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请教max_val的作用

你好,能否请教下max_val在这里的作用?我看到你这里的实现和paper上略有不同,将网络最后的sig取消了,似乎是Weighted BCE的做法,但是第一项又没有log,第二项和后面又给max_val增加了惩罚度,我不太明白。

非常感谢,

loss = (1 - y) * x + weight*max_val + weight*torch.log(torch.exp(-max_val) + torch.exp(-x - max_val))

split dataset

hello johnson! Can you show the code about how to split the dataset?

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