From:
ontac-forum-bounces@xxxxxxxxxxxxxx [mailto:ontac-forum-bounces@xxxxxxxxxxxxxx] On Behalf Of Dagobert Soergel
Sent: Monday, October 10, 2005
11:47 PM
To: ONTAC-WG General Discussion
Subject: Re: [ontac-forum] COSMO
(upper model) Technical Kick off
I do not believe that starting from one ontology is a good idea.
No one ontology can serve as a hub. That requires something like the
"lattice" John Sowa talks about. That lattice must be built by
starting from a number of ontologies and successively incorporating more.
On another note, it would be helpful if someone could provide an example of
what the COSMO would look like. This would not need to be comprehensive
or necessarily the best structure, just illustrate the format of what is to be
built.
DS
At 10/10/2005 09:19 PM, you wrote:
Content-class: urn:content-classes:message
Content-Type: multipart/alternative;
boundary="----_=_NextPart_001_01C5CE01.E1F00E89"
Hi folks;
This growing list of support is exciting!
I'm going to exercise the prerogative, which Pat assigned me as COSMO lead, to
dispense with formalities and diving right into our business. To that
end, I’ve included a straw-person process for evolving toward a common
semantic model. This is meant strictly as a starting point for
discussion.
The straw-person is an attempt to incorporate lessons learned from the Standard
Upper Ontology (SUO) effort while offering:
· short
term usable results,
·
respect for and use of existing formal ontological artifacts, and
·
incremental sound formal results.
This approach, I think, includes the key elements that Dr. Sowa asked for in
the SUO framework and provides a staging of effort and results that assumes
modest amount of effort on our parts. It also addresses Pat’s
desire to be inclusive of the European efforts.
The suggesting steps are as follows:
1. Choose
an existing ontology as the initial embodiment of an ontology integration hub
to which other ontologies will be mapped
a.
Agree
on a set of metrics for selection of the ontology integration hub
i. Metrics
must be easily collectable
b.
Agree
on candidates for the selection process
c.
Score
candidate ontologies according to metrics – the high scoring upper
ontology will become the initial ontology integration hub
2.
Release
this ontology as-is as the initial COSMO ontology
3.
Address
key short-falls of the hub ontology
a.
Maintain
a prioritized list of issues
b.
Agree
on resolution as time and interest dictate
4.
Map
the structural axioms (ground atomic formulae) of the remaining candidate
ontologies to the ontology integration hub
a.
This
process proceeds opportunistically as our personal and project time allows
b.
Push
out yearly major releases based on achievement of yearly goals
c.
This
step runs concurrently with step three
5.
Map
the remaining axioms of the remaining candidate ontologies to the ontology
integration hub
a.
As
desired, such free-form axioms can be added in steps three and four
Please excuse the roughness. My other tasks beckon.
I look forward suggestions.
Best!
Eric Peterson
Chief Ontologist
McDonald Bradley Inc.
_________________________________________________________________
Message Archives: http://colab.cim3.net/forum/ontac-forum/
To Post: mailto:ontac-forum@xxxxxxxxxxxxxx
Subscribe/Unsubscribe/Config: http://colab.cim3.net/mailman/listinfo/ontac-forum/
Shared Files: http://colab.cim3.net/file/work/SICoP/ontac/
Community Wiki: http://colab.cim3.net/cgi-bin/wiki.pl?SICoP/OntologyTaxonomyCoordinatingWG
Dagobert Soergel
College of Information Studies
University of Maryland
4105 Hornbake Library
College Park, MD 20742-4345
Office: 301-405-2037 Home:
703-823-2840 Mobile: 703-585-2840
OFax: 301-314-9145 HFax:
703-823-6427
dsoergel@xxxxxxx www.dsoergel.com