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1. Toolkit Toolkit Public

   A/B testing with bootstrapping & permutation tests, and credit card fraud detection with imbalanced classification — Logistic Regression, Random Forest, Gradient Boosting

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2. ba-events-recommender ba-events-recommender Public

   End-to-end recommender system for Buenos Aires cultural events — web scraping, NLP feature engineering, TF-IDF cosine similarity, logistic regression, and Streamlit app

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3. credit-card-fraud-detection credit-card-fraud-detection Public

   Fraud detection on 284K imbalanced transactions — model comparison, threshold optimization, and business impact analysis using Random Forest, Gradient Boosting, and ensemble methods.

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