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XGBoost gamma (min_split_loss): The Minimum Loss Reduction Gate on Every Split

This story is from 2026-09-02. It is preserved in the archive; the latest stories are on the live feed.

XGBoost gamma (alias min_split_loss ): The Loss-Reduction Gate That Decides If a Split Is Worth It Quick Answer: gamma — also called min_split_loss — is the minimum loss reduction a split must produce before XGBoost will bother making it. Default is 0 , which means "split whenever it helps at all."…

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  1. 2026-09-02 04:30 · DEV Community — AI
    XGBoost gamma (min_split_loss): The Minimum Loss Reduction Gate on Every Split

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