how to adjust unbalanced data？
how to adjust unbalanced data？
发布时间：2025-09-09 05:04:30
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答案：
关于sklearn下class_weight参数的一点源码阅读与测试
上述可以看出对于每个样本，计算的损失函数乘上对应的sample_weight来计算最终的损失。这样计算而来的损失函数不会因为样本不平衡而被“推向”样本量偏少的类别中。
class_weight以及sample_weight并没有进行不平衡数据的处理，比如，上下采样。详细参见SMOTE EasyEnsemble等。
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