JAMA defunct and replaced by Apache Commons-Math?

[Hassan Siddiqui]

I understand from the following javadoc:

http://commons.apache.org/math/api-2.0/org/apache/commons/math/linear/LUDecomposition.html

that JAMA is now defunct.

Can you confirm this? Is Commons-Math a complete replacement for JAMA now?


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[Phil Steitz]

Hassan Siddiqui wrote:
> I understand from the following javadoc:
>
> http://commons.apache.org/math/api-2.0/org/apache/commons/math/linear/LUDecomposition.html
>
>
> that JAMA is now defunct.
>
> Can you confirm this? Is Commons-Math a complete replacement for JAMA now?

To our knowledge, JAMA is not under active development at this time.
 The word "defunct" is perhaps a bit strong.

Commons-math is not a complete replacement for JAMA.

Phil

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[Ted Dunning]

But it adds considerable functionality that JAMA did not have and is under
active development.

JAMA was a proof of concept for various API structuring ideas.  Commons math
is about producing production quality software.  JAMA was a one-time project
and is long since frozen (although it is public domain so you can fork it to
your heart's content).  Commons math is an ongoing, vital project that you
can influence and contribute to.

On Mon, Oct 19, 2009 at 3:24 AM, Phil Steitz <[hidden email]> wrote:

> Commons-math is not a complete replacement for JAMA.




--
Ted Dunning, CTO
DeepDyve

[Luc Maisonobe]

Ted Dunning a écrit :

> But it adds considerable functionality that JAMA did not have and is under
> active development.
>
> JAMA was a proof of concept for various API structuring ideas.  Commons math
> is about producing production quality software.  JAMA was a one-time project
> and is long since frozen (although it is public domain so you can fork it to
> your heart's content).  Commons math is an ongoing, vital project that you
> can influence and contribute to.
>
> On Mon, Oct 19, 2009 at 3:24 AM, Phil Steitz <[hidden email]> wrote:
>
>> Commons-math is not a complete replacement for JAMA.

The one thing commons-math does not provide yet is eigen decomposition
for non symetrical matrices (it provides this decomposition for
symetrical matrices though).

The algorithms that are in both commons-math and JAMA (LU decomposition,
QR decomposition, SVD, matrix operations ...) are often much faster in
commons-math than in JAMA.

Commons-math also provides many features JAMA did not provide.

Luc

>
>
>
>


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