pca
代码说明:
Function to perform Principle Component Analysis over a set of training vectors passed as a concatenated matrix. Usage:- [V,D,M] = pca(X,n) [V,D] = pca(X,aM,n) where:- X = concatenated set of column vectors aM = assume that the mean is aM n = number of principal components to extract (optional) V = ensemble of column eigen-vectors D = vector of eigen-values M = mean of X (optional)
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