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class Layer下的get_error函数,我认为_error内容应该是这样的:
neru0=self.units[j]
sum=0
for i in range(len(neru0.weight)):
sum+=neru0.weight[i]*deltas[i]
return sum
因为隐含层权值调整应该是同一个隐含层神经元对所有输出层神经元误差的求和,不是一个输出层神经元对所有隐含层的求和