End-to-end climate signal classifier (FastAPI + React) using OWID CO₂ data. Time-split validation with HistGradientBoosting + interactive dashboard.
Answers "why did the KPI move": detects abnormal metric shifts and decomposes the delta by dimension, separating rate changes from mix shifts with contributions that reconcile to the total exactly. Drilled straight to the seeded root cause on demo data; 1.6M rows/s.
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