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From Wolfgang Hoschek <>
Subject Re: [math] Matrix subMatrix and mean methods
Date Tue, 05 Oct 2004 19:12:15 GMT
Hi, let me briefly introduce myself. I'm the author of Colt which has  
the BSD-style license you referred to below.

I encourage you to take code or ideas from Colt, as you see fit, and as  
you see compatible with Apache licensing policy.
I wrote this code some six years ago while working at CERN, so the  
copyright is not with me personally, but with CERN  
( I have left CERN some years ago to work for a Bay  
Area research lab, so I consider it unlikely that the license could be  
changed, and I'm not in a position to help change the license, even  
though I would support such a license change. In my judgement, you will  
have to decide if the current license works for you, or not. If it  
works for you, you are most welcome.

As far as Jama is concerned, the code is a straightforward adaption of  
the original Jama code, as explained on 
You could contact the Jama authors for licensing issues.

Hope this helps,

> I am posting this to the Licensing list as well because it is very  
> unclear how to proceed and we dearly need their advice on this  
> subject. Licensing, the issue has to do with policy for adding code  
> from a external project, which the author has approved our usage of  
> via email.
> /
> We would like to add certain fragments of the "Colt" API which is  
> licensed under a BSD style licensing.
> How do we properly proceed?
> Al Chou wrote:
>> Colt contains a port of much of JAMA, IIRC, and as Wolfgang posted  
>> not too long
>> ago, Colt's new license is much more compatible with the Apache  
>> license.  I'm
>> not sure if it's sufficiently compatible for us to start merging in  
>> code,
>> though.
>> Al
> I think we should clarify our own position given his approval.
> 1.) I think the appropriate path is to discuss with Wolfgang and our  
> Licensing list what is required to meet any ASF requirements that may  
> exist. Licensing needs to clarify how we should proceed.
> The challenge is what to do about any ASF polices concerning licensing  
> adjustments, for which none of us are "knowledgeable".
> 2.) I think this is a exception to our policy of acknowledging  
> authorship in the project documentation and not in the code. In this  
> case I think we should attempt to maintain significant references to  
> his project as the original source of any codebase additions added to  
> the Commons math API.
> 3.) If ASF requires more stringent approval in writing, we request  
> more formally to have Wolfgang fax in some sort of donation form to  
> ASF.
> -Mark
> -- 
> Mark Diggory
> Software Developer
> Harvard MIT Data Center

Wolfgang Hoschek                  |   email:
Distributed Systems Department    |   phone: (415)-533-7610
Berkeley Laboratory               |

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