3.3 节最后的损失函数需要sum后才可以调用backward函数 #83

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kevindragon wants to merge 1 commit into ShusenTang:master from kevindragon:master

kevindragon commented Jan 2, 2020

3.3.7 训练模型：损失函数需要sum


          3.3 节最后的损失函数需要sum后才可以调用backward函数

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ShusenTang commented Jan 2, 2020

MSELoss默认会求平均，所以得到的loss已经是个标量。

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