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Re: open source software for CART and Principal Component Analysis
From: |
Matthias Kirschner |
Subject: |
Re: open source software for CART and Principal Component Analysis |
Date: |
Mon, 20 Dec 2004 19:45:56 +0100 |
User-agent: |
Mutt/1.5.6+20040907i |
* Leo <demianheart@hotmail.com> [2004-12-20 17:42:55 +0000]:
> I need open source software, or however a free software (i would download
> and use it without pay!), for manage data with CART or Principal Component
> Analysis. Tipically Matlab is the best software solution, but it isn't free!
> GNU Octave is free but not more powerful! Then, please, could you help me?
Please read [1]:
"Free software" is a matter of liberty, not price. To understand the
concept, you should think of "free" as in "free speech", not as in
"free beer".
Free software is a matter of the users' freedom to run, copy,
distribute, study, change and improve the software. More precisely, it
refers to four kinds of freedom, for the users of the software:
* The freedom to run the program, for any purpose (freedom 0).
* The freedom to study how the program works, and adapt it to
your needs (freedom 1). Access to the source code is a
precondition for this.
* The freedom to redistribute copies so you can help your
neighbor (freedom 2).
* The freedom to improve the program, and release your
improvements to the public, so that the whole
community benefits (freedom 3). Access to the source
code is a precondition for this.
Best wishes,
Matze
[1] http://www.fsf.org/philosophy/free-sw.html