
607	Intuitive explanations of differences between Gradient Boosting Trees (GBM) & Adaboost
608	Can someone explain the concept of exchangeability?
609	Is it true that the percentile bootstrap should never be used?
610	Machine Learning using Python
611	Why do we care so much about normally distributed error terms (and homoskedasticity) in linear regression when we dont have to?
612	Why are MA(q) time series models called moving averages?
613	Visually interesting statistics concepts that are easy to explain
614	Most confusing statistical terms
615	R - QQPlot: how to see whether data are normally distributed
616	Is it a good practice to always scale/normalize data for machine learning?
617	How to visualize a fitted multiple regression model?
618	Interpretation of log transformed predictor and/or response
619	Replicating Statas robust option in R
620	Obtaining predicted values (Y=1 or 0) from a logistic regression model fit
621	Why is the sum of two random variables a convolution?
622	F1/Dice-Score vs IoU
623	Multinomial logistic regression vs one-vs-rest binary logistic regression
624	Why downsample?
625	Software for drawing bayesian networks (graphical models)
626	Statistical inference when the sample is the population
627	Class imbalance in Supervised Machine Learning
628	What book is recommendable to start learning statistics using R at the same time?
629	Is there any gold standard for modeling irregularly spaced time series?
630	Interpreting QQplot - Is there any rule of thumb to decide for non-normality?
631	What are the main theorems in Machine (Deep) Learning?
632	Where does the misconception that Y must be normally distributed come from?
633	Intuition behind why Steins paradox only applies in dimensions $\ge 3$
634	Why is a Bayesian not allowed to look at the residuals?
635	Excel as a statistics workbench
636	Are all models useless? Is any exact model possible -- or useful?
637	How to perform a test using R to see if data follows normal distribution
638	How to read Cooks distance plots?
639	Is there a test to determine whether GLM overdispersion is significant?
640	What is the difference between a Normal and a Gaussian Distribution
641	Linear kernel and non-linear kernel for support vector machine?
642	Is there any difference between lm and glm for the gaussian family of glm?
643	Cross-Entropy or Log Likelihood in Output layer
644	Wont highly-correlated variables in random forest distort accuracy and feature-selection?
645	Does anyone know any good open source software for visualizing data from database?
646	Cost function of neural network is non-convex?
647	Regression for an outcome (ratio or fraction) between 0 and 1
648	How are propensity scores different from adding covariates in a regression, and when are they preferred to the latter?
649	How to select a clustering method? How to validate a cluster solution (to warrant the method choice)?
650	Why does the correlation coefficient between X and X-Y random variables tend to be 0.7
651	Why do statisticians say a non-significant result means you cant reject the null as opposed to accepting the null hypothesis?
652	Fast linear regression robust to outliers
653	Consider the sum of $n$ uniform distributions on $[0,1]$, or $Z_n$. Why does the cusp in the PDF of $Z_n$ disappear for $n \geq 3$?
654	Famous easy to understand examples of a confounding variable invalidating a study
655	How are we defining reproducible research?
656	What is a good resource on table design?
657	Cumming (2008) claims that distribution of p-values obtained in replications depends only on the original p-value. How can it be true?
658	Relationship between $R^2$ and correlation coefficient
659	Logistic Regression: Scikit Learn vs Statsmodels
660	Using lmer for repeated-measures linear mixed-effect model
661	What is Deviance? (specifically in CART/rpart)
662	If the t-test and the ANOVA for two groups are equivalent, why arent their assumptions equivalent?
663	Neural Network: For Binary Classification use 1 or 2 output neurons?
664	Cross Entropy vs. Sparse Cross Entropy: When to use one over the other
665	How to simulate artificial data for logistic regression?
666	Regularization methods for logistic regression
667	What is the difference between the forward-backward and Viterbi algorithms?
668	Percentage of overlapping regions of two normal distributions
669	How to do logistic regression subset selection?
670	How do I find peaks in a dataset?
671	How does LSTM prevent the vanishing gradient problem?
672	What algorithm is used in linear regression?
673	Understanding almost all local minimum have very similar function value to the global optimum
674	Why do my p-values differ between logistic regression output, chi-squared test, and the confidence interval for the OR?
675	Understanding Naive Bayes
676	What is your favorite data visualization blog?
677	Statistical tests when sample size is 1
678	Why is statistically significant not enough?
679	Why does frequentist hypothesis testing become biased towards rejecting the null hypothesis with sufficiently large samples?
680	A smaller dataset is better: Is this statement false in statistics? How to refute it properly?
681	Different ways to write interaction terms in lm?
682	Find expected value using CDF
683	What is the proper usage of scale_pos_weight in xgboost for imbalanced datasets?
684	Choosing the right linkage method for hierarchical clustering
685	Is a sample covariance matrix always symmetric and positive definite?
686	Difference between GradientDescentOptimizer and AdamOptimizer (TensorFlow)?
687	CNN architectures for regression?
688	Rule of thumb for number of bootstrap samples
689	Logistic Regression - Error Term and its Distribution
690	What is perplexity?
691	Normality of dependent variable = normality of residuals?
692	Is minimizing squared error equivalent to minimizing absolute error? Why squared error is more popular than the latter?
693	Survival Analysis tools in Python
694	Random forest assumptions
695	Which has the heavier tail, lognormal or gamma?
696	Are splines overfitting the data?
697	Motivation for Kolmogorov distance between distributions
698	How to determine whether or not the y-axis of a graph should start at zero?
699	Is Amazons average rating misleading?
700	Clarification on interpreting confidence intervals?
701	Does correlation = 0.2 mean that there is an association in only 1 in 5 people?
702	Eliciting priors from experts
703	AIC,BIC,CIC,DIC,EIC,FIC,GIC,HIC,IIC --- Can I use them interchangeably?
704	Logistic Regression in R (Odds Ratio)
705	Logistic regression model does not converge
706	How do I avoid overlapping labels in an R plot?
707	What is difference-in-differences?
708	Why would R return NA as a lm() coefficient?
709	Derive Variance of regression coefficient in simple linear regression
710	Why is median age a better statistic than mean age?
711	Clustering a long list of strings (words) into similarity groups
712	Suppression effect in regression: definition and visual explanation/depiction
713	How to interpret error measures?
714	What is the definition of a feature map (aka activation map) in a convolutional neural network?
715	Dynamic Time Warping Clustering
716	Regression: Transforming Variables
717	How does the Adam method of stochastic gradient descent work?
718	When conducting a t-test why would one prefer to assume (or test for) equal variances rather than always use a Welch approximation of the df?
719	How does centering the data get rid of the intercept in regression and PCA?
720	Can machine learning decode the SHA256 hashes?
721	How are kernels applied to feature maps to produce other feature maps?
722	What is the distribution of the Euclidean distance between two normally distributed random variables?
723	Do we have to tune the number of trees in a random forest?
724	Kullback–Leibler vs Kolmogorov-Smirnov distance
725	Empirical justification for the one standard error rule when using cross-validation
726	What can we say about population mean from a sample size of 1?
727	How can I calculate $\int^{\infty}_{-\infty}\Phi\left(\frac{w-a}{b}\right)\phi(w)\,\mathrm dw$
728	Is it possible to interpret the bootstrap from a Bayesian perspective?
729	Pitfalls in time series analysis
730	Where to start with statistics for an experienced developer
731	Can simple linear regression be done without using plots and linear algebra?
732	First R packages source code to study in preparation for writing own package
733	What is residual standard error?
734	What do endogeneity and exogeneity mean substantively?
735	How to interpret Mean Decrease in Accuracy and Mean Decrease GINI in Random Forest models
736	Why do we use ReLU in neural networks and how do we use it?
737	Logistic regression: anova chi-square test vs. significance of coefficients (anova() vs summary() in R)
738	Rank in R - descending order
739	How do I test a nonlinear association?
740	Online vs offline learning?
741	Expected number of ratio of girls vs boys birth
742	Best method for short time-series
743	How to interpret coefficients from a polynomial model fit?
744	What is the distribution of the sum of non i.i.d. gaussian variates?
745	What is the difference between prediction and inference?
746	Why zero correlation does not necessarily imply independence
747	Does the sign of scores or of loadings in PCA or FA have a meaning? May I reverse the sign?
748	How does rectilinear activation function solve the vanishing gradient problem in neural networks?
749	PCA and the train/test split
750	Bootstrap vs. permutation hypothesis testing
751	Features for time series classification
752	What is the difference between posterior and posterior predictive distribution?
753	Why is polynomial regression considered a special case of multiple linear regression?
754	Generic sum of Gamma random variables
755	Optimized implementations of the Random Forest algorithm
756	What are the cons of Bayesian analysis?
757	Is it unusual for the MEAN to outperform ARIMA?
758	Where does $\sqrt{n}$ come from in central limit theorem (CLT)?
759	How does saddlepoint approximation work?
760	Bayesian statistics tutorial
761	Why would someone use a Bayesian approach with a noninformative improper prior instead of the classical approach?
762	Choosing variables to include in a multiple linear regression model
763	Interpretation of Rs output for binomial regression
764	What references should be cited to support using 30 as a large enough sample size?
765	Using R online - without installing it
766	Difference between forecast and prediction?
767	SVM, Overfitting, curse of dimensionality
768	How to make a time series stationary?
769	Why does correlation matrix need to be positive semi-definite and what does it mean to be or not to be positive semi-definite?
770	How does centering make a difference in PCA (for SVD and eigen decomposition)?
771	Prediction in Cox regression
772	Importance of local response normalization in CNN
773	Alternatives to one-way ANOVA for heteroskedastic data
774	Understanding LSTM units vs. cells
775	Neural Networks: weight change momentum and weight decay
776	Probability distribution for different probabilities
777	Are there any good movies involving mathematics or probability?
778	Bayesian equivalent of two sample t-test?
779	Empirical relationship between mean, median and mode
780	Statistical models cheat sheet
781	Confidence interval around binomial estimate of 0 or 1
782	Taking the expectation of Taylor series (especially the remainder)
783	Does the reciprocal of a probability represent anything?
784	Why do people use p-values instead of computing probability of the model given data?
785	Are CDFs more fundamental than PDFs?
786	What is the root cause of the class imbalance problem?
787	How well can multiple regression really control for covariates?
788	Understanding regressions - the role of the model
789	How to interpret and report eta squared / partial eta squared in statistically significant and non-significant analyses?
