import re
import os
import faiss
import whisper
import ffmpeg
import tempfile
import requests
import numpy as np
import pandas as pd
import streamlit as st
from openai import OpenAI
from transformers import pipeline
from sentence_transformers import SentenceTransformer
from newsplease import NewsPlease
from streamlit_echarts import st_echarts
from streamlit_option_menu import option_menu
# NEWS to check
# https://fbe.unimelb.edu.au/newsroom/fake-news-in-the-age-of-covid-19 True Claim
# https://newssalutebenessere.altervista.org/covid-19-just-a-simple-flue-or-something-else/ False Claim
###### CONFIGURATIONS ######
# Debug mode
debug = False
# File paths
embeddings_file = r"data\abstract_embeddings.npy"
pmid_file = r"data\pmids.npy"
faiss_index_file = r"data\faiss_index.index"
file_path = r'data\parte_205.csv'
# Initialize OpenAI API client
client = OpenAI(
base_url="https://integrate.api.nvidia.com/v1",
api_key=st.secrets.nvidia.api_key
)
# Load data
data = pd.read_csv(file_path)
# Load the model
model = SentenceTransformer('all-MiniLM-L6-v2')
def get_article_data(url):
"""
Extracts article data from a specified URL.
Args:
url (str): URL of the article to analyze.
Returns:
dict: Structured article data, including: title, authors, publication date, and content.
"""
try:
# Make an HTTP request to the specified URL
response = requests.get(url)
# Check if the request was successful (i.e., status code 200)
response.raise_for_status()
# Extract the HTML content from the response
html_content = response.text
# Use NewsPlease to extract structured data from the HTML content
article = NewsPlease.from_html(html_content, url=url)
# Return the structured article data
return {
"title": article.title,
"authors": article.authors,
"date_publish": article.date_publish,
"content": article.maintext,
}
except requests.exceptions.RequestException as e:
return {"error": f"Error during URL retrieval: {e}"}
except Exception as e:
return {"error": f"Error processing the article: {e}"}
def extract_and_split_claims(claims):
"""
Extracts and splits claims from a given string.
Args:
claims (str): String containing claims.
Returns:
dict: Dictionary containing the extracted claims.
"""
start_index = claims.find("Claim 1:")
if start_index != -1:
claims = claims[start_index:]
claim_lines = claims.strip().split("\n\n")
claims_dict = {}
for i, claim in enumerate(claim_lines, start=1):
claims_dict[f"Claim_{i}"] = claim
for var_name, claim_text in claims_dict.items():
globals()[var_name] = claim_text
return claims_dict
def extract_label_and_score(result):
"""
Extracts the predicted label and score from the result string.
Args:
result (str): String containing the prediction result.
Returns:
tuple: Predicted label and score.
"""
# Extract the predicted label
label_match = re.search(r"'labels': \['(.*?)'", result)
predicted_label = label_match.group(1) if label_match else None
# Extract the score
score_match = re.search(r"'scores': \[(\d+\.\d+)", result)
score_label = float(score_match.group(1)) if score_match else None
return predicted_label, score_label
def clean_phrases(phrases, pattern):
"""
Clean and extract phrases from a list of strings using a specified pattern.
Args:
phrases (list): List of strings containing phrases.
pattern (str): Regular expression pattern to extract phrases.
Returns:
list: List of cleaned phrases as dictionaries with text and abstract keys
"""
cleaned_phrases = []
for phrase in phrases:
matches = re.findall(pattern, phrase)
cleaned_phrases.extend([{"text": match[0], "abstract": f"abstract_{match[1]}"} for match in matches])
return cleaned_phrases
def highlight_phrases(abstract_text, phrases, color, label):
"""
Highlight phrases in the abstract text with the specified background color.
Args:
abstract_text (str): Text of the abstract to highlight.
phrases (list): List of phrases to highlight.
color (str): Background color to use for highlighting.
label (str): Predicted label for the claim.
Returns:
str: Abstract text with highlighted phrases.
"""
# Switch colors if the label is "False"
if label.lower() == "false":
color = "lightgreen" if color == "red" else color
# Highlight each phrase in the abstract text
for phrase in phrases:
abstract_text = re.sub(
re.escape(phrase["text"]),
f'<span style="background-color: {color}; font-weight: bold; border: 1px solid black; border-radius: 5px;">{phrase["text"]}</span>',
abstract_text,
flags=re.IGNORECASE
)
return abstract_text
def parse_response(response):
"""
Parse the response from the model and extract the fields.
Args:
response (str): Response string from the model.
Returns:
tuple: Extracted fields from the response.
"""
# Initial values for the fields
first_label = "Non trovato"
justification = "Non trovato"
supporting = "Non trovato"
refusing = "Non trovato"
notes = "Non trovato"
# Regular expression patterns for extracting fields
patterns = {
"first_label": r"Label:\s*(.*?)\n",
"justification": r"Justification:\s*(.*?)(?=\nSupporting sentences)",
"supporting": r"Supporting sentences from abstracts:\n(.*?)(?=\nRefusing sentences)",
"refusing": r"Refusing sentences from abstracts:\n(.*?)(?=\nNote:)",
"notes": r"Note:\s*(.*)"
}
# Extract the fields using regular expressions
if match := re.search(patterns["first_label"], response, re.DOTALL):
first_label = match.group(1).strip()
if match := re.search(patterns["justification"], response, re.DOTALL):
justification = match.group(1).strip()
if match := re.search(patterns["supporting"], response, re.DOTALL):
supporting = [{"text": sentence.strip(), "abstract": f"abstract_{i+1}"} for i, sentence in enumerate(match.group(1).strip().split('\n'))]
if match := re.search(patterns["refusing"], response, re.DOTALL):
refusing = [{"text": sentence.strip(), "abstract": f"abstract_{i+1}"} for i, sentence in enumerate(match.group(1).strip().split('\n'))]
if match := re.search(patterns["notes"], response, re.DOTALL):
notes = match.group(1).strip()
# Return the extracted fields
return first_label, justification, supporting, refusing, notes
def load_embeddings(embeddings_file, pmid_file, faiss_index_file, debug=False):
"""
Load embeddings, PMIDs, and FAISS index from the specified files.
