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byungchan3077/README.md

👋 Hi, I'm Byungchan Kim

🛠 Tech Stack

Python JavaScript Java Node.js Pandas XGBoost

📊 Projects

🔍 Financial Factor Analysis

Empirical analysis of S&P500 return predictability and Fama-French factor premiums

  • Verified weak-form EMH using XGBoost + macroeconomic variables (p-value: 0.063)
  • Analyzed FF3/FF5 factor premium decay before and after paper publication
  • Compared US vs Asia-Pacific factor premiums — found HML still strong in Asia
  • Key insight: Markets converge toward efficiency as information becomes public, but information costs sustain residual premiums (Grossman-Stiglitz Paradox)

→ Repository

✈️ Cost Effective Travel

CLI tool that calculates Real Purchasing Power Index (PPI) to recommend the most financially efficient travel destinations

  • Combines real-time exchange rates with local cost-of-living data
  • Survival basket logic based on Big Mac Index + daily essentials
  • Analyzes 9 popular destinations and generates automated reports

→ Repository

📰 What's Today

AI-curated daily news discussion platform

  • Vanilla JS + Vite / Node.js + Express / Supabase (PostgreSQL)
  • Google Gemini API for automated daily issue generation
  • JWT authentication + Google/GitHub OAuth
  • GitHub Actions CI/CD with branch protection

→ Repository

🌱 Currently Learning

  • Python Data Analysis (Pandas, XGBoost, Scikit-learn)
  • Spring Boot
  • Financial Data Analysis & Quantitative Research

📞 Contact Me

Popular repositories Loading

  1. forking_test forking_test Public

    Forked from ST-ITM/forking_test

    Repository for OSS course in the ITM major. The purpose is for students to test the GitHub forking and pull request workflow

  2. oss-calculator-junit oss-calculator-junit Public

    Forked from gimbyeongchan29-stack/oss-calculator-junit

    Sample repository using JUnit and Maven

    Java

  3. expense-splitter expense-splitter Public

    Forked from ST-ITM-2025-2/expense-splitter

    Repository used for the Open Source Software class assignment 2

    Java

  4. byungchan3077 byungchan3077 Public

    my github profile

  5. Cost_Effective_Travel Cost_Effective_Travel Public

    Python 1

  6. financial-factor-analysis financial-factor-analysis Public

    Empirical analysis of S&P500 return predictability using macroeconomic factors and XGBoost — testing weak-form market efficiency

    Jupyter Notebook