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marieltv/README.md

AI/ML Engineer | Computer Vision | Quantitative Finance | Python

Bachelor’s Degree — Economics (Economic Cybernetics) & Master’s Degree — Computer Science

🛠 Skills & Technologies

🐍 Programming & Data

Python Pandas NumPy scipy scikit-learn SQL

🤖 Machine Learning & Computer Vision

PyTorch OpenCV YOLO

🧠 AI Engineering & LLMs

LangChain FAISS FastAPI OpenAI

📈 Visualisation & Analysis

Matplotlib Seaborn Plotly Streamlit

⚙️ Tools & Environment

Git GitHub Actions Kaggle Google%20Colab

🚀 Selected Projects

RAG Document Q&A
End-to-end RAG pipeline with format-aware chunking (PDF, DOCX, CSV, TXT), cross-encoder reranking over FAISS, and per-citation confidence scores. 30 unit tests, deployed to Streamlit Cloud.
Python · LangChain · FAISS · FastAPI · Streamlit · OpenAI

YOLOv8 Segmentation Optimisation
Fine-tuned YOLOv8 for ship instance segmentation in SAR satellite imagery — built a custom attention module and Focal-Tversky loss, optimised via NSGA-II with 5-fold CV, achieving +1% improvement in mask mAP50-95 over the baseline.
Python · NumPy · YOLO · Ultralytics · OpenCV · PyTorch · Albumentations · DEAP

Portfolio Optimisation — Out-of-Sample Evaluation
Rolling walk-forward backtest comparing Equal Weight, Minimum Variance, Risk Parity, and Regularised Max Sharpe on US defence equities. Includes predicted vs actual Sharpe/Sortino analysis, Ledoit-Wolf and James-Stein shrinkage estimators, and an interactive Streamlit dashboard.
Python · scipy · pandas · scikit-learn · Streamlit · Plotly · GitHub Actions

📫 Contact me

🌱 Outside of Work

  • Health and well-being 🌿
  • Classical music and the arts 🎻

Popular repositories Loading

  1. yolov8-seg-modified yolov8-seg-modified Public

    Ships Detection & Segmentation System with Multi-Objective Optimization

    Python

  2. marieltv marieltv Public

  3. portfolio_optimization portfolio_optimization Public

    Walk-forward portfolio optimisation backtest comparing four allocation strategies with predicted vs actual risk analysis and an interactive Streamlit dashboard.

    Python

  4. IRRBB_model IRRBB_model Public

    Python implementation of the BCBS 368 IRRBB standardised framework — EVE & NII sensitivity across 6 prescribed shock scenarios, 19 repricing buckets, full cash flow discounting, Streamlit dashboard.

    Python

  5. rag_assistant rag_assistant Public

    End-to-end Retrieval-Augmented Generation (RAG) system for document question answering with source citations, similarity scores, and cross-encoder reranking.

    Python