Args:
embeddings_file (str): File path for the embeddings.
pmid_file (str): File path for the PMIDs.
faiss_index_file (str): File path for the FAISS index.
Returns:
tuple: Tuple containing the embeddings, PMIDs, and FAISS index.
"""
# Check if the files exist
if not (os.path.exists(embeddings_file) and os.path.exists(pmid_file) and os.path.exists(faiss_index_file)):
raise FileNotFoundError("One or more files not found. Please check the file paths.")
# Load the embeddings and PMIDs
embeddings = np.load(embeddings_file)
pmids = np.load(pmid_file, allow_pickle=True)
# Load the FAISS index
index = faiss.read_index(faiss_index_file)
if debug:
print("Embeddings, PMIDs, and FAISS index loaded successfully.")
return embeddings, pmids, index
def retrieve_top_abstracts(claim, model, index, pmids, data, top_k=5):
"""
Retrieve the top abstracts from the FAISS index for a given claim.
Args:
claim (str): Claim to fact-check.
model (SentenceTransformer): Sentence transformer model for encoding text.
index (faiss.IndexFlatIP): FAISS index for similarity search.
pmids (np.ndarray): Array of PMIDs for the abstracts.
data (pd.DataFrame): DataFrame containing the abstract data.
top_k (int): Number of top abstracts to retrieve.
Returns:
list: List of tuples containing the abstract text, PMID, and distance.
"""
# Encode the claim using the SentenceTransformer model
claim_embedding = model.encode([claim])
faiss.normalize_L2(claim_embedding) # Normalize the claim embedding (with L2 norm)
distances, indices = index.search(claim_embedding, top_k)
# Retrieve the top abstracts based on the indices
results = []
for j, i in enumerate(indices[0]):
pmid = pmids[i]
abstract_text = data[data['PMID'] == pmid]['AbstractText'].values[0]
distance = distances[0][j]
results.append((abstract_text, pmid, distance))
return results
def generate_justification(query, justification):
"""
Generate a justification for the claim using the Zero-Shot Classification model.
Args:
query (str): Claim to fact-check.
justification (str): Justification for the claim.
Returns:
str: Final justification for the claim.
"""
# Define the classes for the Zero-Shot Classification model
Class = ["True", "False","NEI"]
# Generate the justification text
justification_text = (
f'Justification: "{justification}"'
)
# Limit the justification text to a maximum length
max_length = 512
if len(justification_text) > max_length:
justification_text = justification_text[:max_length]
# Generate the final justification using the Zero-Shot Classification model
output = zeroshot_classifier(
query,
Class,
hypothesis_template=f"The claim is '{{}}' for: {justification_text}",
multi_label=False
)
# Prepare the final justification text
final_justification = f'{output}.'
return final_justification
def llm_reasoning_template(query):
"""
Generate a template for the prompt used for justification generation by the LLM model.
Args:
query (str): Claim to fact-check.
Returns:
str: Reasoning template for the claim.
"""
llm_reasoning_prompt = f"""<<SYS>> [INST]
You are a helpful, respectful and honest Doctor. Always answer as helpfully as possible using the context text provided.
Use the information in Context.
Elaborate the Context to generate a new information.
Use only the knowledge in Context to answer.
Answer describing in a scentific way. Be formal during the answer. Use the third person.
Answer without mentioning the Context. Use it but don't refer to it in the text.
To answer, use max 300 word.
Create a Justification from the sentences given.
Use the structure: Justification: The claim is (label) because... (don't use the word "context")
Write as an online doctor to create the Justification.
After, give some sentences from Context from scientific papers: that supports the label and reject the label.
Supporting sentences from abstracts:
information sentence from abstract_1:
information sentence from abstract_2:
..
Refusing sentences from abstracts:
information sentence from abstract_1:
information sentence from abstract_2:
..
Add where it comes from (abstract_1, abstract_2, abstract_3, abstract_4, abstract_5)
With the answer, gives a line like: "Label:". Always put Label as first. After Label, give the Justification.
The justification will be always given as Justification:
Label can be yes, no, NEI, where yes: claim is true. no: claim is false. NEI: not enough information.
The Label will be chosen with a voting system of support/refuse before.
[/INST] <</SYS>>
[INST] Question: {query} [/INST]
[INST] Context from scientific papers:
"""
return llm_reasoning_prompt
def claim_detection_template(full_text):
"""
Generate a template for the prompt used for claim detection by the LLM model.
Args:
full_text (str): Full text to analyze.
Returns:
str: Template for claim detection.
"""
claim_detection_prompt = f"""<<SYS>> [INST]
Your task is to extract from the text potential health related question to verify their veracity.
