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Re: [ontolog-forum] SUMO updates

To: "[ontolog-forum] " <ontolog-forum@xxxxxxxxxxxxxxxx>
From: Adam Pease <adampease@xxxxxxxxxxxxx>
Date: Thu, 06 Jan 2005 09:22:41 -0800
Message-id: <>
   Sorry for the delay.  Somehow your message did not appear in my inbox 
until recently.
   There is a license for SUMO.  It's at the top of the file, and is 
explicit, not implied.  As explained to my by the IEEE lawyer, the only 
restrictions it afford to SUMO are that you can take SUMO and say you wrote 
it, and you can't alter it and say it's the SUMO standard.  You are however 
free to alter it, redistribute it, embed it in software, sell that software 
   My understanding of how GPL applies to ontologies is that only 
modifications (derivative works) to those ontologies would inherit the GPL 
license.  Ontologies can be considered "data" and software that uses them 
can be proprietary.    (01)

Adam    (02)

At 10:20 AM 12/18/2004, Jack Park wrote:
>Could you please provide some clarifications on the licenses involved. The 
>site says:
>SUMO is free and owned by the IEEE. The ontologies that extend SUMO are 
>available under the GPL license
>First, does "free" for the SUMO mean there is no license whatsoever? Is 
>there an implied "license to use" involved?
>Second, doesn't GPL on the extensions imply that all software that uses 
>those also fall under GPL?
>Adam Pease wrote:
>>   I've recently completed a round of updates to SUMO, MILO and the 
>> domain ontologies.  This includes a number of typo fixes in response to 
>> bug reports from many users, a bit of reorganization to move concepts to 
>> more appropriate files, and various fixes to remove duplication and 
>> disconnects among the various ontologies.  All the latest content is 
>> available from <http://www.ontologyportal.org>.  More details on the 
>> updates are given in the CVS log for each ontology.
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>mailto:ontolog-forum@xxxxxxxxxxxxxxxx    (03)

Adam Pease
http://www.ontologyportal.org - Free ontologies and tools    (04)

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