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Train Prophet Model on Qatar Construction Prices
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Linked challenge: Qatar Construction Material Cost Forecasting Engine
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Linked challenge
Qatar Construction Material Cost Forecasting Engine
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Original prompt text with formatting preserved for inspection.
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Write a Python script using `pandas` and `prophet`. Fit a `Prophet()` model on historical rebar prices, make a 180-day future dataframe, and calculate MAPE on validation data.
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.