Arabic Fake News Detection: A Lightweight NLP Solution Based on TF-IDF and Logistic Regression

In the era of information explosion, fake news spreads faster than the truth. While research on English fake news detection is mature, solutions for Arabic are scarce. This project fills the gap by providing a lightweight machine learning solution for Arabic text, using TF-IDF feature extraction, logistic regression classifier, and a Streamlit interface to create an easy-to-use fake news identification tool.

Arabic NLP faces unique challenges: complex morphology (a single root can derive dozens of forms), dialect diversity (significant differences between Modern Standard Arabic and regional dialects), right-to-left writing direction, letter ligature rules, and no case distinction. Directly applying English models yields poor results, so specialized handling of language characteristics is necessary.

A classic machine learning pipeline is adopted: Text cleaning (standardizing Arabic letter variants, removing vowel diacritics, handling repeated characters, filtering stop words) → TF-IDF feature extraction (reducing the weight of common words, highlighting document-specific keywords) → Logistic regression classification (high interpretability, efficient computation, easy deployment).

The Streamlit-based web interface lowers the barrier to use—users don't need programming knowledge; they can paste Arabic news to get a true/fake judgment result. It may include confidence level display, sample news loading, and history record functions, designed with a user-centric approach.

Evaluation metrics include precision, recall, F1-score, and confusion matrix (to avoid misleading results from class imbalance). It faces adversarial challenges (malicious optimization of fake news writing), so regular model updates are needed. The lightweight solution facilitates rapid iteration.

Training data comes from public Arabic fake news datasets (e.g., ArFake). Preprocessing needs to handle class balance (oversampling/undersampling). Feature engineering can explore n-grams, character-level features, and domain-specific features (source domain, publication time, etc.).

The lightweight tech stack is easy to deploy (Docker containers, cloud platforms, edge devices). Expansion directions: support for more Arabic dialects, integration of deep learning comparison experiments, multilingual support, and real-time detection via browser plugins.

Social value: Helps identify fake news during politically sensitive periods or public health crises. Ethical considerations: Avoid abuse of censorship, prevent misreports from affecting creators; need transparency (explain model limitations), manual review mechanisms, and continuous monitoring of model performance.