Message-ID: <4040AAF4.8090300@pdf.com>
Date: 2004-02-28T14:51:32Z
From: Spencer Graves
Subject: SVD/Eigenvector confusion
In-Reply-To: <6.0.0.22.0.20040229010300.0848a578@203.8.195.10>
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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