The context extracted from the online where to take the claim is: {full_text}
Create simple claim of single sentence from the context.
Dont's use *
Give just the claim. Don't write other things.
Extract only health related claim.
Rank eventual claim like:
Claim 1:
Claim 2:
Claim 3:
Use always this structure.
Start every claim with "Claim " followed by the number.
The number of claims may go from 1 to a max of 5.
The claims have to be always health related. [/INST] <</SYS>>
"""
return claim_detection_prompt
# Page and Title Configuration
st.set_page_config(page_title="CER - Combining Evidence and Reasoning Demo", layout="wide", initial_sidebar_state="collapsed")
st.markdown("<h1 style='text-align: center; color: inherit;'>âī¸â¨ CER - Biomedical Fact Checker</h1>", unsafe_allow_html=True)
# Horizontal option menu for selecting the page
page = option_menu(None, ["Single claim check", "Page check", "Video check"],
icons=['check', 'ui-checks'],
menu_icon="cast", default_index=0, orientation="horizontal")
# Sidebar Configuration
st.sidebar.title("đŦ Combining Evidence and Reasoning Demo")
st.sidebar.caption("đ Fact-check biomedical claims using scientific evidence and reasoning.")
st.sidebar.markdown("---")
st.sidebar.caption("#### âšī¸ About")
st.sidebar.caption("This is a demo application for fact-checking biomedical claims using scientific evidence and reasoning. It uses a combination of language models, scientific literature, and reasoning to provide explanations for the predictions.")
# Load embeddings, PMIDs, and FAISS index
if 'embeddings_loaded' not in st.session_state:
embeddings, pmids, index = load_embeddings(embeddings_file, pmid_file, faiss_index_file, debug)
st.session_state.embeddings = embeddings
st.session_state.pmids = pmids
st.session_state.index = index
st.session_state.embeddings_loaded = True
else:
embeddings = st.session_state.embeddings
pmids = st.session_state.pmids
index = st.session_state.index
# Check if the claim and top_abstracts are in the session state
if 'claim' not in st.session_state:
st.session_state.claim = ""
if 'top_abstracts' not in st.session_state:
st.session_state.top_abstracts = []
#### Single claim check PAGE ####
if page == "Single claim check":
st.subheader("Single claim check")
st.caption("⨠Enter a single claim to fact-check and hit the button to see the results! đ")
st.session_state.claim = st.text_input("Claim to fact-check:")
if st.button("⨠Fact Check"):
if st.session_state.claim:
# Retrieve the top abstracts for the claim
top_abstracts = retrieve_top_abstracts(st.session_state.claim, model, index, pmids, data, top_k=5)
st.session_state.top_abstracts = top_abstracts
st.markdown("### **Results**")
with st.container():
for i, (abstract, pmid, distance) in enumerate(st.session_state.top_abstracts, 1):
pubmed_url = f"https://pubmed.ncbi.nlm.nih.gov/{pmid}/"
globals()[f"abstract_{i}"] = abstract
globals()[f"reference_{i}"] = pubmed_url
globals()[f"distance_{i}"] = distance
with st.spinner('đ We are checking...'):
try:
# Retrieve the question from the DataFrame
query = st.session_state.claim
# Generate the reasoning template
prompt_template = llm_reasoning_template(query)
# Add the abstracts to the prompt
for i in range(1, len(st.session_state.top_abstracts)):
prompt_template += f"{globals()[f'abstract_{i}']} ; "
prompt_template += f"{globals()[f'abstract_{i+1}']} [/INST]"
# Call the API
completion = client.chat.completions.create(
model="meta/llama-3.1-405b-instruct",
messages=[{"role": "user", "content": prompt_template}],
temperature=0.1,
top_p=0.7,
max_tokens=1024,
stream=True
)
# Collect the response
answer = ""
for chunk in completion:
if chunk.choices[0].delta.content:
answer += chunk.choices[0].delta.content
# Debug: Check the answer
if debug:
print(f"{answer}")
except Exception as e:
st.write(f"Error processing index: {e}")
with st.spinner('đ¤đŦ Justifying the check...'):
# Perform parsing and separate variables
zeroshot_classifier = pipeline(
"zero-shot-classification", model="MoritzLaurer/deberta-v3-large-zeroshot-v1.1-all-33"
)
first_label, justification, supporting, refusing, notes = parse_response(answer)
with st.spinner('đĩī¸ââī¸đ We are finding evidence...'):
# Generate the justification for the claim
result = generate_justification(st.session_state.claim, justification)
predicted_label, score_label = extract_label_and_score(result)
if predicted_label == "True":
color = f"rgba(0, 204, 0, {score_label})" # Green
elif predicted_label == "False":
color = f"rgba(204, 0, 0, {score_label})" # Red
elif predicted_label == "NEI":
color = f"rgba(255, 255, 0, {score_label})" # Yellow
else:
color = "black" # Default color
# Calculate the confidence score
confidence = f"{score_label * 100:.2f}%"
st.caption(f"đ The Claim: {st.session_state.claim}")
st.markdown(
