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SKAttention似乎有点小问题

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单运行./model/attention/SKAttention.py时会报错，RuntimeError: Can't call numpy() on Tensor that requires grad. Use tensor.detach().numpy() instead. 目测应该是第40行U=sum(conv_outs)中调用sum时需要将tensor转numpy，而被转tensor参与梯度计算不能直接转？