how to reduce dimensionality of features by usin pca?

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mona
mona 2017-3-3
回答： David J. Mack 2017-3-3
Now I can apply PCA in Matlab by using [coeff, score, latent, ~, explained] = pca(X);and size of X 20*20, And now my confusion begins. Should I take the first column of coeff or of score or other to get reconstructed features by pca?

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David J. Mack
David J. Mack 2017-3-3
To get a simply answer (whitout really adressing the problem), have a look as pcares
Greetings, David

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