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Dimitris Markopoulos' Github

🎓 M.A. in Statistics at Columbia University (4.19/4.33)
🎓 B.S. in Applied Mathematics & Statistics from Stony Brook University (3.99/4.0)


Project Summary
financial-graphical-models Sparse graphical models on equity returns for risk modeling
regime-detection Unsupervised market regime detection using high-dimensional macro indicators.
self-instruct-gpt4mini Finetune LLM by bootstraping off its own generated {instruction: answer} data; prompt engineering + OpenAI api
xrt-trading-case-study Built and backtested deviation- and volatility-based trading strategies on XRT, analyzing hit rates, Sharpe ratios, and robustness, concluding no persistent alpha after risk adjustments.
mnist-image-classification Comparing Lasso, Naive Bayes, Ridge, SVM, and Group Lasso
tcga-brca-analysis Unsupervised analysis of TCGA Breast Cancer (BRCA) gene-expression data
trees-ensembles-neural-networks Decision trees, boosting, and neural networks on UCI income data with tuning, overfitting analysis, and feature interpretation.
algorithmic-trading Systematic trading pipelines using ML and time-series cross-validation
latent-semantic-clustering UMAP + EM-GMM clustering of book chapters via NLP frequency vectors
quantitative-finance BSM & Heston option pricing, Monte Carlo simulations, VaR, etc
crime-predictor-analysis Predicting crime using UCI community features; LASSO, Ridge, Elastic Net, kernel regression + manually implemented CV
sepsis-prediction Cleaned & merged using SQL, then applied ML pipeline to CUMC + NYP secure patient-level dataset; HIPAA-compliant experiments using Azure Secure Environment; certified.


🌐 Connect With Me
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GitHub
dimitris.markopoulos@columbia.edu

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"Averaged over all possible data-generating distributions, every classification algorithm has the same error rate."
— David H. Wolpert, No Free Lunch Theorems for Optimization

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  1. financial-graphical-models financial-graphical-models Public

    End-to-end framework for discovering interpretable dependency structure in equity markets using graphical models. Implements Graphical Lasso, nonparanormal models, the PC algorithm, and VAR(1) Gran…

    Jupyter Notebook

  2. xrt-trading-case-study xrt-trading-case-study Public

    This project explores a systematic trading case study on the SPDR S&P Retail ETF (XRT).

    Python

  3. regime-detection regime-detection Public

    This project applies unsupervised learning to detect latent financial market regimes from macro time series data. It emphasizes stability-based model selection across preprocessing, dimensionality …

    Jupyter Notebook

  4. quantitative-finance quantitative-finance Public

    A collection of quantitative finance projects covering option pricing, risk analysis, volatility modeling, and investment strategies. Includes Monte Carlo simulations, Black-Scholes & Heston models…

    Jupyter Notebook 2 1