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week 4
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2017-09-08 23:02:14
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1.non-linear hypothesis 利用我们之前接触到的linear regression或者是logistic regression处理数据时,有一个明显的缺点,就是当特征x太多时 ,计算量会非常大,以下图为例: ![](https://leanote.com/api/file/getImage?fileId=5987df08ab64411d1d000913) 当只有$x_1和x_
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