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cemyildizcy/README.md

Cem Yıldız

Mathematics and Computer Sciences undergraduate at Eskişehir Osmangazi University. I will be in my third year in 2026–27.

I am strengthening my foundations in machine learning and deep learning through projects and careful model evaluation. I also build practical software around data and AI.

Team experience

Software Team Member — Earendil Rover Team

October 2026 – Present · Eskişehir, Türkiye

Member of the software department of the rover team under the IEEE Eskişehir Technical University Student Branch.

Selected work

  • Bike Demand: Temporal ML — a chronological benchmark on the UCI Bike Sharing dataset. The selected calendar-plus-observed-weather ridge model reports final-test MAE 77.79 bikes versus 103.54 for a seasonal-naive baseline. One city, two years; observed weather is not an advance forecast.
  • Fashion-MNIST: NumPy MLP Study — compared a NumPy softmax baseline with a two-hidden-layer ReLU MLP at 10% and 100% training data, including two synthetic noise conditions. At 100%, the MLP scored 3.47 percentage points higher in clean test accuracy in one seed/split; AI-assisted, descriptive results only.
  • GündemAI — an Android news app available on Google Play.
  • WC2026 AI Simulator — an educational tournament simulator using Poisson distributions and Monte Carlo. It is not a trained machine-learning model.

Portfolio · LinkedIn · X · Email

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  1. wc2026-ai-simulator wc2026-ai-simulator Public

    Educational football tournament simulator using Poisson scoring, Monte Carlo and Streamlit.

    Python 1

  2. cemyildiz-portfolio cemyildiz-portfolio Public

    Personal portfolio and data science case-study website built with Next.js and TypeScript.

    TypeScript 1

  3. bike-demand-temporal-ml bike-demand-temporal-ml Public

    Leakage-aware temporal ML benchmark for hourly bike demand using UCI Bike Sharing

    Python

  4. fashion-mnist-numpy-capacity fashion-mnist-numpy-capacity Public

    NumPy Fashion-MNIST benchmark comparing softmax and ReLU MLP across data budgets and synthetic pixel noise

    Python