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1. trip-eta-predictor trip-eta-predictor Public

   Trip duration prediction from request-time features only — leakage-safe time split, gradient boosting, and a FastAPI endpoint measured at 9.2 ms p50.

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2. demand-forecaster demand-forecaster Public

   Hourly demand forecast a full week ahead with horizon-safe features (enforced by a test) and a rolling-origin backtest over eight weekly origins.

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3. fraud-risk-scorer fraud-risk-scorer Public

   Card fraud risk scoring on 0.17% imbalanced data — PR-AUC 0.75, alert threshold chosen by money not by 0.5, drift monitored with PSI.

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4. docs-rag-service docs-rag-service Public

   RAG with verifiable citations and measured refusal — retrieval scored separately (TF-IDF beats embeddings here), citations validated against chunks actually retrieved.

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5. job-extractor job-extractor Public

   LLM extraction of validated job-advert records — pydantic schema as contract, one repair round on validation errors, regex + silence baselines, per-field scoring.

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6. sql-agent sql-agent Public

   Tool-calling agent that answers database questions with safe SQL — read-only connection + authorizer, legible guard refusals, execution-accuracy eval (0.941).

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