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您好,最近阅读了您的这个仓库,受益非浅,非常感谢。 但是我对您在nn/activations.py 中的Tanh的反向传播函数有点疑惑。 def tanh_backward(next_dz): """ tanh激活反向过程 :param next_dz: :return: """ return 1 - np.square(np.tanh(next_dz)) 根据反向传播的求导,我觉得Tanh的反向函数应该是: def tanh_backward(next_dz, z): return next_dz*(1 - np.square(np.tanh(z))) 谢谢您的指教。