说明:Probabilistic Principal Components Analysis. [VAR, U, LAMBDA] = PPCA(X, PPCA_DIM) computes the principal
% component subspace U of dimension PPCA_DIM using a centred covariance
matrix X. The variable VAR contains the <西晃云> 在 2008-10-13 上传
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说明:Hybrid Monte Carlo sampling.SAMPLES = HMC(F, X, OPTIONS, GRADF) uses a hybrid Monte Carlo
algorithm to sample from the distribution P ~ EXP(-F), where F is the
first argument to HMC. The Markov chain starts at the po <西晃云> 在 2008-10-13 上传
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