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Implementation of Statistical Learning Method, Second Edition.《统计学习方法》第二版，算法实现。

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逻辑斯蒂回归中存在一处疑似bug

逻辑斯蒂预测函数中，经过sigmoid函数计算出来的结果，应该是大于0.5为类别1，其余为类别0。sigmoid函数值域恒大于0，所以我认为楼主这个地方存在笔误。

CindyHuang23 avatar CindyHuang23

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非常感谢您的贡献。我已经收到您的邮件回复，谢谢！ 黄海广

fengdu78 avatar fengdu78

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Implementation of Statistical Learning Method, Second Edition.《统计学习方法》第二版，算法实现。

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