Steve Morse has supplied me with an email trail from May 2011 where both he and 
Alexander Beider give their permission to the developer who ported the code 
from php to java to allow the algorithm to be licensed under the Apache 2 
open-source license.

I can post the thread here or submit it privately - your call.

Michael


-----Original Message-----
From: Gary Gregory [mailto:garydgreg...@gmail.com] 
Sent: 11 June 2014 16:39
To: Commons Developers List
Subject: Re: [CODEC] Beider Morse Phonetic Matching Bug and questions

I can but it won't be for s couple of hours...

Gary

<div>-------- Original message --------</div><div>From: Thomas Neidhart 
<thomas.neidh...@gmail.com> </div><div>Date:06/11/2014  11:16  (GMT-05:00) 
</div><div>To: Commons Developers List <dev@commons.apache.org> 
</div><div>Subject: Re: [CODEC] Beider Morse Phonetic Matching Bug and 
questions </div><div> </div>He stated several times that the contributed code 
is a port from php, but it looks like that everybody assumed he was the 
copyright owner of the php code (which he obviously isn't).

It is important to add links (e.g. papers or reference implementations) for 
such code / algorithms, especially in the case of ported code.
Not only to have a clear trace of the license situation but also to be able to 
backport changes/fixes from the original source.

Regarding the re-licensing of the original source:

I hope the authors agree, but usually there is a reason why code is published 
under GPL rather than BSD/MIT/Apache style licenses.
An option would be to explicitly grant the ASF the permission to use their code 
(including the rule files) so that they do not have to re-publish their own 
code.

Regarding a clean-room implementation: I do not think this is feasible, as the 
core of the algorithm are the associated rule files which also do not appear in 
the paper itself.

As the maintainer of codec, do you want to contact the authors about this issue?

Thomas




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