Re: Java Class for SVD of large sparse matrix (say 50,000 x 50,000) ?

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From: David Johnson
Date: Sun, 20 Jun 2004 07:26

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Jim,

I might be wrong, but isn't that part of  MTJ, rather than SMT?  I'll have
to look at it a bit more closely next week.

Dave.
"Jim Sculley" <niceguyj@wisdomteeth.comcast.net> wrote in message
news:qMGdnU5bSNiYeEndRVn-gw@comcast.com...
> David Johnson wrote:
> > Hello,
> >
> > What I am after is a GNU or similarly licensed class that will perform
> > Singular Value Decomposition on fairly large matrices (I'm experimenting
> > with Latent Semantic Analysis).
> >
> > The Matrix Toolkit for Java (MTJ) http://www.math.uib.no/~bjornoh/mtj/
has a
> > SVD function, but that only seems to work up to about 1000 x 1000
elements
> > (with ~1GB RAM).  The Sparse Matrix Toolkit (SMT)
> > http://www.math.uib.no/~bjornoh/mtj/smt/ sounds promising, but hasn't
got
> > SVD as a method.
>
>
> Actually, it does.
>
> http://www.mi.uib.no/~bjornoh/mtj/doc/mt/fact/SingularvalueComputer.html
>
> Jim S.
> -- 
> Remove my extraneous mandibular appendages to reply via email.

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From: "David Johnson" <someone@microsoft.com>
Newsgroups: comp.lang.java.help,aus.mathematics
Subject: Re: Java Class for SVD of large sparse matrix (say 50,000 x 50,000) ?
Date: Sun, 20 Jun 2004 17:26:36 +1000
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