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  1. online-retail-eda online-retail-eda Public

    Auditable data cleaning pipeline and EDA on 542k real e-commerce transactions — every dropped row has a written rationale, backed by 24 tests and CI.

    Jupyter Notebook

  2. retail-dimensional-model retail-dimensional-model Public

    Star schema over 542k real transactions on DuckDB, with a 63-test data quality contract and a from-scratch dbt-style build runner (ref/source, DAG, SCD2).

    Python

  3. repeat-purchase-prediction repeat-purchase-prediction Public

    End-to-end repeat-purchase prediction with a leakage-free temporal design, business-aligned ranking metrics, and an executable no-leakage guarantee.

    Python 1

  4. product-recommender product-recommender Public

    Implicit-feedback recommender with from-scratch ALS in NumPy, a baseline-proof evaluation protocol, and beyond-accuracy metrics (coverage, novelty, personalisation).

    Python

  5. scraping-pipeline scraping-pipeline Public

    Polite, resumable web scraper with robots.txt compliance, backoff retries, incremental re-scraping, and a fully offline test suite (32 tests, no network).

    Python