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1. promotion-response-prediction promotion-response-prediction Public

   Predicts customer response to retail promotions using LightGBM and leakage-free RFM feature engineering. Achieves validation AUC of 0.713 on a binary classification task. Includes SHAP interpretabi…

   Jupyter Notebook

2. conversational-rag-agent conversational-rag-agent Public

   RAG-powered GitHub Documentation Assistant with multi-turn support workflows. Features intent routing, ChromaDB vector search with cited answers, SQLite-backed ticketing/billing, voice I/O, guardra…

   Python

3. esg-financial-returns esg-financial-returns Public

   Empirical analysis of ESG performance and financial returns using CRSP, Compustat, and Refinitiv data. Panel of 18K+ U.S. firm-years (2013–2023). Covers multi-database merging, OLS/panel regression…

   Jupyter Notebook

4. hot-delivery-optimization hot-delivery-optimization Public

   Prescriptive routing and assignment models for online food delivery, developed for an Uber Eats case study. Progresses from single-driver MIP to a real-time cluster-then-route heuristic across 4 mo…

   Jupyter Notebook

5. seoul-national-bank-credit-risk seoul-national-bank-credit-risk Public

   Excel-based credit risk analysis and portfolio optimization for 168 loan applicants — borrower scoring, default strategy modelling, Monte Carlo simulation, and Solver optimization under VaR constra…

6. emergency-department-operations-analytics emergency-department-operations-analytics Public

   This project focuses on applying process mining and advanced analytics to analyze and improve patient flow in an Emergency Department (ED) setting, using real-world event log data.

   Python