790	What are the values p, d, q, in ARIMA?
791	Negative values for AIC in General Mixed Model
792	How to interpret mean of Silhouette plot?
793	What is quasi-binomial distribution (in the context of GLM)?
794	Would PCA work for boolean (binary) data types?
795	Logistic regression vs. LDA as two-class classifiers
796	Danger of setting all initial weights to zero in Backpropagation
797	Why is there a difference between manually calculating a logistic regression 95% confidence interval, and using the confint() function in R?
798	Poisson regression to estimate relative risk for binary outcomes
799	How to do community detection in a weighted social network/graph?
800	How is softmax_cross_entropy_with_logits different from softmax_cross_entropy_with_logits_v2?
801	Is regression with L1 regularization the same as Lasso, and with L2 regularization the same as ridge regression? And how to write Lasso?
802	Approximate order statistics for normal random variables
803	Why is softmax output not a good uncertainty measure for Deep Learning models?
804	When is a biased estimator preferable to unbiased one?
805	Deriving Bellmans Equation in Reinforcement Learning
806	What exactly is Big Data?
807	Rigorous definition of an outlier?
808	Variational inference versus MCMC: when to choose one over the other?
809	Why dont linear regression assumptions matter in machine learning?
810	Computing Cohens Kappa variance (and standard errors)
811	Why is multiple comparison a problem?
812	How to plot trends properly
813	Compendium of cross-validation techniques
814	How seriously should I think about the different philosophies of statistics?
815	Debunking wrong CLT statement
816	Reviewing statistics in papers
817	How to interpret F- and p-value in ANOVA?
818	How to interpret the output of the summary method for an lm object in R?
819	Using LASSO from lars (or glmnet) package in R for variable selection
820	Lift measure in data mining
821	How to assess the similarity of two histograms?
822	PP-plots vs. QQ-plots
823	Measures of variable importance in random forests
824	How can I test if given samples are taken from a Poisson distribution?
825	Is it valid to include a baseline measure as control variable when testing the effect of an independent variable on change scores?
826	What are the differences between hidden Markov models and neural networks?
827	Tiny (real) datasets for giving examples in class?
828	Bayesian vs frequentist Interpretations of Probability
829	Intuitive difference between hidden Markov models and conditional random fields
830	Why does inversion of a covariance matrix yield partial correlations between random variables?
831	What is the difference between Metropolis-Hastings, Gibbs, Importance, and Rejection sampling?
832	What is the difference between a loss function and an error function?
833	Is machine learning less useful for understanding causality, thus less interesting for social science?
834	OpenBugs vs. JAGS
835	When to use simulations?
836	Would a Bayesian admit that there is one fixed parameter value?
837	Intuitive explanation for density of transformed variable?
838	What is your favorite statistical graph?
839	Statistics published in academic papers
840	Why does increasing the sample size lower the (sampling) variance?
841	What is the reason why we use natural logarithm (ln) rather than log to base 10 in specifying function in econometrics?
842	Mean absolute percentage error (MAPE) in Scikit-learn
843	How to interpret p-value of Kolmogorov-Smirnov test (python)?
844	Negative values for AICc (corrected Akaike Information Criterion)
845	what does the numbers in the classification report of sklearn mean?
846	Softmax layer in a neural network
847	What is the significance of logistic regression coefficients?
848	What is the adjusted R-squared formula in lm in R and how should it be interpreted?
849	Should covariates that are not statistically significant be kept in when creating a model?
850	What is meant by weak learner?
851	Explanation of min_child_weight in xgboost algorithm
852	When will L1 regularization work better than L2 and vice versa?
853	Why does Andrew Ng prefer to use SVD and not EIG of covariance matrix to do PCA?
854	LDA vs word2vec
855	What is the difference between conditional and unconditional quantile regression?
856	PCA and Correspondence analysis in their relation to Biplot
857	Who invented stochastic gradient descent?
858	Were generative adversarial networks introduced by Jürgen Schmidhuber?
859	What is the purpose of characteristic functions?
860	Why are regression problems called regression problems?
861	Why do we only see $L_1$ and $L_2$ regularization but not other norms?
862	Neural network references (textbooks, online courses) for beginners
863	When teaching statistics, use normal or Gaussian?
864	Fake uniform random numbers: More evenly distributed than true uniform data
865	How do I get people to take better care of data?
866	What is the difference between a population and a sample?
867	Random number-Set.seed(N) in R
868	AIC guidelines in model selection
869	Interpreting the residuals vs. fitted values plot for verifying the assumptions of a linear model
870	Comparing two models using anova() function in R
871	Difference between naive Bayes & multinomial naive Bayes
872	How to calculate relative error when the true value is zero?
873	How to interpret glmnet?
874	How to quasi match two vectors of strings (in R)?
875	R - Confused on Residual Terminology
876	Multiple regression or partial correlation coefficient? And relations between the two
877	Determining sample size necessary for bootstrap method / Proposed Method
878	How to choose between ROC AUC and F1 score?
879	When and how to use standardized explanatory variables in linear regression
880	When should I balance classes in a training data set?
881	Relative variable importance for Boosting
882	Are pooling layers added before or after dropout layers?
883	Hierarchical clustering with mixed type data - what distance/similarity to use?
884	What are best practices in identifying interaction effects?
885	Confidence interval for median
886	How trustworthy are the confidence intervals for lmer objects through effects package?
887	Why do I get a 100% accuracy decision tree?
888	Understanding the parameters inside the Negative Binomial Distribution
889	Gamma vs. lognormal distributions
890	Time series clustering in R
891	Are your chances of dying in a plane crash reduced if you fly direct?
892	How often do you have to roll a 6-sided die to obtain every number at least once?
893	Does the beta distribution have a conjugate prior?
894	whether to rescale indicator / binary / dummy predictors for LASSO
895	Differences between Bhattacharyya distance and KL divergence
896	How to efficiently generate random positive-semidefinite correlation matrices?
897	Correlation does not imply causation; but what about when one of the variables is time?
898	The Monty Hall Problem - where does our intuition fail us?
899	How do DAGs help to reduce bias in causal inference?
900	How to calculate a confidence level for a Poisson distribution?
901	How to interpret OOB and confusion matrix for random forest?
902	Statistical test to tell whether two samples are pulled from the same population?
903	Improve classification with many categorical variables
904	How to sample from a normal distribution with known mean and variance using a conventional programming language?
905	How can I test whether a random effect is significant?
906	Test for bimodal distribution
907	Dice-coefficient loss function vs cross-entropy
908	How do you use the test dataset after cross-validation?
909	What is the difference between finite and infinite variance
910	How to present results of a Lasso using glmnet?
911	K-fold vs. Monte Carlo cross-validation
912	What is the difference between coefficient of determination and mean squared error?
913	How are Random Forests not sensitive to outliers?
914	how to weight KLD loss vs reconstruction loss in variational auto-encoder
915	Gradient Boosting for Linear Regression - why does it not work?
916	What does the term saturating nonlinearities mean?
917	What is model identifiability?
918	Manually calculated $R^2$ doesnt match up with randomForest() $R^2$ for testing new data
919	What are posterior predictive checks and what makes them useful?
920	Approximate $e$ using Monte Carlo Simulation
921	Why is 600 out of 1000 more convincing than 6 out of 10?
922	References for survival analysis
923	Interpretation of p-value in hypothesis testing
924	How to determine significant principal components using bootstrapping or Monte Carlo approach?
925	Are there any good popular science book about statistics or machine learning?
926	Is LSTM (Long Short-Term Memory) dead?
927	Does statistical independence mean lack of causation?
928	Good games for learning statistical thinking?
929	Evidence for man-made global warming hits gold standard: how did they do this?
930	What is the relationship between the mean squared error and the residual sum of squares function?
931	How to perform two-sample t-tests in R by inputting sample statistics rather than the raw data?
932	Mixed Effects Model with Nesting
933	How does linear regression use the normal distribution?
934	Variance of product of dependent variables
935	What exactly is a Bayesian model?
936	Area under Precision-Recall Curve (AUC of PR-curve) and Average Precision (AP)
937	Detecting Outliers in Time Series (LS/AO/TC) using tsoutliers package in R. How to represent outliers in equation format?
938	How do I fit a constrained regression in R so that coefficients total = 1?
939	What exactly is the alpha in the Dirichlet distribution?
940	Purpose of the link function in generalized linear model
941	What is the meaning of a confidence interval taken from bootstrapped resamples?
942	Why do naive Bayesian classifiers perform so well?
943	How to find a good fit for semi-sinusoidal model in R?
944	Ridge, lasso and elastic net
945	How do you do bootstrapping with time series data?
946	How to test hypothesis of no group differences?
947	Why do we need multivariate regression (as opposed to a bunch of univariate regressions)?
948	Simulation of logistic regression power analysis - designed experiments
949	Was mathematics invented or discovered?
950	Is guns dont kill people, people kill people a good argument?
951	Why dont fair coin tosses add up? Or... is gamblers fallacy really valid?
952	Am I morally obligated to pursue a career in medicine?
953	What logical fallacy is If you dont like it, move!?
954	How does one know one is not dreaming?
955	What would it take in a book to convince a rational person that it had been written by or directly inspired by a god?
956	Could cogito ergo sum possibly be false?
957	Is Kurt Gödels Incompleteness Theorem a cheap trick?
958	Is it immoral to download music illegally?
959	Can you prove anything in philosophy?
960	How can an uneducated but rational person differentiate between science and religion?
961	Logical fallacy: X is bad, Y is worse, thus X is not bad
962	Why is there something instead of nothing?
963	Why is faith seen as a sign of weakness, instead of an unexplored land/opportunity?
964	Does human life have innate value over that of other animals?
965	Is the omniscient-omnipotent-omnipresent definition of God consistent?
966	In which way does quantum mechanics disprove determinism?
967	How will learning about philosophy impact real-life?
968	What is the difference between metaphysics and ontology?
969	Why is a lion not evil?
970	Why does the universe obey scientific laws?
971	Why arent creationism and natural science on the same intellectual level?
972	Why do they say I am committing a fallacy when I am just insulting someone?
973	How can one not believe in god as the root cause of the universe?
974	Why is Ayn Rands Objectivism philosophy dismissed by academics?
975	Does Pascals Wager contain any logical flaws or fallacies?
976	What is the moral difference between abortion and infanticide?
977	Is there an alternative to the scientific method?
978	What are the major branches of philosophy?
979	Why do I accept some inconsequential claims as obviously true without evidence? E.g. Most people dont like to be hit on the head with a hammer.
