SQL Window Functions for Real Product Analytics
ROW_NUMBER, RANK, LAG, LEAD and running totals—with real product analytics examples.
SQLProduct Analytics8 min read
Writing
Technical Notes for Practitioners
Educational articles about SQL, product metrics, statistics, ML and MLOps through concrete decisions.
Product Metrics That Actually Help You Make Decisions
How to define and interpret engagement metrics in the context of product decisions.
Product AnalyticsMetrics6 min read
PSI for Model Monitoring: Useful Signal, Not a Verdict
How to use Population Stability Index as contextual evidence alongside performance and business metrics.
MLOpsModel Monitoring10 min read
Statistical Significance Is Not a Product Decision
How p-values and confidence intervals inform evidence without making the product decision for you.
StatisticsExperimentation9 min read
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