I fixed the bug, it was not in Kronecker multiplication but in Schur's Complement method, which I had originally used for the LU Decomposition but later implemented a faster algorithm (from Cormen's MIT book on algorithms). The code works now (version 27), but it needs cleaning. It also needs faster normal multiplication algorithm, cholesky decomp,, eigenvalue finding and a few other basic things. I released the code as MIT, and it is accesible through squeaksource now that it is up again. Cheers

r.

"Joseph T. Bore" jbore@tjtech.com 30/09/2008 20:55

To Ramiro Diaz Trepat ramiro@diaztrepat.name cc

Subject Re: [squeak-dev] representing matrix as two dimensional array in Slang

oh ok, thanks.

jb

On Tue, 30 Sep 2008, Ramiro Diaz Trepat wrote:

Sorry ! I meant squeaksource.com Just look up Numerics in the projects section. I still have to fix the kronecker multiplication, should be done soon. Cheers

r.

On Tue, Sep 30, 2008 at 3:46 AM, Joseph T. Bore jbore@tjtech.com

wrote:

...

maybe im blind, but i just looked on squeak map and i dont see that, i

also

...

looked on map.squeak.org via the browser and i also dont see it there. can you send a link to the exact location? jb

On Sep 29, 2008, at 5:38 PM, Ramiro Diaz Trepat wrote:

I have created a package called Numerics in squeakmap that adds has a Vector and Matrix class that can solve LU decompositions, linear

equations,

...

determinants, normal multiplication, kronecker multiplication and a few other things. It has test cases with examples. It is quite green still but test cases pass. Although right now I am refactoring a few things and I broke the kronecker multiplication, but

I

...

should fix it soon. I wanted to add Cholesky decomposition and eigenvalue finding to it, if

you

...

want to join in, you are more than welcome. Cheers

r

On Mon, Sep 29, 2008 at 6:43 PM, Ang Beepeng beepeng86@yahoo.com

wrote:

...

...

I want to create a plugin on Gaussian elimination on matrix. The

examples

...

...

of gaussian elimination in C code are mostly taking in the matrix as two dimensional array. How can I write it in Slang? How to represent 2 dimensional float matrix in Slang? Are there any examples in Slang?

Thanks for help. Ang Beepeng -- View this message in context:

http://www.nabble.com/representing-matrix-as-two-dimensional-array-in-Slang-...

...

...

Sent from the Squeak - Dev mailing list archive at Nabble.com.

-- jbore@tjtech.com

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