f"**Prediction of claim:** Most likely <span style='color: {color}; font-weight: bold;'>{predicted_label}</span> with a confidence of <span style='color: {color}; font-weight: bold;'>{confidence}</span>",
unsafe_allow_html=True
)
st.markdown("### **Justification**")
st.markdown(f'<p> {justification}</p>', unsafe_allow_html=True)
# Extract the abstracts and references
abstracts = {}
for i in range(1, len(st.session_state.top_abstracts) + 1):
abstracts[f"abstract_{i}"] = globals()[f"abstract_{i}"]
pattern = r'"\s*(.*?)\s*"\s*\(abstract_(\d+)\)'
supporting_texts = []
for item in supporting:
try:
supporting_texts.append(item["text"])
except (TypeError, KeyError):
continue
supporting = clean_phrases(supporting_texts, pattern)
refusing_text = []
for item in refusing:
try:
refusing_text.append(item["text"])
except (TypeError, KeyError):
continue
refusing = clean_phrases(refusing_text, pattern)
if debug:
print(supporting)
print(refusing)
processed_abstracts = {}
for abstract_name, abstract_text in abstracts.items():
# Highlight supporting phrases in green
supporting_matches = [phrase for phrase in supporting if phrase["abstract"] == abstract_name]
abstract_text = highlight_phrases(abstract_text, supporting_matches, "lightgreen", predicted_label)
# Highlight refusing phrases in red
refusing_matches = [phrase for phrase in refusing if phrase["abstract"] == abstract_name]
abstract_text = highlight_phrases(abstract_text, refusing_matches, "red", predicted_label)
# Add only if supporting matches are found
if supporting_matches:
# Add the reference if a corresponding variable exists
reference_variable = f"reference_{abstract_name.split('_')[1]}"
if reference_variable in globals():
reference_value = globals()[reference_variable]
abstract_text += f"<br><br><strong>đ Reference:</strong> {reference_value}"
# Add the processed abstract
processed_abstracts[abstract_name] = abstract_text
# Iterate over the processed abstracts and remove duplicates
seen_contents = set() # Set to track already seen contents
evidence_counter = 1
# Display the results of the processed abstracts with numbered expanders
st.markdown("### **Scientific Evidence**")
# Add a legend for the colors
legend_html = """
<div style="display: flex; flex-direction: column; align-items: flex-start;">
<div style="display: flex; align-items: center; margin-bottom: 5px;">
<div style="width: 20px; height: 20px; background-color: lightgreen; margin-right: 10px; border-radius: 5px;"></div>
<div>Positive Evidence</div>
</div>
<div style="display: flex; align-items: center; margin-bottom: 5px;">
<div style="width: 20px; height: 20px; background-color: red; margin-right: 10px; border-radius: 5px;"></div>
<div>Negative Evidence</div>
</div>
<div style="display: flex; align-items: center; margin-bottom: 5px;">
<div style="width: 20px; height: 20px; background-color: yellow; margin-right: 10px; border-radius: 5px;"></div>
<div>Dubious Evidence</div>
</div>
</div>
"""
col1, col2 = st.columns([0.8, 0.2])
with col1:
if processed_abstracts:
tabs = st.tabs([f"Scientific Evidence {i}" for i in range(1, len(processed_abstracts) + 1)])
for tab, (name, content) in zip(tabs, processed_abstracts.items()):
if content not in seen_contents: # Check for duplicates
seen_contents.add(content)
with tab:
# Switch colors if the label is "False"
if predicted_label.lower() == "false":
content = content.replace("background-color: lightgreen", "background-color: tempcolor")
content = content.replace("background-color: red", "background-color: lightgreen")
content = content.replace("background-color: tempcolor", "background-color: red")
# Use `st.write` to display HTML directly
st.write(content, unsafe_allow_html=True)
else:
st.markdown("No relevant Scientific Evidence found")
with col2:
st.caption("Legend")
st.markdown(legend_html, unsafe_allow_html=True)
#### Web page check PAGE ####
elif page == "Page check":
st.subheader("Page check")
st.caption("⨠Enter a URL to fact-check the health-related claims on the page and hit the button to see the results! đ")
url = st.text_input("URL to fact-check:")
if st.button("⨠Fact Check") and url:
st.session_state.true_count = 0
st.session_state.false_count = 0
st.session_state.nei_count = 0
with st.spinner('đđ Extracting claims...'):
article_data = get_article_data(url)
try:
# Retrieve the claims from the article data
prompt_template = claim_detection_template(article_data)
# Call the API
completion = client.chat.completions.create(
model="meta/llama-3.1-405b-instruct",
messages=[{"role": "user", "content": prompt_template}],
temperature=0.1,
top_p=0.7,
max_tokens=1024,
stream=True
)
# Collect the response
answer = ""
for chunk in completion:
if chunk.choices[0].delta.content:
answer += chunk.choices[0].delta.content
# Debug: Controlla la risposta
print(f"{answer}")
except Exception as e:
print(f"Error {e}")
claims_dict = extract_and_split_claims(answer)
