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JemHRice/README.md

Hi, I'm Jem 👋

Data Analyst with a machine learning focus, based in Sydney. I spent 3.5 years running operations and P&L for a community sports non-profit, then made a deliberate pivot into data: 99% average in the HyperionDev/UNSW Data Science Bootcamp, Microsoft PL-300 certified, and a portfolio of deployed projects below.

I build things to understand them. Everything here runs.

🚀 Featured Projects

Project What it does Stack Live
OwnYourShip CLI that quizzes you on your own LLM-generated code - you shouldn't ship what you can't explain Python, FastAPI, SQLite, Anthropic API -
House Price Predictor XGBoost model, 95.27% R² on Sydney property data, 67% error reduction vs baseline Python, XGBoost, Streamlit Live
Neural Net from Scratch Full MLP in pure NumPy - 97.28% on MNIST, 2.2x faster than sklearn Python, NumPy -
Transformer Attention Visualiser Interactive app showing attention patterns forming in real time - 500+ users Python, NumPy, Streamlit Live
RL Foundations: Sutton & Barto Every algorithm from Chapters 1-13, tabular (NumPy) + deep (PyTorch) Python, PyTorch, Gymnasium Live
Power BI Sales Analysis Star schema + 15 DAX measures; surfaced $8.9M recovery opportunity Power BI, DAX -

🛠 Stack

Python · SQL (PostgreSQL, SQLite) · Pandas · NumPy · scikit-learn · XGBoost · PyTorch · TensorFlow · Power BI (PL-300) · Streamlit · Git · Docker

📫 Contact

LinkedIn · Blog on Dev.to · [email protected]

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  1. ownyourship ownyourship Public

    CLI tool that quizzes developers on their own LLM-generated code. Own what you ship.

    Python

  2. house-price-predictor house-price-predictor Public

    XGBoost Sydney house price predictor - 95.27% R², live Streamlit demo

    Python 1

  3. neural-net neural-net Public

    Multi-layer perceptron from scratch in NumPy - 97.28% on MNIST, no ML libraries

    Python

  4. transformer-visualise-app transformer-visualise-app Public

    Interactive transformer attention visualiser - watch attention patterns form in real time

    Python

  5. sutton-barto-rl sutton-barto-rl Public

    Every algorithm from Sutton & Barto Ch 1-13 - tabular RL in NumPy, deep RL in PyTorch

    Python

  6. power-bi-sales-analysis power-bi-sales-analysis Public

    Power BI dashboard with star schema + 15 DAX measures - identified $8.9M recovery opportunity