XGBClassifier.feature_importances_函數(shù)，采用weight方式計(jì)算，????????*?'weight':?the?number?of?times?a?feature?is?used?to?split?the?data?across?all?trees.一個(gè)特征用于在所有樹上分割數(shù)據(jù)的次數(shù)。
????????*?'gain':?the?average?gain?across?all?splits?the?feature?is?used?in.使用該特征的所有拆分的平均增益。
????????*?'cover':?the?average?coverage?across?all?splits?the?feature?is?used?in.使用該特征的所有拆分的平均覆蓋率。
????????*?'total_gain':?the?total?gain?across?all?splits?the?feature?is?used?in.該特征在所有分割中使用的總增益。
????????*?'total_cover':?the?total?coverage?across?all?splits?the?feature?is?used?in.使用該特征的所有拆分的總覆蓋率。