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From "Mark R. Diggory" <>
Subject Re: [math] Matrix subMatrix and mean methods
Date Sat, 09 Oct 2004 02:07:10 GMT

Al Chou wrote:
> I agree we should not be releasing Apache versions of the whole Colt library
> (which technically wouldn't even be possible, as the hep.aida.* packages are
> LGPL'd, not under the the new CERN license).  In any case, the question of the
> scope of Commons-Math continually comes up, and the merging in of Colt is yet
> another impetus for discussing it.  If we were to include large portions or all
> of the CERN-licensed code of Colt, we would be in a position to claim a much
> larger scope/charter for the project.  But would we want to?  Some project
> members seem very interested in doing so (and I am certainly guilty of such
> thoughts), but I don't think it necessarily makes sense.  Commons-Math's
> charter is a sound one, and I would not want to alienate/inconvenience users
> whose needs are well met by its current scope and charter (assuming there are
> any such) by increasing it unnecessarily.  A separate project would probably be
> more appropriate if we wanted a larger scope.
> Al


I really agree that "merging" or adding much of the code from Colt can 
result in a project outside the scope of Commons Math. (Not that this 
can't stop us from using portions of it within Commons Math initially, 
which I promote). I really perceive the need for a parent project that 
manages numerical and mathematical codebases that are considered to be 
outside the scope of Commons Math.

I agree that there are concerns with the hep LGPL packages and suspect 
they would not be allowed into Apache due to these concerns.

Mark Diggory
Software Developer
Harvard MIT Data Center

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