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cryptopunks-sql-analysis
cryptopunks-sql-analysis PublicSQL analysis of 19,920 CryptoPunk NFT sales — window functions, ranking, and a data quality investigation in MySQL
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shopping-recommender-system
shopping-recommender-system PublicCategory recommender on 3 years of retail transactions — implicit feedback, top-K ranking evaluation, benchmarked against a popularity baseline.
Jupyter Notebook
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saas-retention-analysis
saas-retention-analysis PublicWhich marketing channels are worth the money? Cohort retention, churn drivers and customer value in SQL
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campaign-lift-analysis
campaign-lift-analysis PublicDid the marketing campaigns work? Measuring campaign lift on real retail data — and showing why the obvious answer is wrong.
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