980	Is Mathematics always correct?
981	What are the ethical problems with flipping a coin to decide in the trolley problem?
982	Do numbers exist independently from observers?
983	Did Russell understand Gödels incompleteness theorems?
984	Is there a term for the belief that if its legal, its moral?
985	What basis do we have for certainty in current scientific theories?
986	Does a negative claimant have a burden of proof?
987	What fallacy in Pascals Wager allows replacing God with the devil?
988	What is the difference between free-will and randomness and or non-determinism?
989	How to get started with philosophy without getting overwhelmed quickly?
990	What did David Hume mean when he said that reason is a slave to the passions?
991	What are the ethics of having children today?
992	Fallacy by Sherlock Holmes Eliminate the impossible, and what remains must be the truth
993	What should philosophers know about math and natural sciences?
994	Is circular reasoning always a fallacy?
995	Is faith necessary for man to survive / why is existentialism valued if it is unsubstantiated?
996	How can one rebut the argument that atheism is inherently immoral?
997	What are the necessary conditions for an action to be regarded as a free choice?
998	Does happiness motivate every action?
999	How come nihilism is so popular today?
1000	Should I respect other peoples religions?
1001	Is it a fallacy, and if so which, to believe we are special because our existence on Earth seems improbable?
1002	Why do atheist euthanasia proponents consider nothingness preferable to suffering?
1003	Is it a fallacy if someone claims they need an explanation for every word of your argument to the point where they dont understand common terms?
1004	Why doesnt philosophy have higher standards for its arguments?
1005	Asserting that Atheism and Theism are both faith based positions
1006	Fundamental idea on proving Gods existence with science
1007	Why has the philosophy of Bishop Berkeley fallen out of favor in academic philosophy?
1008	How can one differentiate nonexistent entities?
1009	What should a rational person accept as a miracle?
1010	Was Socrates a fictional character invented by Plato?
1011	What would Kant do when two categorical imperatives conflict? Could he ever justify lying?
1012	What is the difference (if any) between not true and false?
1013	If I said I had $100 when asked, but I actually had $200, would I be lying by omission?
1014	Why are believers criticized so much for being anti-science when so many scientists are ... believers?
1015	Why is scientism philosophically wrong?
1016	Why do some people care so much about empirical truth?
1017	Why is the complex number an integral part of physical reality?
1018	Three statements that contradict each other
1019	What is the purpose of the universe?
1020	Where and how can I get started in contemporary philosophy?
1021	In what sense is atheism scientific?
1022	How did first-order logic come to be the dominant formal logic?
1023	Is there anything that is totally random?
1024	What are some good introductions to philosophy?
1025	Is atheism just another form of dogma?
1026	How does mathematics work?
1027	How is Gödels incompleteness theorem interpreted in intuitionistic logic?
1028	Does humanisms rejection of God necesitate relativism?
1029	What are the philosophical implications of Gödels First Incompleteness Theorem?
1030	To what extent do we choose our beliefs?
1031	Is First Order Logic (FOL) the only fundamental logic?
1032	Are Methodological Assumptions of StackExchange Fundamentally Flawed?
1033	What is the difference between Fact and Truth?
1034	Do fundamental concepts in physics have any logical basis?
1035	Why should I read about philosophy?
1036	What does it mean for a book or a theorist to be post-modernist as opposed to modernist?
1037	Are we living in a simulation? The evidence
1038	Since words are defined in terms of other words in dictionaries, leading to infinite loops, does it mean natural languages are meaningless?
1039	Does the no true Scotsman fallacy apply to anti Stalinist etc. communism?
1040	Is I cannot imagine a mechanism for X to happen, so X can never happen a named logical fallacy?
1041	What are/were the main criticisms of logical positivism?
1042	Was Robin Hoods point of view ethically sound?
1043	When is absence of evidence not evidence of absence?
1044	Is it possible for something to have no cause?
1045	Why does Dawkins think it is wrong to posit that a paragon of 100% morals could theoretically exist?
1046	Where is the weakness in the ontological proof for Gods existence?
1047	Being alive today: the most improbable coincidence?
1048	If the Bible contains circular reasoning, does it discredit it?
1049	Does hypocrisy invalidate an argument?
1050	Isnt the notion that everything will occur in an infinite timeline an example of the gamblers fallacy?
1051	Im being drafted to the military but I have the option to refuse (legally), would it be immoral for me to serve?
1052	What arguments would support a secular pro-life position?
1053	What are the major research programmes in contemporary logic?
1054	What are some arguments against violence?
1055	Isnt the existence of Hell inherently evil, and isnt God therefore evil in allowing Hell to exist?
1056	How can one argue against income inequality while defending achievement and expertise inequality - beyond invoking Rawls difference principle?
1057	Can time exist without change?
1058	Does the lack of randomness imply the lack of free will?
1059	Have professional philosophers contributed to other fields in the last 20 years?
1060	Why is Aristotles objection not considered a resolution to Zenos paradox?
1061	In what way(s) does popular New Atheism fail to be philosophical?
1062	Is the claim this coin is fair falsifiable?
1063	What are some works that apply an axiomatic method to something other than mathematics?
1064	What is the difference between a statement and a proposition?
1065	Is infinite regress of causation possible? Is infinite regress of causation necessary?
1066	What is modal logic for?
1067	What are the philosophical implications of category theory?
1068	Is mathematics founded on beliefs and assumptions?
1069	What is Philosophy?
1070	Are people capable of generating a random number?
1071	Whats so fallacious about the Slippery Slope Fallacy?
1072	Are there any philosophical arguments to disprove or weaken solipsism?
1073	Why do color TVs make black and white snow?
1074	Why do glass windows still exist? (Why havent they been replaced by plastics?)
1075	Why is kVA not the same as kW?
1076	Why do cars have mirrors for rear view rather than cameras?
1077	Are toasters really electrified inside of the slots?
1078	How was Volkswagen able to trick the lab pollution test?
1079	My customer wants to use my products to do something unsafe. What is my ethical obligation?
1080	Is it possible for a bicycle chainwheel to have a fractional number of teeth?
1081	Transmitting power over long distances what is better AC or DC?
1082	What is the purpose of these diversions in a natural gas line?
1083	Is it possible to build a perfectly spherical Prince Ruperts drop?
1084	What is the purpose of these “partially filled in” locomotive wheels?
1085	How fast does solid waste fall in vertical drain pipes?
1086	Why dig out and then fill in before building a large structure?
1087	Is it possible to pump a powder?
1088	What are the pros and cons of a traffic circle versus a traffic light intersection?
1089	Why are railroad tank cars bent in the middle?
1090	Is it possible to build an air compressor with no moving parts?
1091	How to quantify martial arts strikes?
1092	Why do hydraulic systems use special fluid - whats wrong with water?
1093	Which is Worse: Car vs. Car or Car vs. Wall?
1094	How can a piece of paper be shaped to guarantee it falls slower than a plain sheet of paper?
1095	Calculating pitch, yaw, and roll from mag, acc, and gyro data
1096	Why are engine blocks so robust apart from containing high pressure?
1097	How are increasingly accurate machines made?
1098	From an engineering point of view what are the downsides of a too accurate model?
1099	Why would you launch a large ship by dropping it sideways?
1100	Understanding required torque for a motor lifting a weight
1101	Why use steam instead of just hot air?
1102	Why are rear wheels not placed at the extreme rear of a bus?
1103	Why doesnt a lightning strike destroy the lightning rod?
1104	Why dont hydroelectric plants use cascades of turbines instead of single turbines?
1105	What is the purpose of these steps in rivers?
1106	Why exactly does a washer help distribute the stress around a bolt?
1107	Why do car wheels have holes?
1108	What is a reason that handlebars fit to a motorcycle and steering wheel fit to a car?
1109	How to know whether the flow is supersonic in a nozzle?
1110	Why not put servers in a refrigerator?
1111	How do engineers really use numerical simulation?
1112	How much can Protactinium degrade the efficiency of the Thorium fuel cycle?
1113	How does width and thickness affect the stiffness of steel plate?
1114	Would it make sense to have a 12V lighting circuit in a house?
1115	How to make smoke for a small wind tunnel?
1116	Why does it take so long to restart a nuclear power plant?
1117	Why would a train automatically derail if a signal is passed at danger?
1118	Why did steam locomotives not transfer power by cogwheels?
1119	What makes suspension bridges unsuitable for railways?
1120	Why do cars turn by turning the front wheel?
1121	Does a roadway bridge experience more load when vehicles are parked or when they are moving?
1122	How does turning off electric appliances save energy
1123	Why are earthfills fully covered in concrete where they join bridges?
1124	Why does the Channel Tunnel enter the ground around 10 km from the coast?
1125	Sizing a pressure safety valve for two-phase flow
1126	Whats wrong with transporting a refrigerator on its side?
1127	How to stop water flow in a siphon?
1128	Windmills in empty fields. Why no trees?
1129	What is the purpose of building foundations?
1130	Why are truss bridges the way they are?
1131	How does a traffic light sense the proximity of vehicles?
1132	What are the engineering principles for a train to get electricity from the railway
1133	Is it structurally sound to cut an I beam to a T on one end?
1134	What are the major differences between Engineering degrees and Engineering Technology degrees in terms of employability?
