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Build Polars & Prophet Anomaly Detector

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Linked challenge: Commercial Real Estate BMS Telemetry Fault Detection Pipeline

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Linked challenge
Commercial Real Estate BMS Telemetry Fault Detection Pipeline

Prompt source

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Write a Python script using Polars to load time-series data, run Prophet baseline predictions, and flag timestamps where `observed_kw > baseline + 3 * std_dev`.

Adaptation plan

Keep the source stable, then change the prompt in a predictable order so the next run is easier to evaluate.

Keep stable

Hold the task contract and output shape stable so generated implementations remain comparable.

Tune next

Update libraries, interfaces, and environment assumptions to match the stack you actually run.

Verify after

Test failure handling, edge cases, and any code paths that depend on hidden context or secrets.