[R] SVD/Eigenvector confusion

Spencer Graves spencer.graves at pdf.com
Sat Feb 28 15:51:32 CET 2004


The documentation ?svd says U and V are orthogonal, i.e., that the 
transpose is the inverse.  hope this helps.  spencer graves

Philip Warner wrote:

> 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.
>
>
>
>
>
>
>>
>
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