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Update numpy_manual_grad.py #44

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Update numpy_manual_grad.py #44

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@HubYZ HubYZ commented Feb 7, 2020

16行求导与目标函数(\min_{a, b} L(a, b) = \sum_{i=1}^n(ax_i + b - y_i)^2)不符。虽然程序可以这样,但是如果这样的相当于变相更改了learning_rate。

16行求导与目标函数(\min_{a, b} L(a, b) = \sum_{i=1}^n(ax_i + b - y_i)^2)不符。虽然程序可以这样,但是如果这样的相当于变相更改了learning_rate。
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