# Display the extracted claims
st.markdown("### **Claims Extracted**")
st.caption("đ Here are the health-related claims extracted from the page:")
cols = st.columns(3)
for i, (claim_key, claim_text) in enumerate(claims_dict.items(), 1):
col = cols[(i - 1) % 3]
with col.expander(f"Claim {i} đ", expanded=True):
st.write(claim_text)
# Display the results for the extracted claims
st.markdown("### **Results**")
st.caption("đ Here are the results for the extracted claims:")
for claim_key, claim_text in claims_dict.items():
st.session_state.claim = claim_text
if st.session_state.claim:
top_abstracts = retrieve_top_abstracts(st.session_state.claim, model, index, pmids, data, top_k=5)
st.session_state.top_abstracts = top_abstracts # Salva i risultati
with st.expander(f"âī¸ **Results for {claim_key}**", expanded=True):
for i, (abstract, pmid, distance) in enumerate(st.session_state.top_abstracts, 1):
pubmed_url = f"https://pubmed.ncbi.nlm.nih.gov/{pmid}/"
globals()[f"abstract_{i}"] = abstract
globals()[f"reference_{i}"] = pubmed_url
globals()[f"distance_{i}"] = distance
with st.spinner('đ We are checking...'):
try:
# Retrieve the question from the DataFrame
query = st.session_state.claim
# Generate the reasoning template
prompt_template = llm_reasoning_template(query)
# Add the abstracts to the prompt
for i in range(1, len(st.session_state.top_abstracts)):
prompt_template += f"{globals()[f'abstract_{i}']} ; "
prompt_template += f"{globals()[f'abstract_{i+1}']} [/INST]"
# Call the API
completion = client.chat.completions.create(
model="meta/llama-3.1-405b-instruct",
messages=[{"role": "user", "content": prompt_template}],
temperature=0.1,
top_p=0.7,
max_tokens=1024,
stream=True
)
# Collect the response
answer = ""
for chunk in completion:
if chunk.choices[0].delta.content:
answer += chunk.choices[0].delta.content
# Debug: Check the answer
if debug:
print(f"{answer}")
except Exception as e:
st.write(f"Error processing index: {e}")
with st.spinner('đ¤đŦ Justifying the check...'):
# Perform parsing and separate variables
zeroshot_classifier = pipeline(
"zero-shot-classification", model="MoritzLaurer/deberta-v3-large-zeroshot-v1.1-all-33"
)
first_label, justification, supporting, refusing, notes = parse_response(answer)
with st.spinner('đĩī¸ââī¸đ We are finding evidence...'):
# Generate the justification for the claim
result = generate_justification(st.session_state.claim, justification)
predicted_label, score_label = extract_label_and_score(result)
# Update the counts based on the predicted label
if predicted_label == "True":
color = f"rgba(0, 204, 0, {score_label})" # Green
st.session_state.true_count += 1
elif predicted_label == "False":
color = f"rgba(204, 0, 0, {score_label})" # Red
st.session_state.false_count += 1
elif predicted_label == "NEI":
color = f"rgba(255, 255, 0, {score_label})" # Yellow
st.session_state.nei_count += 1
else:
color = "black" # Default color
confidence = f"{score_label * 100:.2f}%"
st.caption(f"đ The Claim: {st.session_state.claim}")
st.markdown(
f"**Prediction of claim:** Most likely <span style='color: {color}; font-weight: bold;'>{predicted_label}</span> with a confidence of <span style='color: {color}; font-weight: bold;'>{confidence}</span>",
unsafe_allow_html=True
)
st.markdown("### **Justification**")
st.markdown(f'<p> {justification}</p>', unsafe_allow_html=True)
abstracts = {}
for i in range(1, len(st.session_state.top_abstracts) + 1):
abstracts[f"abstract_{i}"] = globals()[f"abstract_{i}"]
pattern = r'"\s*(.*?)\s*"\s*\(abstract_(\d+)\)'
supporting_texts = []
for item in supporting:
try:
supporting_texts.append(item["text"])
except (TypeError, KeyError):
continue
supporting = clean_phrases(supporting_texts, pattern)
refusing_text = []
for item in refusing:
try:
refusing_text.append(item["text"])
except (TypeError, KeyError):
continue
refusing = clean_phrases(refusing_text, pattern)
if debug:
print(supporting)
print(refusing)
processed_abstracts = {}
for abstract_name, abstract_text in abstracts.items():
# Highlight supporting phrases in green
supporting_matches = [phrase for phrase in supporting if phrase["abstract"] == abstract_name]
abstract_text = highlight_phrases(abstract_text, supporting_matches, "lightgreen", predicted_label)
# Highlight refusing phrases in red
refusing_matches = [phrase for phrase in refusing if phrase["abstract"] == abstract_name]
abstract_text = highlight_phrases(abstract_text, refusing_matches, "red", predicted_label)
# Add only if supporting matches are found
if supporting_matches:
# Add the reference if a corresponding variable exists
reference_variable = f"reference_{abstract_name.split('_')[1]}"
if reference_variable in globals():
reference_value = globals()[reference_variable]
abstract_text += f"<br><br><strong>đ Reference:</strong> {reference_value}"
# Add the processed abstract
processed_abstracts[abstract_name] = abstract_text
