Questions tagged [lightgbm]

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L1 & L2 Regularization in Light GBM

This question pertains to L1 & L2 regularization parameters in Light GBM. As per official documentation: reg_alpha (float, optional (default=0.)) – L1 ...
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How is the “base value” of SHAP values calculated?

I'm trying to understand how the base value is calculated. So I used an example from SHAP's github notebook, Census income classification with LightGBM. Right after I trained the lightgbm model, I ...