1135	Pound-force (lbf) vs Pound-mass (lbm)
1136	Effective ways to drive a single shaft with multiple motors?
1137	What material is used to hold molten iron in a furnace?
1138	What is the most efficient means of warming a building with a high ceiling?
1139	Why does the microwave plate start in a random direction?
1140	Why do oil tankers heat crude oil?
1141	Why dont refrigerators have parts outdoors?
1142	How does measurement uncertainty combine with tolerances?
1143	How many train passes can railway tracks endure?
1144	How can I measure correctly with a ruler?
1145	Why doesnt epoxy stick to silicone?
1146	How are passive houses made in very hot regions (like Saudi Arabia)?
1147	How to design a house to be cooled passively?
1148	Fracture patterns in tempered glass
1149	Meshing of complex geometrical domains
1150	How can a storm drop 40 inches (1 metre) of rain?
1151	Impossible or improbable? Hurricane crossing the equator
1152	What place on Earth is closest to the Sun?
1153	Are there any saltwater rivers on Earth?
1154	Why does lightning strike from the ground-up?
1155	How many trees would I have to plant to solve Global Warming?
1156	How much oil is created each year?
1157	What started the US Dust Bowl of the 1930s, and could it happen again?
1158	Why is the pond in my backyard not frozen when it is -15 °C (5 °F) outside?
1159	How do greenhouse gases let heat in, but not let it out?
1160	Why do snowflakes form into hexagonal structures?
1161	Are Richter-magnitude 10 earthquakes possible?
1162	(How long) would Earths atmosphere last without a global magnetic field?
1163	Farthest point from the center of the Earth
1164	Are there any uncharted waters left on earth?
1165	How is the mass of the Earth determined?
1166	How its possible to measure temperature 2000 years ago with such precision?
1167	What would be the temperature of earth if there was no atmosphere?
1168	CO₂ level is high enough that it reduces cognitive ability. Isnt that a reason to worry?
1169	What does a mm of rain mean?
1170	Why do the Siberian methane craters have smooth vertical walls?
1171	How high must one be for the curvature of the earth to be visible to the eye?
1172	Why is Earths inner core solid?
1173	Is climate change a vicious circle?
1174	Is the sea level rise unusual?
1175	Does gravity increase the closer to the core you get?
1176	How do we know the asteroids formed at the same time as earth?
1177	Similarities between grand circulation solvers and mantle convection solvers
1178	Why is Earths age given by dating meteorites rather than its own rocks?
1179	How can we determine the size and composition of Earths inner core?
1180	Is there any river that does not discharge into larger body of water?
1181	How does anthropogenic heating affect global warming?
1182	How would plate tectonics differ if Earth had no water?
1183	Why do felsic materials have lower melting points than mafic?
1184	How and why did the oceans form on Earth but not on other planets?
1185	Is it true that earthquakes are not felt in a cave?
1186	Why does Coriolis determine the rotation direction of a cyclone but not my drain?
1187	What factors determine the number of Hadley cells for a planet?
1188	How much of the current global warming is due to human influence?
1189	Why is Earths outer-core liquid?
1190	Why does the salt in the oceans not sink to the bottom?
1191	At what humidity does it start to rain?
1192	Is it possible for rivers to freeze completely and stop flowing?
1193	Where on Earth is the magnetic field intensity stronger?
1194	Global warming - why doesn´t mankind collect heat (thermal energy) and turn it into electricity or send it to space?
1195	How would an icicle grow upwards?
1196	Is this XKCD comic an accurate timeline of the earths average temperature?
1197	How do weather models work?
1198	Is earthquake prediction possible?
1199	What is the status of the Raymo & Ruddiman idea that Tibet cooled the Earth?
1200	What are deconvolutional layers?
1201	How to set class weights for imbalanced classes in Keras?
1202	Micro Average vs Macro average Performance in a Multiclass classification setting
1203	Whats the difference between fit and fit_transform in scikit-learn models?
1204	Publicly Available Datasets
1205	K-Means clustering for mixed numeric and categorical data
1206	What is the dying ReLU problem in neural networks?
1207	Difference between isna() and isnull() in pandas
1208	How to draw Deep learning network architecture diagrams?
1209	When to use One Hot Encoding vs LabelEncoder vs DictVectorizor?
1210	When to use GRU over LSTM?
1211	Best python library for neural networks
1212	The cross-entropy error function in neural networks
1213	Train/Test/Validation Set Splitting in Sklearn
1214	How do you visualize neural network architectures?
1215	Python vs R for machine learning
1216	Why do people prefer Pandas to SQL?
1217	How to get correlation between two categorical variable and a categorical variable and continuous variable?
1218	SVM using scikit learn runs endlessly and never completes execution
1219	Choosing a learning rate
1220	Training an RNN with examples of different lengths in Keras
1221	Why do cost functions use the square error?
1222	When should I use Gini Impurity as opposed to Information Gain (Entropy)?
1223	Backprop Through Max-Pooling Layers?
1224	How big is big data?
1225	Advantages of AUC vs standard accuracy
1226	Time series prediction using ARIMA vs LSTM
1227	ValueError: Input contains NaN, infinity or a value too large for dtype(float32)
1228	How are 1x1 convolutions the same as a fully connected layer?
1229	strings as features in decision tree/random forest
1230	When to use (He or Glorot) normal initialization over uniform init? And what are its effects with Batch Normalization?
1231	Data scientist vs machine learning engineer
1232	Open source Anomaly Detection in Python
1233	In supervised learning, why is it bad to have correlated features?
1234	Convert a list of lists into a Pandas Dataframe
1235	Are Support Vector Machines still considered state of the art in their niche?
1236	What is dimensionality reduction? What is the difference between feature selection and extraction?
1237	What is the positional encoding in the transformer model?
1238	When is a Model Underfitted?
1239	Cosine similarity versus dot product as distance metrics
1240	What is the difference between equivariant to translation and invariant to translation
1241	Cross-entropy loss explanation
1242	GBM vs XGBOOST? Key differences?
1243	Clustering geo location coordinates (lat,long pairs)
1244	Adding Features To Time Series Model LSTM
1245	Tools and protocol for reproducible data science using Python
1246	RNN vs CNN at a high level
1247	Machine learning - features engineering from date/time data
1248	Why mini batch size is better than one single batch with all training data?
1249	Latent Dirichlet Allocation vs Hierarchical Dirichlet Process
1250	Neural networks: which cost function to use?
1251	Why do internet companies prefer Java/Python for data scientist job?
1252	How to clone Python working environment on another machine?
1253	What is the difference between Gradient Descent and Stochastic Gradient Descent?
1254	Does batch_size in Keras have any effects in results quality?
1255	How to fight underfitting in a deep neural net
1256	Is there any domain where Bayesian Networks outperform neural networks?
1257	IDE alternatives for R programming (RStudio, IntelliJ IDEA, Eclipse, Visual Studio)
1258	Number of parameters in an LSTM model
1259	What is the difference between LeakyReLU and PReLU?
1260	Why Is Overfitting Bad in Machine Learning?
1261	Should I go for a balanced dataset or a representative dataset?
1262	How to set batch_size, steps_per epoch, and validation steps?
1263	Should a model be re-trained if new observations are available?
1264	Does scikit-learn have a forward selection/stepwise regression algorithm?
1265	How to deal with version control of large amounts of (binary) data
1266	Is the R language suitable for Big Data
1267	What is the Q function and what is the V function in reinforcement learning?
1268	Sparse_categorical_crossentropy vs categorical_crossentropy (keras, accuracy)
1269	What is the use of torch.no_grad in pytorch?
1270	Why should the data be shuffled for machine learning tasks
1271	How to get accuracy, F1, precision and recall, for a keras model?
1272	In softmax classifier, why use exp function to do normalization?
1273	How to interpret the output of XGBoost importance?
1274	How do subsequent convolution layers work?
1275	Understanding predict_proba from MultiOutputClassifier
1276	Data Science in C (or C++)
1277	How much of data wrangling is a data scientists job?
1278	Deep Learning vs gradient boosting: When to use what?
1279	How do I compare columns in different data frames?
1280	Opening a 20GB file for analysis with pandas
1281	How to force weights to be non-negative in Linear regression
1282	How can I transform names in a confidential data set to make it anonymous, but preserve some of the characteristics of the names?
1283	train_test_split() error: Found input variables with inconsistent numbers of samples
1284	What is experience replay and what are its benefits?
1285	How to prepare/augment images for neural network?
1286	What is Ground Truth
1287	Merging two different models in Keras
1288	Why not always use the ADAM optimization technique?
1289	Multi GPU in Keras
1290	Can machine learning algorithms predict sports scores or plays?
1291	Does XGBoost handle multicollinearity by itself?
1292	Do data scientists use Excel?
1293	Data science related funny quotes
1294	What is the difference between model hyperparameters and model parameters?
1295	Choosing between CPU and GPU for training a neural network
1296	Encoding features like month and hour as categorial or numeric?
1297	Why are Machine Learning models called black boxes?
1298	LightGBM vs XGBoost
1299	The difference between `Dense` and `TimeDistributedDense` of `Keras`
1300	What is the advantage of keeping batch size a power of 2?
1301	When to use what - Machine Learning
1302	Intuitive explanation of Noise Contrastive Estimation (NCE) loss?
1303	What loss function to use for imbalanced classes (using PyTorch)?
1304	Calculation and Visualization of Correlation Matrix with Pandas
1305	Calculating KL Divergence in Python
1306	How does Keras calculate accuracy?
1307	Are there free cloud services to train machine learning models?
1308	Does gradient descent always converge to an optimum?
1309	What is the difference between bootstrapping and cross-validation?
1310	Why is ReLU used as an activation function?
1311	Do I need to learn Hadoop to be a Data Scientist?
1312	Is it always better to use the whole dataset to train the final model?
1313	What are some standard ways of computing the distance between documents?
1314	StandardScaler before and after splitting data
1315	Difference between OrdinalEncoder and LabelEncoder
1316	What do you think of Data Science certifications?
1317	How to set the number of neurons and layers in neural networks
1318	When is precision more important over recall?
1319	Applications and differences for Jaccard similarity and Cosine Similarity
1320	What are the advantages of HDF compared to alternative formats?
1321	What would I prefer - an over-fitted model or a less accurate model?
1322	Organized processes to clean data
1323	How does the validation_split parameter of Keras fit function work?
1324	When to use Random Forest over SVM and vice versa?
1325	Why do we need XGBoost and Random Forest?
1326	How to do SVD and PCA with big data?
1327	Best practices to store Python machine learning models
1328	Quick guide into training highly imbalanced data sets
1329	Paper: Whats the difference between Layer Normalization, Recurrent Batch Normalization (2016), and Batch Normalized RNN (2015)?