# Iterate over the processed abstracts and remove duplicates
seen_contents = set() # Set to track already seen contents
evidence_counter = 1
# Display the results of the processed abstracts with numbered expanders
st.markdown("### **Scientific Evidence**")
# Add a legend for the colors
legend_html = """
<div style="display: flex; flex-direction: column; align-items: flex-start;">
<div style="display: flex; align-items: center; margin-bottom: 5px;">
<div style="width: 20px; height: 20px; background-color: lightgreen; margin-right: 10px; border-radius: 5px;"></div>
<div>Positive Evidence</div>
</div>
<div style="display: flex; align-items: center; margin-bottom: 5px;">
<div style="width: 20px; height: 20px; background-color: red; margin-right: 10px; border-radius: 5px;"></div>
<div>Negative Evidence</div>
</div>
<div style="display: flex; align-items: center; margin-bottom: 5px;">
<div style="width: 20px; height: 20px; background-color: yellow; margin-right: 10px; border-radius: 5px;"></div>
<div>Dubious Evidence</div>
</div>
</div>
"""
col1, col2 = st.columns([0.8, 0.2])
with col1:
if processed_abstracts:
tabs = st.tabs([f"Scientific Evidence {i}" for i in range(1, len(processed_abstracts) + 1)])
for tab, (name, content) in zip(tabs, processed_abstracts.items()):
if content not in seen_contents: # Check for duplicates
seen_contents.add(content)
with tab:
# Switch colors if the label is "False"
if predicted_label.lower() == "false":
content = content.replace("background-color: lightgreen", "background-color: tempcolor")
content = content.replace("background-color: red", "background-color: lightgreen")
content = content.replace("background-color: tempcolor", "background-color: red")
# Use `st.write` to display HTML directly
st.write(content, unsafe_allow_html=True)
else:
st.markdown("No relevant Scientific Evidence found")
with col2:
st.caption("Legend")
st.markdown(legend_html, unsafe_allow_html=True)
st.markdown("### **Page Summary**")
st.caption("đ Here is a summary of the results for the extracted claims:")
# Labels and Colors
labels = ['True', 'False', 'NEI']
colors = ['green', 'red', 'yellow']
# Sizes of the pie chart
sizes = [
st.session_state.true_count,
st.session_state.false_count,
st.session_state.nei_count
]
# Configure the Pie Chart Options
options = {
"tooltip": {"trigger": "item"},
"legend": {"top": "5%", "left": "center"},
"series": [
{
"name": "Document Status",
"type": "pie",
"radius": ["40%", "70%"],
"avoidLabelOverlap": False,
"itemStyle": {
"borderRadius": 10,
"borderColor": "#fff",
"borderWidth": 2,
},
"label": {"show": True, "position": "center"},
"emphasis": {
"label": {"show": True, "fontSize": "20", "fontWeight": "bold"}
},
"labelLine": {"show": False},
"data": [
{"value": sizes[0], "name": labels[0], "itemStyle": {"color": colors[0]}},
{"value": sizes[1], "name": labels[1], "itemStyle": {"color": colors[1]}},
{"value": sizes[2], "name": labels[2], "itemStyle": {"color": colors[2]}},
],
}
],
}
# Display the Pie Chart
st1, st2 = st.columns([0.6, 0.4])
with st1:
st.markdown("#### The page is :")
true_count = st.session_state.true_count
false_count = st.session_state.false_count
nei_count = st.session_state.nei_count
if true_count > 0 and false_count == 0:
reliability = '<span style="color: darkgreen; font-weight: bold;">Highly Reliable</span>'
elif true_count > false_count:
reliability = '<span style="color: lightgreen; font-weight: bold;">Fairly Reliable</span>'
elif true_count == 0:
reliability = '<span style="color: darkred; font-weight: bold;">Strongly Considered Unreliable</span>'
elif false_count > true_count:
reliability = '<span style="color: lightcoral; font-weight: bold;">Unlikely to be Reliable</span>'
elif (true_count == false_count) or (nei_count > true_count and nei_count > false_count and true_count != 0 and false_count != 0):
reliability = '<span style="color: yellow; font-weight: bold;">NEI</span>'
else:
reliability = '<span style="color: black; font-weight: bold;">Completely Reliable</span>'
st.markdown(f"The page is considered {reliability} because it contains {true_count} true claims, {false_count} false claims, and {nei_count} claims with not enough information.", unsafe_allow_html=True)
with st.popover("âšī¸ Understanding the Truthfulness Ratings"):
st.markdown("""
The reliability of the page is determined based on the number of true and false claims extracted from the page.
- If the page contains only true claims, it is considered **Highly Reliable**.
- If the page has more true claims than false claims, it is considered **Fairly Reliable**.
-If the page has more false claims than true claims, it is considered **Unlikely to be Reliable**.
- If the page contains only false claims, it is considered **Strongly Considered Unreliable**.
- If the page has an equal number of true and false claims, it is considered **NEI**.
