OK, thanks.
One wrinkle that I didn't anticipate is that the legal department at work
didn't give me the automatic yes that I expected. I did develop this in my
own time over a couple of weekends, and it's not in any way related to them,
but if legal is of the mentality that everything gets rejec
Hi Tyler,
Thanks for your interest in contributing to Commons Math. In general
(though see disclaimers below), taking "textbook algorithms" and
implementing them with original code is fine, though often textbook
algorithms don't really work too well in practical applications, and
[math] is real
This is why the householder transformation was so simple. There are better
ones, but I thought I'd play it safe and implement it directly from the
textbook definition to not run afoul of any copyrights. All of the code came
from the text of textbooks, I didn't take any code from anywhere.
How sho
On Mon, 2006-07-17 at 06:50 +0200, Luc Maisonobe wrote:
> Tyler Ward wrote :
> > Hi guys, I haven't sent mail to this list before. I've noticed that
> > apache
> > doesn't have an SVD algorithm, so I put one together. Are you guys
> > interested?
>
> By the way, could you add [math] as a marker i
Tyler Ward wrote :
Hi guys, I haven't sent mail to this list before. I've noticed that
apache
doesn't have an SVD algorithm, so I put one together. Are you guys
interested?
By the way, could you add [math] as a marker in your subject for this
list (I forgot to fix it in my previous mail, sorr
Tyler Ward wrote :
Hi guys, I haven't sent mail to this list before. I've noticed that apache
doesn't have an SVD algorithm, so I put one together. Are you guys
interested?
As far as I am concerned, yes.
More specifically, the householder transformation is absolutely naieve,
Perhaps we shou
Hi guys, I haven't sent mail to this list before. I've noticed that apache
doesn't have an SVD algorithm, so I put one together. Are you guys
interested?
This is entirely of my creation, I didn't copy or examine code from
anywhere. I wrote all the transformations by hand just browsing through
lin
Hi Phil and Al,
Thanks for the advise. I have digged through it, and the code seems fine
with many matrices.
Kim
--
http://www.kimvdlinde.com
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Other than published examples or examples worked by hand, one thing
that I have found useful is to compute target values using R (which I
think does SVD), mathematica or other packages. That is obviously not
infallible, but often brings bugs to the surface. Sometimes you can
also use known analyt
Never having used or even learned anything in detail about SVD, my only
suggestion is that equations 2.6.1 and 2.6.4 in
http://library.lanl.gov/numerical/bookcpdf/c2-6.pdf are, as the text therein
says, the only defining requirements for the SVD of any matrix. You could, as
the text says, verify t
Hi All,
In the past, I have plugged the JAMA SVD class to the matrix class of
commons.math. I do now want to run a test in it, so, the questio
becomes, does someone has a known test case for me?
Cheers,
Kim
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http://www.kimvdlinde.com
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