1330	Do Random Forest overfit?
1331	Is it necessary to standardize your data before clustering?
1332	How to calculate mAP for detection task for the PASCAL VOC Challenge?
1333	Sentence similarity prediction
1334	What is the best Keras model for multi-class classification?
1335	Unbalanced multiclass data with XGBoost
1336	What is the meaning of The number of units in the LSTM cell?
1337	Why is xgboost so much faster than sklearn GradientBoostingClassifier?
1338	Meaning of latent features?
1339	Early stopping on validation loss or on accuracy?
1340	What is a good way to transform Cyclic Ordinal attributes?
1341	What are the use cases for Apache Spark vs Hadoop
1342	How to use the output of GridSearch?
1343	Hypertuning XGBoost parameters
1344	Should we apply normalization to test data as well?
1345	Guidelines for selecting an optimizer for training neural networks
1346	RNNs with multiple features
1347	Why use both validation set and test set?
1348	Neural Network parse string data?
1349	How to decide neural network architecture?
1350	Are there any tools for feature engineering?
1351	Gini coefficient vs Gini impurity - decision trees
1352	Using TensorFlow with Intel GPU
1353	What to set in steps_per_epoch in Keras fit_generator?
1354	Are there any rules for choosing the size of a mini-batch?
1355	What does Logits in machine learning mean?
1356	Why is gold golden?
1357	Why can we smell copper?
1358	Can an atom have more than 8 valence electrons? If not, why is 8 the limit?
1359	Why doesnt water burn?
1360	Is a negative pH level physically possible?
1361	Why is absolute zero unattainable?
1362	Is there a general consensus on the causes of the alpha-effect?
1363	How do you melt metals with super high melting points?
1364	Is it actually possible to dispose of a body with hydrofluoric acid?
1365	Is toothpaste solid or liquid?
1366	What is Bents rule?
1367	Why is the 2s orbital lower in energy than the 2p orbital when the electrons in 2s are usually farther from the nucleus?