""")
with st2:
st_echarts(
options=options, height="500px",
)
#### Video check PAGE ####
elif page == "Video check":
st.subheader("Video claim check")
st.caption("⨠Upload a video to fact-check and hit the button to see the results! đ")
video = st.file_uploader("Choose a video...", type=["mp4"])
video_box, text_box = st.columns([0.6, 0.4])
if video is not None:
with video_box:
with st.expander("âļī¸ See uploaded video", expanded=False):
st.video(video)
if st.button("⨠Fact Check") and video is not None:
with st.spinner('đĨđ Processing video...'):
# Save the video to a temporary file
with tempfile.NamedTemporaryFile(delete=False, suffix=".mp4") as temp_video:
temp_video.write(video.read())
temp_video_path = temp_video.name
# Extract the audio from the video
temp_audio_path = tempfile.NamedTemporaryFile(delete=False, suffix=".wav").name
ffmpeg.input(temp_video_path).output(temp_audio_path, acodec="pcm_s16le", ar=16000, ac=1).run(overwrite_output=True)
# Transcribe the audio
model1 = whisper.load_model("small")
result = model1.transcribe(temp_audio_path)
# Extract the final text
transcribed_text = result["text"]
with text_box:
with st.expander("đ Transcribed Text", expanded=False):
st.caption("đ Here is the transcribed text from the uploaded video:")
container = st.container(height=322)
container.write(transcribed_text)
st.session_state.true_count = 0
st.session_state.false_count = 0
st.session_state.nei_count = 0
with st.spinner('đđ Extracting claims from video...'):
try:
# Retrieve the claims from the video
prompt_template = claim_detection_template(transcribed_text)
# Call the API
completion = client.chat.completions.create(
model="meta/llama-3.1-405b-instruct",
messages=[{"role": "user", "content": prompt_template}],
temperature=0.1,
top_p=0.7,
max_tokens=1024,
stream=True
)
# Collect the response
answer = ""
for chunk in completion:
if chunk.choices[0].delta.content:
answer += chunk.choices[0].delta.content
# Debug: Check the answer
if debug:
print(f"{answer}")
except Exception as e:
print(f"Error {e}")
claims_dict = extract_and_split_claims(answer)
# Display the extracted claims
st.markdown("### **Claims Extracted**")
st.caption("đ Here are the health-related claims extracted from the video:")
cols = st.columns(3)
for i, (claim_key, claim_text) in enumerate(claims_dict.items(), 1):
col = cols[(i - 1) % 3]
with col.expander(f"Claim {i} đ", expanded=True):
st.write(claim_text)
# Display the results for the extracted claims
st.markdown("### **Results**")
st.caption("đ Here are the results for the extracted claims:")
for claim_key, claim_text in claims_dict.items():
st.session_state.claim = claim_text
if st.session_state.claim:
top_abstracts = retrieve_top_abstracts(st.session_state.claim, model, index, pmids, data, top_k=5)
st.session_state.top_abstracts = top_abstracts # Salva i risultati
with st.expander(f"âī¸ **Results for {claim_key}**", expanded=True):
for i, (abstract, pmid, distance) in enumerate(st.session_state.top_abstracts, 1):
pubmed_url = f"https://pubmed.ncbi.nlm.nih.gov/{pmid}/"
globals()[f"abstract_{i}"] = abstract
globals()[f"reference_{i}"] = pubmed_url
globals()[f"distance_{i}"] = distance
with st.spinner('đ We are checking...'):
try:
# Retrieve the question from the DataFrame
query = st.session_state.claim
# Generate the reasoning template
prompt_template = llm_reasoning_template(query)
# Add the abstracts to the prompt
for i in range(1, len(st.session_state.top_abstracts)):
prompt_template += f"{globals()[f'abstract_{i}']} ; "
prompt_template += f"{globals()[f'abstract_{i+1}']} [/INST]"
# Call the API
completion = client.chat.completions.create(
model="meta/llama-3.1-405b-instruct",
messages=[{"role": "user", "content": prompt_template}],
temperature=0.1,
top_p=0.7,
max_tokens=1024,
stream=True
)
# Collect the response
answer = ""
for chunk in completion:
if chunk.choices[0].delta.content:
answer += chunk.choices[0].delta.content
# Debug: Check the answer
if debug:
print(f"{answer}")
except Exception as e:
st.write(f"Error processing index: {e}")
with st.spinner('đ¤đŦ Justifying the check...'):
# Perform parsing and separate variables
zeroshot_classifier = pipeline(
"zero-shot-classification", model="MoritzLaurer/deberta-v3-large-zeroshot-v1.1-all-33"
)
first_label, justification, supporting, refusing, notes = parse_response(answer)
with st.spinner('đĩī¸ââī¸đ We are finding evidence...'):
# Generate the justification for the claim
result = generate_justification(st.session_state.claim, justification)
predicted_label, score_label = extract_label_and_score(result)
# Update the counts based on the predicted label
if predicted_label == "True":
color = f"rgba(0, 204, 0, {score_label})" # Green
st.session_state.true_count += 1
elif predicted_label == "False":
color = f"rgba(204, 0, 0, {score_label})" # Red
st.session_state.false_count += 1
elif predicted_label == "NEI":
color = f"rgba(255, 255, 0, {score_label})" # Yellow
st.session_state.nei_count += 1
else:
color = "black" # Default color
confidence = f"{score_label * 100:.2f}%"
st.caption(f"đ The Claim: {st.session_state.claim}")
st.markdown(
f"**Prediction of claim:** Most likely <span style='color: {color}; font-weight: bold;'>{predicted_label}</span> with a confidence of <span style='color: {color}; font-weight: bold;'>{confidence}</span>",
unsafe_allow_html=True
)
st.markdown("### **Justification**")
st.markdown(f'<p> {justification}</p>', unsafe_allow_html=True)
abstracts = {}
for i in range(1, len(st.session_state.top_abstracts) + 1):
abstracts[f"abstract_{i}"] = globals()[f"abstract_{i}"]
pattern = r'"\s*(.*?)\s*"\s*\(abstract_(\d+)\)'
supporting_texts = []
for item in supporting:
try:
supporting_texts.append(item["text"])
except (TypeError, KeyError):
continue
supporting = clean_phrases(supporting_texts, pattern)
refusing_text = []
for item in refusing:
try:
refusing_text.append(item["text"])
except (TypeError, KeyError):
