{"slug":"alirezarezvani-senior-data-scientist","source_name":"alirezarezvani/senior-data-scientist","name":"Alirezarezvani/Senior Data Scientist","description":"World-class senior data scientist skill specialising in statistical modeling, experiment design, causal inference, and predictive analytics. Covers A/B testing (sample sizing, two-proportion z-tests, Bonferroni correction), difference-in-differences, feature engineering pipelines (Scikit-learn, XGBoost), cross-validated model evaluation (AUC-ROC, AUC-PR, SHAP), and MLflow experiment tracking — using Python (NumPy, Pandas, Scikit-learn), R, and SQL. Use when designing or analysing controlled expe","version":1,"lift":{"pass_rate_delta_pts":16.67,"pass_rate_pct":79.2,"total_cases":24,"passed_cases":19,"tokens_delta_pct":117.4,"turns_delta_pct":0,"verdict":"mixed","benchmark_model":"gemini-3.6-flash","grading_method":"judged","completed_at":"2026-08-11T10:40:29.938551+00:00"},"skill_score":0.7917,"benchmark_models":[{"model":"gemini-3.6-flash","headline":true,"delta_pts":16.67,"with_pass_pct":79.2,"without_pass_pct":62.5,"tokens_delta_pct":117.4,"turns_delta_pct":0,"total_cases":24,"cases_aggregated":24,"verdict":"mixed","never_hurt":true,"completed_at":"2026-08-11T10:40:29.938551+00:00","run_id":"5732d6cd-7629-4717-ad67-12384bbc6b90","version_number":1,"is_latest_version":true,"gate":null}],"trust":{"skill_safety":"passed","safety_status":"clean","intent_verdict":"safe","content_status":"clean","indexable":true},"license":"MIT","install_count":0,"manifest_hash":"b0c269190a426a6324e49a235ce05dea6198b10fbef589ef9307a50d84553cbc","raw_url":"https://app.decimal.ai/s/alirezarezvani-senior-data-scientist/SKILL.md","scorecard_url":"https://app.decimal.ai/skills/alirezarezvani-senior-data-scientist"}