How does cost_complexity_pruning_path in sklearn calculate effective alphas when pruning a decision tree?

Asked Oct 01 '21 at 00:24

Active Oct 01 '21 at 00:24

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I know when pruing DecisionTreeRegressor, we can leverage cost_complexity_pruning_path method to get a list of effective alphas. But how this method calculates the alphas?

asked Oct 01 '21 at 00:24

Alice Wang

How does cost_complexity_pruning_path in sklearn calculate effective alphas when pruning a decision tree?

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