continue
refusing = clean_phrases(refusing_text, pattern)
processed_abstracts = {}
for abstract_name, abstract_text in abstracts.items():
# Highlight supporting phrases in green
supporting_matches = [phrase for phrase in supporting if phrase["abstract"] == abstract_name]
abstract_text = highlight_phrases(abstract_text, supporting_matches, "lightgreen", predicted_label)
# Highlight refusing phrases in red
refusing_matches = [phrase for phrase in refusing if phrase["abstract"] == abstract_name]
abstract_text = highlight_phrases(abstract_text, refusing_matches, "red", predicted_label)
if supporting_matches:
# Add the reference if a corresponding variable exists
reference_variable = f"reference_{abstract_name.split('_')[1]}"
if reference_variable in globals():
reference_value = globals()[reference_variable]
abstract_text += f"<br><br><strong>đ Reference:</strong> {reference_value}"
# Add the processed abstract
processed_abstracts[abstract_name] = abstract_text
# Iterate over the processed abstracts and remove duplicates
seen_contents = set() # Set to track already seen contents
evidence_counter = 1
# Display the results of the processed abstracts with numbered expanders
st.markdown("### **Scientific Evidence**")
# Add a legend for the colors
legend_html = """
<div style="display: flex; flex-direction: column; align-items: flex-start;">
<div style="display: flex; align-items: center; margin-bottom: 5px;">
<div style="width: 20px; height: 20px; background-color: lightgreen; margin-right: 10px; border-radius: 5px;"></div>
<div>Positive Evidence</div>
</div>
<div style="display: flex; align-items: center; margin-bottom: 5px;">
<div style="width: 20px; height: 20px; background-color: red; margin-right: 10px; border-radius: 5px;"></div>
<div>Negative Evidence</div>
</div>
<div style="display: flex; align-items: center; margin-bottom: 5px;">
<div style="width: 20px; height: 20px; background-color: yellow; margin-right: 10px; border-radius: 5px;"></div>
<div>Dubious Evidence</div>
</div>
</div>
"""
col1, col2 = st.columns([0.8, 0.2])
with col1:
if processed_abstracts:
tabs = st.tabs([f"Scientific Evidence {i}" for i in range(1, len(processed_abstracts) + 1)])
for tab, (name, content) in zip(tabs, processed_abstracts.items()):
if content not in seen_contents: # Check for duplicates
seen_contents.add(content)
with tab:
# Switch colors if the label is "False"
if predicted_label.lower() == "false":
content = content.replace("background-color: lightgreen", "background-color: tempcolor")
content = content.replace("background-color: red", "background-color: lightgreen")
content = content.replace("background-color: tempcolor", "background-color: red")
# Use `st.write` to display HTML directly
st.write(content, unsafe_allow_html=True)
else:
st.markdown("No relevant Scientific Evidence found")
with col2:
st.caption("Legend")
st.markdown(legend_html, unsafe_allow_html=True)
st.markdown("### **Video Summary**")
st.caption("đ Here is a summary of the results for the extracted claims:")
# Labels and Colors
labels = ['True', 'False', 'NEI']
colors = ['green', 'red', 'yellow']
# Sizes of the pie chart
sizes = [
st.session_state.true_count,
st.session_state.false_count,
st.session_state.nei_count
]
# Configure the Pie Chart Options
options = {
"tooltip": {"trigger": "item"},
"legend": {"top": "5%", "left": "center"},
"series": [
{
"name": "Document Status",
"type": "pie",
"radius": ["40%", "70%"],
"avoidLabelOverlap": False,
"itemStyle": {
"borderRadius": 10,
"borderColor": "#fff",
"borderWidth": 2,
},
"label": {"show": True, "position": "center"},
"emphasis": {
"label": {"show": True, "fontSize": "20", "fontWeight": "bold"}
},
"labelLine": {"show": False},
"data": [
{"value": sizes[0], "name": labels[0], "itemStyle": {"color": colors[0]}},
{"value": sizes[1], "name": labels[1], "itemStyle": {"color": colors[1]}},
{"value": sizes[2], "name": labels[2], "itemStyle": {"color": colors[2]}},
],
}
],
}
# Display the Pie Chart
st1, st2 = st.columns([0.6, 0.4])
with st1:
st.markdown("#### The Video is :")
true_count = st.session_state.true_count
false_count = st.session_state.false_count
nei_count = st.session_state.nei_count
if true_count > 0 and false_count == 0:
reliability = '<span style="color: darkgreen; font-weight: bold;">Highly Reliable</span>'
elif true_count > false_count:
reliability = '<span style="color: lightgreen; font-weight: bold;">Fairly Reliable</span>'
elif true_count == 0:
reliability = '<span style="color: darkred; font-weight: bold;">Strongly Considered Unreliable</span>'
elif false_count > true_count:
reliability = '<span style="color: lightcoral; font-weight: bold;">Unlikely to be Reliable</span>'
elif (true_count == false_count) or (nei_count > true_count and nei_count > false_count and true_count != 0 and false_count != 0):
reliability = '<span style="color: yellow; font-weight: bold;">NEI</span>'
else:
reliability = '<span style="color: black; font-weight: bold;">Completely Reliable</span>'
st.markdown(f"The video is considered {reliability} because it contains {true_count} true claims, {false_count} false claims, and {nei_count} claims with not enough information.", unsafe_allow_html=True)
with st.popover("âšī¸ Understanding the Truthfulness Ratings"):
st.markdown("""
The reliability of the video is determined based on the number of true and false claims extracted from the video.
- If the video contains only true claims, it is considered **Highly Reliable**.
- If the video has more true claims than false claims, it is considered **Fairly Reliable**.
- If the video has more false claims than true claims, it is considered **Unlikely to be Reliable**.
- If the video contains only false claims, it is considered **Strongly Considered Unreliable**.
- If the video has an equal number of true and false claims, it is considered **NEI**.
""")
with st2:
st_echarts(
options=options, height="500px",
)