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% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/postprocessing_reject_option_classification.R
\name{reject_option_classification}
\alias{reject_option_classification}
\title{Reject option classification}
\usage{
reject_option_classification(
unprivileged_groups,
privileged_groups,
low_class_thresh = 0.01,
high_class_thresh = 0.99,
num_class_thresh = as.integer(100),
num_ROC_margin = as.integer(50),
metric_name = "Statistical parity difference",
metric_ub = 0.05,
metric_lb = -0.05
)
}
\arguments{
\item{unprivileged_groups}{A list epresentation for unprivileged group.}
\item{privileged_groups}{A list representation for privileged group.}
\item{low_class_thresh}{Smallest classification threshold to use in the optimization. Should be between 0. and 1.}
\item{high_class_thresh}{Highest classification threshold to use in the optimization. Should be between 0. and 1.}
\item{num_class_thresh}{Number of classification thresholds between low_class_thresh and high_class_thresh for the optimization search. Should be > 0.}
\item{num_ROC_margin}{Number of relevant ROC margins to be used in the optimization search. Should be > 0.}
\item{metric_name}{Name of the metric to use for the optimization. Allowed options are "Statistical parity difference", "Average odds difference", "Equal opportunity difference".}
\item{metric_ub}{Upper bound of constraint on the metric value}
\item{metric_lb}{Lower bound of constraint on the metric value}
}
\description{
Reject option classification is a postprocessing technique that gives
favorable outcomes to unpriviliged groups and unfavorable outcomes to
priviliged groups in a confidence band around the decision boundary with
the highest uncertainty.
}
\examples{
\dontrun{
# Example with Adult Dataset
load_aif360_lib()
ad <- adult_dataset()
p <- list("race",1)
u <- list("race", 0)
col_names <- c(ad$feature_names, "label")
ad_df <- data.frame(ad$features, ad$labels)
colnames(ad_df) <- col_names
lr <- glm(label ~ ., data=ad_df, family=binomial)
ad_prob <- predict(lr, ad_df)
ad_pred <- factor(ifelse(ad_prob> 0.5,1,0))
ad_df_pred <- data.frame(ad_df)
ad_df_pred$label <- as.character(ad_pred)
colnames(ad_df_pred) <- c(ad$feature_names, 'label')
ad_ds <- binary_label_dataset(ad_df, target_column='label', favor_label = 1,
unfavor_label = 0, unprivileged_protected_attribute = 0,
privileged_protected_attribute = 1, protected_attribute='race')
ad_ds_pred <- binary_label_dataset(ad_df_pred, target_column='label', favor_label = 1,
unfavor_label = 0, unprivileged_protected_attribute = 0,
privileged_protected_attribute = 1, protected_attribute='race')
roc <- reject_option_classification(unprivileged_groups = u,
privileged_groups = p,
low_class_thresh = 0.01,
high_class_thresh = 0.99,
num_class_thresh = as.integer(100),
num_ROC_margin = as.integer(50),
metric_name = "Statistical parity difference",
metric_ub = 0.05,
metric_lb = -0.05)
roc <- roc$fit(ad_ds, ad_ds_pred)
ds_transformed_pred <- roc$predict(ad_ds_pred)
}
}
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