关于第一章的：L2regularization

[alexxiecan]

你好，作者，请问下第一张关于L2 reg的代码，您为什么使用的是L2: 0.5 * regularization * np.square(p) 而没有对平方求和？望得到您的答复，此致！

[nicholaslsq]

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