Python对CART树代码的实现 Gini.py 模块计算按照某个特征取值分裂后数据集的GINI系数 SplitCatoDataSet.py模块计算对类别性特征进行分裂后的数据集 SplitContinuous.py模块计算对连续性特征进行分类后的数据集 chooseBsetFeature.py模块是按照分裂后Gini系数最小化，选择最优的分裂特征和分裂点 createTree.py模块是创建树
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