1368	Does water really go bad after a couple of days?
1369	If nothing sticks to Teflon, how does Teflon stick to frying pans?
1370	Is it true that heavy water is not blue?
1371	Do all salts taste salty?
1372	Bonding in diatomic C2, a carbon-carbon quadruple bond?
1373	What causes the old book smell?
1374	Why would breathing pure oxygen be a bad idea?
1375	How do people know HCN smells like almonds?
1376	Ortho-effect in substituted aromatic acids and bases
1377	Could a magnet pull oxygen out of the air?
1378	How do organic chemistry mechanisms become accepted?
1379	Why do elements in columns 6 and 11 assume abnormal electron configurations?
1380	Why is it wrong to use the concept of hybridization for transition metal complexes?
1381	How does Walter White make pure crystal meth using a non-stereospecific reaction?
1382	Why does F replace the axial bond in PCl5?
1383	Why does pasta really boil over?
1384	How can one explain niobium’s weird electronic configuration?
1385	Why does shaking a match put the fire out?
1386	Why doesnt H₄O²⁺ exist?
1387	Is iron in the brown ring compound in a +1 oxidation state?
1388	Why add water first then acid?
1389	Why is FORTRAN so commonly used in computational chemistry?
1390	Striking examples where Kohn-Sham orbitals clearly have no physical meaning
1391	How do I figure out the hybridization of a particular atom in a molecule?
1392	Are diamonds really forever?
1393	Why do we write NH3?
1394	The last elements atomic number
1395	Positive or Negative Anode/Cathode in Electrolytic/Galvanic Cell
1396	Why do compounds like SF6 and SF4 exist but SH6 and SH4 dont?
1397	What makes banana bonds possible in diborane?
1398	Why do shampoo ingredient labels feature the term Aqua?
1399	What makes some metals melt at higher temperature?
1400	What is the pH of ice?
1401	Is carbon dioxide organic or inorganic?
1402	Why dont we explode after drinking water?
1403	Regioselectivity of acid-catalyzed ring-opening of epoxides
1404	How can I update a map/mesh and coordinates in a PyMol session file?
1405	Why is it important to use a salt bridge in a voltaic cell? Can a wire be used?
1406	Why does menthol (e.g. peppermint) feel cool to the tongue?
1407	Why isnt aluminium involved in biological processes?
1408	How does chloroform degrade nitrile gloves?
1409	Why does ice water get colder when salt is added?
1410	Why is an S-S bond stronger than an O-O bond?
1411	Unit of the equilibrium constant: contradiction of Bridgmans theorem?
1412	How can antibonding orbitals be more antibonding than bonding orbitals are bonding?
1413	Why doesnt frozen sugar solution taste sweet?
1414	What happens to a radioactive carbon dioxide molecule when its carbon-14 atom decays?
1415	Why does bond angle decrease in the order H2O, H2S, H2Se?
1416	Does oil break down condoms?
1417	Why does wood burn but not sugar?
1418	Why do the names of most chemical elements end with -um or -ium?
1419	Is there any substance thats a 4-4-4 on the NFPA diamond?
1420	Mechanism of arene side chain oxidation by permanganate
1421	Why is the recipe of Coca Cola still a secret?
1422	Why does nitration of N,N-dimethylaniline occur at the meta position?
1423	Fundamental forces behind covalent bonding
1424	Is buckminsterfullerene aromatic?
1425	What volume does one mole of an ideal gas occupy?
1426	Why does sulfur, but not oxygen, catenate?
1427	What is the reason for the exceptional stability of the cyclopropylmethyl carbocation?
1428	What is resonance, and are resonance structures real?
1429	Whats the biggest organic molecule that could have a smell?
1430	Why can we still breathe in valleys?
1431	Are the lone pairs in water equivalent?
1432	Difference between thermodynamic and kinetic stability
1433	How can carbon dioxide be converted into carbon and oxygen?
1434	Inductive effect of hydrogen isotopes
1435	Why does CaCO3 react with HCl, but not with H2SO4?
1436	Carbon atoms at the edge of a diamond
1437	Differences between phenols and alcohols
1438	How can I predict if a reaction will occur between any two (or more) substances?
1439	Is it safe to drink reboiled water?
1440	Does heavy water taste sweet?
1441	What is more acidic: D3O+ in D2O or H3O+ in H2O and why?
1442	Can an atom bond with more than 8 other atoms?
1443	The reason behind the steep rise in pH in the acid base titration curve
1444	Why does whipped cream use nitrous oxide instead of nitrogen gas?
1445	Why is methanes molecular formula conventionally CH₄, while water is H₂O (among others)?
1446	Why is the vanadium(3+) ion paramagnetic?
1447	Why do SN1 and SN2 reactions not occur at sp2 centres?
1448	Why can a diamond be broken using a hammer if its the hardest natural substance known?
1449	Why does cyclopropane react with bromine?
1450	Why do impurities lower the melting point of an isolated substance?
1451	What causes the rotting fish smell?
1452	Do molecules with bridges through rings exist?
1453	Do symmetric hydrogen bonds in neutral molecules exist?
1454	What is the inert pair effect?
1455	How to derive these general formulae for number of stereoisomers of a compound with a possible plane of symmetry?
1456	Is there ANY chemical that can destroy PTFE, or Teflon?
1457	How can the dipole moment of carbon monoxide be rationalised by molecular orbital theory?
1458	Can 100% covalent bonds exist?
1459	Which exotic salt can lower waters freezing point by 70 °C?
1460	How does ammonium nitrate explode on its own?
1461	Why is arsenous acid denoted H3AsO3?
1462	Why is fresh ice sticky?
1463	Five-pointed crown alkane C25H40: does it exist?
1464	Is Hexafluorocyclohexane the Most Polar Small Molecule?
1465	Why do we use helium in balloons?
1466	Choosing the right condenser
1467	Why is the bond angle H-P-H smaller than H-N-H?
1468	Why is BCl3 a monomer whereas AlCl3 exists as a dimer?
1469	What exactly is happening when sodium, potassium, or other alkali metal explodes in water?
1470	Relativistic effect: d-electrons in metallorganic complexes
1471	Why does carbon monoxide have a greater affinity for hemoglobin than oxygen?
1472	What is a non-classical carbocation?
1473	What is the difference between ∆G and ∆G°?
1474	Why super glue does not stick inside their own bottle?
1475	What do the prefixes meta, ortho, pyro mean in inorganic chemistry?
1476	Why is pyrimidine less basic than pyridine?
1477	Why does potassium react more violently with water than lithium?
1478	Generating neat orbitals/surfaces from molden/wfn-files
1479	How do I visualize an atom?
1480	DFT Functional Selection Criteria
1481	Difference between shells, subshells and orbitals
1482	Why does alcoholic KOH prefer elimination whereas aqueous KOH prefers substitution?
1483	Why do atoms generally become smaller as one moves left to right across a period?
1484	What is known about liquid carbon?
1485	Gibbs free energy-minimum or zero?
1486	Is methanol more acidic than water?
1487	IUPAC nomenclature: Smallest sum of locants?
1488	Why is chemistry unpredictable?
1489	A compound that absorbs all visible light
1490	Natural Bond Orbital analysis: Significance of stabilization energy determined by 2nd order perturbation
1491	Does any known substance ignite on cooling?
1492	IUPAC nomenclature for an interesting looking organic compound
1493	What are the maximum number of electrons in each shell?
1494	Chemistry behind Gales coffee maker in Breaking Bad
1495	A glass of water with ice-cubes in it. Wheres the water the coldest; at the top or bottom?
1496	What exactly is hydrogen bonding (and does it really need fluorine, oxygen, or nitrogen)?
1497	Splitting of multiplets in ¹H NMR spectra?
1498	What is actually the difference between valence bond theory and molecular orbital theory?
1499	Why isnt ethane used for cooking?
1500	Why are there two Hydrogen atoms on some periodic tables?
1501	Can hot food ever emit x-rays or gamma rays?
1502	What would follow in the series sigma, pi and delta bonds?
1503	Are metallic/ionic bonds weaker than covalent bonds?
1504	Why is gold unreactive when only one electron is in the outer shell?
1505	Is pyrene aromatic despite failing Hückels rule?
1506	Is density functional theory an ab initio method?
1507	Does O2 have a color in the gas phase
1508	Has anyone even taken a picture of a molecule to confirm the geometry predicted by theory?
1509	Why isnt chemically-strengthened glass made with potassium carbonate to begin with?
1510	May I treat units (e.g. joules, grams, etc.) in equations as variables?
1511	Stereoselectivity of dihydroxylation with osmium tetroxide
1512	Why is the letter J omitted in the spdf... sequence?
1513	Hypervalency and the octet rule
1514	Pauli exclusion principle and resonance
1515	Proper typography of NOx
1516	Synthesis Golf II: Erythronolide B
1517	Single-molecule magnet with electrically-controlled permeability: How does the Titan Shield from Deus Ex work?
1518	How do I extract cyanide from apple seeds?
1519	Tetrahedral or Square Planar
1520	Why is [PdCl4]2- square planar whereas [NiCl4]2- is tetrahedral?
1521	Acidity of substituted phenols
1522	Why cant Pd/C and H2 reduce both the alkene and carbonyl portions of α,β-unsaturated carbonyls?
1523	Why is the bond length of CO+ less than that of CO?
1524	Why do chemistry and physics have different sign convention in thermodynamics?
1525	Why dont the electrons move through the electrolyte (instead of the circuit) in a galvanic cell?
1526	Why is methanol toxic?
1527	Effect of drinking ultra-pure water
1528	Would it be possible to destroy gold?
1529	Middle row anomaly of the periodic table
1530	When is it true that more nodes equals higher energy?
1531	Soaps come in different colors, but why is soap lather always white?
1532	How much CO2 could you remove from the atmosphere with 2 trillion USD?
1533	Why are isotopes of hydrogen the only ones with special names?
1534	Is there an energy cost associated with flipping the spin of an electron?
1535	Synthesis Golf I: Sodium Fluvastatin
1536	Flammability (NFPA) - how is it defined?
1537	What would be the effect of the addition of an inert gas to a reaction at equilibrium?
1538	Whats the difference between a nucleophile and a base?
1539	Why does basicity of group 15 hydrides decrease down the group?
1540	Is the ammonium substituent (-NH3+) really meta-directing in electrophilic substitution?
1541	Where did amino acids get their one-letter codes?
1542	Realistic chemical spill accident in high school chemistry class
1543	What caused the flashes in the video footage of Chernobyl?
1544	How are poisons discovered? Does someone have to die/be poisoned from it first?
1545	Why does hyperconjugation help for ring cleavage?
1546	What do the different grades of chemicals mean?
1547	What are the meanings of dotted and wavy lines in structural formulas?
1548	Why does pyrite form cubic crystals?
1549	Why does burnt hair smell bad?
1550	What roles do neutrons play in an atom?
1551	Why does the unstabilised Wittig reaction selectively form cis alkenes?
1552	Relative stability of cis and trans cycloalkenes
1553	Are there non-transparent gases?
1554	What is the molecular structure of xenon hexafluoride?
1555	What makes ice slippery?
1556	What makes Gorilla Glass more durable with each generation?
1557	Why do transition elements make colored compounds?
1558	Difference between exothermic and exergonic
1559	What is the unit of pH?
1560	Why does the 3rd electron shell start filling up with scandium?
1561	What is the strongest acid?
1562	Why are there only 7 types of unit cells and 14 types of Bravais lattices?
1563	Melting and boiling point trend in Group II
1564	Why is -ethane in methane?
1565	What is the exchange interaction?
1566	Are graphite and hexagonal boron nitride aromatic
1567	Why dont gases escape Earths atmosphere?
1568	How to properly store acids at home?
1569	Is honey really a supersaturated solution? Does heating to un-crystalize redissolve it or melt it?
1570	d-orbital splittings in WS2 monolayer
1571	Imaginary Bonding Interactions
1572	What are angular and radial nodes?
1573	Is alcohol really a solution?
1574	Why are covalent bonds directional?
1575	What metals arent dissolved in/attacked by aqua regia?
1576	What is the pKa of the hydronium, or oxonium, ion (H3O+)?
1577	Carbon with 5 bonds?
1578	Microwaving a glass of water, what happens?
1579	Which is the densest gas known?
1580	Electrical conductivity of graphite
1581	Why are DCM and chloroform so resistant towards nucleophilic substitution?
1582	What substances do humans consume that are caloric but neither protein, carb, nor fat?
1583	Why does chocolate melt so easily?
1584	Is activated carbon classified as organic or inorganic?
1585	Why is the Vitamin B complex, a complex?
1586	Is stainless a bulk or a surface property of stainless steel?
1587	How do orbitals coexist with a nucleus?
1588	Is there radioactivity at absolute zero?
1589	How heavy should an element be, to be a Heavy Metal?
1590	How to name binary (inorganic) compounds given their chemical formula, and vice-versa?
1591	Why is −78 °C a magic temperature for organic reactions?
1592	Why is 1-ethylidene-4-methylcyclohexane chiral?
1593	How do non-polar substances dissolve in non-polar solvents?
1594	How do you separate enantiomers?
1595	Acid Accident Treatment
1596	Why are solids and liquids not included in the equilibrium constant? What about in a reaction rate calculation?
1597	Why do atoms want to have a full outer shell?
1598	What happens to gunpowder when it gets wet?
1599	Which carbocation is more stable, the ethyl- or 1-propyl-carbocation?
1600	Why is water the universal solvent?
1601	Why are noble gases stable
1602	Why isnt the American nickel magnetic?
1603	What are oxidation states used for?
1604	Can magnetic fields affect a chemical reaction?
1605	When a candle burns, why does the top of wick glow if bottom of flame is hottest?
1606	What properties of carbon dioxide make it a greenhouse gas?
1607	Why is cyclooctateraene shaped like a tub rather than a chair?
1608	What happens if you cool water in a container too small for it to freeze?
1609	Why is fluorine a gas, but lithium isnt?
1610	Do electrons have some volume, area or shape?
1611	Are the bonding orbitals in methane equivalent - photoelectron spectrum
1612	Why are there no cheap diamond equivalents?
1613	Why is heroin a more potent drug than morphine, despite having a similar structure?
1614	Unusual Friedel–Crafts alkylation with pivaloyl chloride
1615	Suggest methods and basis sets for a variety of systems
1616	How many molecules does it take to have a phase?
1617	Why is snow white?
1618	How do Quantum Software Packages Work?
1619	Whats a minimal yet chemically-meaningful kinetic system for an oscillating reaction?
1620	What makes a radical free?
1621	How does Palladium dissociate H₂ so easily?
1622	What is the difference between D and L configuration, and + and −?
1623	How much gold is there in our sun?
1624	How loud would the Sun be?
1625	Does the Sun rotate?
1626	How can there be 1,000 stellar ancestors before our Sun?
1627	Why is the discovery of merging neutron stars important?
1628	Why dont astronomers use meters to measure astronomical distances?
1629	Could the dinosaurs have seen the asteroid that killed them?
1630	Is the moon only 60 pixels?
1631	Why is only one side of the Moon visible from Earth?
1632	How does the Earth move in the sky as seen from the Moon?
1633	Why not take a picture of a closer black hole?
1634	Can gravitational waves pass through a black hole?
1635	Is it dark inside the Sun?
1636	Does the Milky Way move through space?
1637	Why is there a zig-zag in elemental abundances?
1638	If a massive object like Jupiter flew past the Earth how close would it need to come to pull people off of the surface?
1639	How many planets are there in this solar system?
1640	When will the Sun end all human life on Earth?
1641	Why is the asteroid belt shaped like a triangle?
1642	Would we have more than 8 minutes of light, if the Sun went out?
1643	If two black hole event horizons overlap (touch) can they ever separate again?
1644	Why hasnt the 9th Planet been detected already?
1645	What is the hottest thing in the universe?
1646	Where did TRAPPIST-1a go?
1647	If light has no mass, why is it affected by gravity?
1648	Why does Io cast a hard shadow on Jupiter, but the Moon casts a soft shadow on Earth?
1649	Why is moon light not the same color as sunlight?
1650	What would happen if an ice cube is left in space?
1651	Sun constantly converts mass into energy, will this cause its gravity to decrease?
1652	Is there any role today that would justify building a large single dish radio telescope to replace Arecibo?
1653	How powerful a telescope would allow me to view the astronauts aboard ISS do a space-walk?
1654	Is there a star over my head?
1655	Why has Venuss atmosphere not been stripped away by solar wind?
1656	How did Astronomers deduce that the Sun was not a ball of fire?
1657	Why does it take so long to transmit an image from New Horizons to Earth?
1658	Two species of dark matter?
1659	Does the Milky Way orbit around anything?
1660	If Earth is tilted, why is Polaris always above the same spot?
1661	Is it possible to achieve a stable lunarstationary orbit around the moon?
1662	Why is Mars cold?
1663	How can HD 140283 be older than the universe?
1664	Does matter accumulate just outside the event horizon of a black hole?
1665	Where does the Solar System end?
1666	What is in the center of the universe?
1667	Does the sun cross other spiral arms in its movement around the galaxys center?
1668	Why do Black Holes in the middle of galaxies not suck up the whole galaxy?
1669	How does neutron star collapse into black hole?
1670	How do we have photos of galaxies so far away?
1671	How old is the oldest light visible from Earth?
1672	Are photons aged?
1673	Why does the Sun have different day lengths, but not the gas giants?
1674	Why does gas form a star instead of a black hole?
1675	Why is Gaia operating around Earth orbit? Why not send it to Neptunes orbit?
1676	Why is our solar system tipped about 63° with respect to the plane of our galaxy?
1677	Are new stars less pure as generations go by?
1678	How are black holes found?
1679	Can the moon appear to be in any position in the sky?
1680	How do scientists know that the distant parts of the universe obey the physical laws exactly as we observe around us?
1681	Do all stars have an Oort cloud or is it a rare occurence?
1682	Why are we building larger land-based telescopes instead of launching larger ones into space?
1683	Is Earths moon the only one where a total eclipse of the sun covers the entire sun?
1684	Why are there uneven bright areas in this photo of black hole?
1685	How do we know that black holes are spinning?
1686	How large can a ball of water be without fusion starting?
1687	Closest star system to Alpha Centauri?
1688	How do we distinguish old craters from new ones on the Moon?
1689	How can comets have tails if theres no air resistance in space?
1690	How do I calculate the inclination of an object with an amateur telescope?
1691	Is it a coincidence that on the far side of the moon almost no seas are visible?
1692	9th planet location?
