Andrew Ng 's machine learning lecture note (5)

其他 2018-05-28 11:56:26 阅读次数: 1

Vectorization

Vectorization is a useful method to calculate. It may make the calculation much more faster in Octave/Matlab.So how to make our calculation vectorize.

(1)When we see a add operator ,matrix by matrix should come to our mind.Especially ,For loops come to our mind and we should notice that maybe we should use vectorization.

(2)When we see a formular. We should ask ourselve a question that can this part to be a matrix.

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转载自blog.csdn.net/frostmonarch/article/details/79810175

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