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nn.CrossEntropyLoss_bceloss typeerror: forward() got an unexpected key

bceloss typeerror: forward() got an unexpected keyword argument 'reduction

刚开始报错

TypeError: forward() got an unexpected keyword argument 'reduction'
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查了半天后发现是写错地方了,原来是这么写的

criterion = nn.CrossEntropyLoss(weight=weights)
loss = criterion(x, y, reduction='sum'
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