1693	Why cant we see Saturns phases from earth?
1694	Why does the Moon appear gray when passing between the Sun and the Earth?
1695	Are there any stars that orbit perpendicular to the Milky Ways galactic plane?
1696	Why does Jupiter have so many moons?
1697	Why doesnt the moon twinkle?
1698	Considering our methods of exploration, how likely is it that there are unfound planets (not dwarf planets) in our solar system?
1699	How exactly does Hawking radiation decrease the mass of black holes?
1700	Do moons have moons?
1701	If you lived on the far side of the Moon, how could you infer the existence of Earth?
1702	Whats the fastest moving object in the universe?
1703	Why do the planets in our solar system orbit in the same plane?
1704	Did I see another planet?
1705	Is Venus in some way tidally locked to... Earth?
1706	What did LIGO Actually See? (Gravitational waves discovery)
1707	How was the mass of Venus determined?
1708	Where can I find the positions of the planets, stars, moons, artificial satellites, etc. and visualize them?
1709	Could any known, living organisms on Earth survive on Mars?
1710	Why do (most of) the planets rotate counterclockwise, i.e. the same way the Sun does?
1711	How should I deal with becoming discouraged as a graduate student?
1712	How to ask dumb questions
1713	Upset by male classmates openly comparing female students according to physical appearance
1714	I dont want to kill any more mice, but my advisor insists that I must in order to get my PhD
1715	Should I share my horrible software?
1716	Moral dilemma in unwittingly being paid to complete a students work
1717	How to effectively deal with Imposter Syndrome and feelings of inadequacy: Ive somehow convinced everyone that Im actually good at this
1718	How to avoid procrastination during the research phase of my PhD?
1719	A paper I received to review has (independently) duplicated work that we are writing up. How to proceed in light of peer-review confidentiality?
1720	Why do American colleges and universities have sports teams?
1721	Sex worker student offering her (lawful) services
1722	How to read papers without falling into a rabbit hole?
1723	A published paper stole my unpublished results from a science fair
1724	Failing students when it might cause them economic ruin
1725	Female students coming to office hours in overly revealing clothing
1726	How to avoid being falsely accused of harassment by a student?
1727	Professor creates assignment making students advocate for a bill being presented to Congress. Is this legal?
1728	Have I embarassed my supervisors by solving a problem that a PhD student in my group was working on without success?
1729	I believe I have solved a famous open problem. How do I convince people in the field that I am not a crank?
1730	What to do when your student is convinced that he will be the next Einstein?
1731	University rank/stature - How much does it affect ones career post-Ph.D?
1732	Writing a recommendation letter for a student I reported for academic dishonesty
1733	Why would an academic write a textbook for free?
1734	Postdoc overwhelmed by incomplete work
1735	What to do with a student coming to class in revealing clothing, to the degree that it disrupts the teaching environment?
1736	How can I recover professionally from being a crank?
1737	Can I add a baby as a co-author of a scientific paper, to protest against co-authors who havent made any contribution?
1738	May a man attend a workshop entitled “Young women in [domain]”?
1739	How to deal with an advisor who wants a friendlier relationship with me than I do?
1740	How to stop hopping the learning chain and actually begin somewhere?
1741	How can I convince graduate students in China to not copy/paste from the Internet into their research papers?
1742	How to deal with a student who most likely has a mental condition, and keeps arguing with me in class?
1743	Is it possible to recover after a career setback such as this?
1744	How do you cite a Github repository?
1745	Quoting a typo: Do I really have to do sic, or can I just fix the sentence?
1746	I realize I made a huge mistake in my thesis and am not sure what to do. Im defending very soon (days away). What should I do?
1747	Religious supervisor wants to thank god in the acknowledgements
1748	Is it acceptable to publish student names with the label stupid question, on a publicly-visible website?
1749	Grades are too high for the department - what should I do?
1750	My research paper filed as a patent in China by my Chinese supervisor without me as inventor
1751	Grant fraud, should I bust my PhD advisor?
1752	Why dont researchers publish failed experiments?
1753	What does the typical workflow of a journal look like?
1754	How do you come to terms with the fact that you might never be among the best in your research community?
1755	Do I have the legal right to demand information on plagiarism of my work from another university?
1756	Why are papers without code but with results accepted?
1757	In a formal paper, should I censor brainf**k, the name of a programming language?
1758	How do you judge the quality of a journal?
1759	Why do many talented scientists write horrible software?
1760	Profs neurological health is declining rapidly. What can I (TA) do?
1761	My paper is being cited in vaccine misinformation. What do I do?
1762	How honest should one be with their students when talking about the realities of academia?
1763	What to do about questions that are designed to embarrass the speaker?
1764	I (independently) solved a fellow students research problem. I want to publish it. What should I do?
1765	How to deal with failing a student?
1766	Is Obamas JAMA paper OK?
1767	Why are most scientific articles locked behind a paywall?
1768	What does first authorship really mean?
1769	How can a TA help a student who is certain she sucks at programming?
1770	Our teacher is encouraging us to use cracked software
1771	I am uncomfortable about students taking pictures of the blackboard, because I dont like appearing in them
1772	Appropriateness of dedicating my thesis to a Jewish mathematician who died in a concentration camp
1773	Teaching a class likely meant to inflate the GPA of student athletes
1774	Rediscovery of calculus in 1994: what should have happened to that paper?
1775	A student in my course does well on exams, but doesnt do the homework: Go easy on them, or make them pay the price?
1776	What to do if a referee plagiarises the result after rejecting a paper?
1777	Does one need to be affiliated with a university to publish papers?
1778	Is it appropriate for a professor to require students to sign a non-disclosure agreement before being taught?
1779	How to deal with a very weak student?
1780	Should I intervene when a colleague in a different department makes students run laps as part of their grade?
1781	How does the admissions process work for Ph.D. programs in the US, particularly for weak or borderline students?
1782	Will ISIS attacks hurt my PhD application as a Muslim?
1783	My professor is rigging data and plagiarizing. What can I do?
1784	Is declining an undergraduate award which causes me discomfort appropriate?
1785	Is it ethical to submit a paper with the name of a co-author who cannot be contacted?
1786	How do I handle a colleagues gender change when citing their paper?
1787	Best-practice models for research code?
1788	I slept with my advisors daughter and she is blackmailing me now. What can I do?
1789	Should I simply ignore it if authors assume that Im male in their response to my review of their article?
1790	Whats the point of PhD theses if nobody reads them?
1791	Why do most people think its a bad idea to read from slides?
1792	Why is my mood dictated so much by how well my research is going?
1793	Is there a place in academia for someone who compulsively solves every problem on their own?
1794	How hard do early-career academics in the United States work, really?
1795	Can leaked nude pictures damage ones academic career?
1796	How to build healthy working relationships with my male colleagues as a young-ish, attractive-ish woman?
1797	Useful strategies for answering dumb questions in a talk?
1798	Reporting a student who may be psychologically disturbed
1799	Is it ethical to profit by having my students buy my textbook?
1800	Two years into my PhD program, and Mom is dying of cancer. Should I tell my advisor about it?
1801	What to do about grade grubbers?
1802	I am an editor for a lousy paper and I found a better algorithm than theirs. Must I share it with them?
1803	Should a young professor avoid using dating apps?
1804	How do I identify predatory and low quality journals? With Bealls List gone, how can I tell if a journal is spam?
1805	Is publishing runnable code instead of pseudo code shunned?
1806	Why are professors websites so ugly?
1807	Should professors intervene if a student is wearing offensive clothing in their classroom?
1808	Is it ethical/acceptable to give a lighter penalty to students who admit to cheating?
1809	My students family wont let her study what she wants
1810	Should the slides in a presentation be self-explanatory or be as minimal as possible?
1811	Is it okay to report classmates cheating on exams?
1812	Should I quit my PhD - workload, self-esteem and social life
1813	Should I have doubts if the organizers of a workshop ask me to sign a behavior agreement upfront?
1814	Is ignoring emails acceptable in academia?
1815	How to supervise a bad PhD student
1816	Should I send professors money for illegally downloading their books?
1817	Taking an academic pseudonym?
1818	Slept through final, professor is giving me a zero and failing me – is there anything I can do to change this?
1819	How do you get a bad transcript past Ph.D. admissions?
1820	Knowing that most students submit assignments right around the deadline, is it advisable not to set deadline that is very late at night?
1821	I was caught cheating on an exam, how can I minimize the damage?
1822	How do you answer Oh, youre a professor? What do you teach?
1823	Choice of personal pronoun in single-author papers
1824	Software to draw illustrative figures in papers
1825	In a yes/no question, a student gives the right answer and an unnecessary but wrong explanation. How to grade?
1826	Do academics look down on well-designed academic websites?
1827	Asked again to review a paper, when the authors dont wish to modify it
1828	Fellow student asked question from take-home exam on Stack Exchange
1829	How to react when encountering students who have previously failed my course?
1830	How to deal with anxiety and depression after being kicked out of PhD program?
1831	What should I do after advisor got upset when I expressed belief in evolution and then said he couldnt add me to his research team?
1832	How to argue against questionable research practices such as P-hacking and Harking?
1833	What is this can I hire you as a tutor scam?
1834	Gender transition as a starting faculty member: a terrible idea?
1835	If I request a paper through my university library, must they pay a substantial amount of money?
1836	Is it appropriate to email a professor saying you enjoyed their class, after doing well in it?
1837	Advisor tries to reproduce my results to ensure my honesty. Is it the norm?
1838	What is the purpose of women-only meetings, panels, conferences, etc. in academia?
1839	How to come up with research ideas?
1840	Googling my name reveals silly things from when I was younger. I am embarassed. How will this affect me in my future academic career?
1841	What to remember when supervising female PhD students?
1842	How to stop feeling guilty about unfinished work?
1843	Asking questions in class: how can I exit a Q&A when I havent really understood?
1844	How to deal with arrogant e-mail of a student
1845	Why do researchers sometimes use extremely complicated English sentences to convey their meaning?
1846	Why are research papers written in language thats difficult for undergraduate students?
1847	Do I not have the personality for a PhD?
1848	Editor rejected manuscript claiming it is similar to a not-yet-published manuscript (that I havent seen). How to proceed?
