In sci.stat.math Dr. V. Ravi <[EMAIL PROTECTED]> wrote: > Hi everyone:
> I am new to this group. I am working on a bioinformatics problem. I > need to perform PCA on a matrix of order 150x11000 - yes, the number > of variables far exceeds the number of samples. I tried using MATLAB, > which gives an error > maybe because of the size of the matrix. SPSS 11.0 does not contain > an explicit module for PCA. > Pls tell me how to go about it. It is urgent! > Thanks You may want to take a look at the paper "Complementary Candid Incremental Principal Component Analysis" that will appear in IEEE Pattern Analysis and Machine Intelligence. You can find it at http://www.egr.msu.edu/~zhangyil/papers/tpami2002.pdf It describes an incremental method to obtain the principal vectors, particularly for very high dimensional data. . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
