[R] SVD/Eigenvector confusion

Philip Warner pjw at rhyme.com.au
Sat Feb 28 15:06:49 CET 2004


At 01:01 AM 29/02/2004, Douglas Bates wrote:
>Is there a reason you are doing the SVD in such a complicated way?
>Why not use the svd function directly?

I am using it to debug other code that is deigned to compute SVDs, so I 
actually want to understand the intermediate steps in constricting the SVD.

Nothing I have seen in the various books & net sources I have read seem to 
indicate that the eigenvectors for U & V have any special requirements 
other than being of unit length, but the experimentation in R seems to 
indicate otherwise, hence my confusion.






>

----------------------------------------------------------------
Philip Warner                    |     __---_____
Albatross Consulting Pty. Ltd.   |----/       -  \
(A.B.N. 75 008 659 498)          |          /(@)   ______---_
Tel: (+61) 0500 83 82 81         |                 _________  \
Fax: (+61) 03 5330 3172          |                 ___________ |
Http://www.rhyme.com.au          |                /           \|
                                  |    --________--
PGP key available upon request,  |  /
and from pgp.mit.edu:11371       |/




More information about the R-help mailing list