1849	What are fake, shady, and/or predatory journals?
1850	Only one student answered an exam question - and I strongly suspect he cheated
1851	Why do students go for a PhD even when chances of getting academic jobs on its completion are slim?
1852	Is doing two PhDs a good path?
1853	How to silence the voice that tells you youre being financially irresponsible by spending 4 to 6 years doing a PhD?
1854	Why do Americans care so much about recommendation letters?
1855	What is the point of listing 1000 authors for a single scientific paper?
1856	How to approach a student with bad hygiene?
1857	Dressing down to impress in academic settings
1858	Why is plagiarism so harshly punished?
1859	What makes someone deserving of a Ph.D.?
1860	Student caught cheating when leaving class after handing me the exam
1861	What is the best last slide in a thesis presentation?
1862	How can I prevent students from writing answers on an assignment, then claiming I didnt see their answer?
1863	Is it okay for a professor to leave the classroom only 5 min past the class start if nobody has shown up?
1864	Is it reasonable for a professor to ask students to stay 30-45 minutes past scheduled class time every week?
1865	PhD Student : Publish Paper with Wife?
1866	Is Academia really just a huge competition?
1867	What can I do when some people stole my master thesis work and published it as their own work?
1868	What should I do if my advisor is forcing me to vote on a specific candidate in IEEE elections?
1869	None of 25 students at question session before exam has a question. What should lecturer do?
1870	Why is it acceptable that publishers sell papers they didn’t pay for?
1871	How to respond to a company that wants specific details on implementation of my PhD research?
1872	Should I recommend a student with a bad ideology?
1873	How to prevent students from using modified calculators to cheat on exams?
1874	Is it ethical for a professor to get masters students to work on open source modules related to the professors profit-making company?
1875	My teaching evaluations arrived and female students statistically gave me worse scores than male students. Is there any possible explanation?
1876	How to handle requests for a race-based exam structure?
1877	Ethical concerns regarding the review of a paper on autonomous armed drones
1878	Why do universities fund Ph.D. students in the sciences?
1879	What is a “sandwich thesis”?
1880	What is behind the Indian Undergrad Research Experience-spam?
1881	Submitting paper proving X soon after paper proving X-epsilon
1882	Assistant professor vs Associate professor
1883	What to do if I have seen an exam before I have taken it?
1884	Has anyone, based on great performance, ever been awarded a higher degree than the one they enrolled for?
1885	What to do if most of my students have switched to a better lecturers class?
1886	Professor falsely accusing me of cheating in a class he does not teach, two months after end of the class. What precautions should I take?
1887	Is it unethical to supply a marked solution to a student who has shown intent to cheat, with the intent of identifying them for punishment?
1888	A famous scholar sent me an unpublished draft of hers. Then she died. I think her work should be published. What should I do?
1889	My admission is revoked after accepting the admission offer
1890	Is having access to past exams cheating and, if yes, could it be proven just by a good grade?
1891	Will my cancer ruin my chances of going to graduate school in math?
1892	The overwhelming silence in shy classes
1893	Students bringing babies to class
1894	I lost my students quizzes due to a theft, what should I do?
1895	How can I address a student systematically boosting their grades by filing frivolous complaints?
1896	One of my student researchers is likely falsifying some results/data. What are the consequences?
1897	Professor does not care about cheating, what should TA do?
1898	What happens if a math PhD student fails to find a proof that is the main objective of his/her thesis topic?
1899	During peer-review, should I comment on the authors messy code?
1900	How do I deal with a candidate mentioning God twelve times in their application?
1901	Is it true that PhD students need to work 10-12 hours a day every day to be productive?
1902	Just started a postdoc, but it went REALLY bad, REALLY fast. Stay or go?
1903	I have stack-exchanged through my undergrad math program. Am I likely to succeed in mathematics PhD programs?
1904	E-mail address to use in publications
1905	The GRE: Why does this still exist?
1906	Do authors have to be politically correct in article-writing?
1907	Why do some instructors care so much about attendance?
1908	If I quit my PhD, would it make my advisor look bad?
1909	Im feeling discouraged after getting tenure; should I quit?
1910	What should I do when my accepted paper is subsequently rejected?
1911	Why cant universities work around the proposed reclassification of tuition remission as taxable income, by not charging tuition?
1912	How to be a co-author anonymously?
1913	Is it possible to work full time and complete a PhD?
1914	What to say to a student who has failed?
1915	How to tell an over-confident student they still have a lot to learn?
1916	When should a supervisor be an author?
1917	Are non-citizen Muslim professors and students going to be removed from US universities and subsequently deported by Trumps ban?
1918	Is web-presence important for researchers?
1919	Is there an affordable way for non-students to subscribe to multi-journals/archives?
1920	Should I report a PhD student’s incompetence to their supervisor?
1921	You are paid to answer my questions! - how to handle silly questions?
1922	I want to do research but Im too old for a PHD
1923	Why is peer review so random?
1924	Where do bad papers go to die?
1925	How do I talk about my abusive former advisor if people ask?
1926	Walk up and talk to random people at academic conferences - is that appropriate?
1927	What makes academic failure different from failure in another career?
1928	My supervisor doesnt believe in depression
1929	Techniques for good board handwriting
1930	Should I seek professional help because I have a lot of math books?
1931	Is it ok to upload joke papers to arXiv?
1932	PhD student, issued contract at year 3 which will sign over intellectual property. Is it legal?
1933	Donating money to scientific research after my death
1934	How to handle lecturer who doesnt let me use my phone?
1935	What is the justification for the typical punishment of a student who did not cheat but helped others cheat?
1936	How do mathematicians conduct research?
1937	Is it OK to refuse to cite paywalled papers?
1938	Are college students forbidden from sharing their grades with other students?
1939	How can I avoid being the negative one when giving feedback on statistics?
1940	Editor asks for π to be written in roman
1941	I am non-tenured and have been offered a tenure-track position at my current university, but I dont want to stay here long term. What should I do?
1942	Typical experiences of transgender people in academia?
1943	How to react to a student proselytising during office hours?
1944	How to quiet noisy undergrads students during lecture
1945	Why do professors want to make sure that their notes written on the blackboard will not be published?
1946	Two-thirds of my class colluded. Should I report them to the academic offences committee?
1947	How should I proceed when a (famous) professor says Im not good enough for research?
1948	What can I do if my advisor wants me to keep working, even while Im on medical leave for severe depression?
1949	How to avoid a hostile takeover of first authorship during medical leave?
1950	How to react when a team of colleagues obviously made up some results?
1951	As a department head, what to do if a professor leaves without giving out grades?
1952	How to become well-known in the research community while being a PhD student
1953	Should I report an accepted PhD thesis in which the literature review is copied verbatim from sources?
1954	Am I reading enough of the scientific literature? Should I read for breadth or depth?
1955	Should I explain to the graduate admission committee why I am older than most prospective PhD students?
1956	Strategies for teaching with facial aphasia (inability to recognize faces aka prosopagnosia, face-blindness)
1957	Use of first person in a PhD Thesis
1958	Is 8:00 AM an unreasonable time to meet with my graduate students and post-doc?
1959	A student keeps using a native language while asking questions in the class when the course is taught in English
1960	As a TA, how to react if I come across a Facebook group in which students insult me?
1961	What is the origin of the underwater basket weaving meme in Academia?
1962	Are there good reasons to avoid using color in research papers?
1963	What productive academic work can you do with minimal attention in a small (<30 minutes) block of time?
1964	How should I deal with very negative feedback from some students?
1965	What is the point of a lecture when you have a textbook?
1966	Where did I lose control of my studies?
1967	First year Math PhD student; My problem solving skill has been completely atrophied and continues to decline
1968	Referee says the proof is wrong, but it is not, what to do?
1969	Should I tell students that its my first time teaching the course?
1970	Why are some professors critical of even casual use of Wikipedia?
1971	Counter strategy against group that repeatedly does strategic self-citations and ignores other relevant research
1972	How to train students to write high-quality research papers?
1973	How do I reference the Python programming language in a thesis or a paper?
1974	What are the potential pitfalls of having a PhD?
1975	Accused of cheating due to the time accounted by Blackboard
1976	Is it acceptable for a professor to tell male students to not think that they are smarter than female students?
1977	Citing paywalled articles accessed via illegal web sharing
1978	How do teachers learn to grade?
1979	Should I take threats from a former professor seriously?
1980	Does publishing a paper on arXiv prevent me from submitting it to a non-open access journal?
1981	How to deal with a student who harasses the (inexperienced) teacher during class?
1982	How to respond to unfair to write English comments?
1983	Someone plagiarised my entire paper. What should I do now?
1984	How to help reduce students anxiety in an oral exam?
1985	How to deal with a professor who grades assignments and exams incorrectly
1986	Are results that are derived simply by using more computational power publishable?
1987	What are the advantages or disadvantages of using LaTeX for writing scientific publications
1988	How to let a PhD student know that their research is not as good as they think it is
1989	First author doesnt want a co-author to read the whole paper
1990	Why are many obviously pointless papers published, or worse studied?
1991	Can a lecturer force you to learn a specific programming syntax / language?
1992	Why upload to academic preprint sites like arXiv?
1993	Lecturer ridiculing me in front of class for making a mistake
1994	Is there any problem with students seeing faculty naked in university gym?
1995	Am I being exploited by my supervisor?
1996	What to answer an author asking me if I reviewed his/her paper?
1997	Is it ethical to use proprietary (closed-source) software for scientific computation?
1998	Why does this site give different answers about leaving a bad situation compared to Workplace.SE?
1999	How to deal with an academic stalker?
2000	My first authorship is being turned into co-first authorship, what can I do?
2001	A student forgot to answer an exam question
2002	Can I, as a reviewer, tell authors to get a native English speaker to proofread their paper?
2003	How to deal with people looking at their mobile phone during my presentation?
2004	What is a social strategy I can use to respond to Hows your PhD going?
2005	What good is engineering research with no practical relevance?
2006	PhD candidate vs PhD student
2007	Why do academics frequently write very short email replies?
2008	Is it valid to modify a students exam grade if you feel they did not earn it?
2009	Is it appropriate (as a PhD student) to email other researchers asking about some details in their papers?
2010	Why do researchers need universities?
2011	Is it acceptable for a professor to ask post-doc student to babysit for free?
2012	How can I tell if I have simplified my talk too much?