RE: [ontac-forum] Upper ontology / common semantic model

[Dagobert Soergel <dsoergel@xxxxxxx>]

The steps I outlined could certainly applied to any subset of upper level
ontologies.  We start with those that are of particular relevance to
Federal government.

There is also a question of whether we should focus on

• entity types (called semantic types in the UMLS-SN)
• relationship types
• subject fields/disciplines and their upper subdivisions or facets

I do not mean to imply that these are mutually exclusive, they are
just pragmatic divisions.  The CYC upper ontology mixes all
three.

Having directed a dissertation applying the UMLS-SN, I can only agree
with Barry.  My student made a number of suggestions.

DS


At 10/9/2005 07:06 PM, Barry Smith wrote:
> As Olivier will confirm, there
> are many things wrong with the UMLS-SN, which is why an effort is
> currently on-going to rebuild it.
> BS
>
> At 06:30 PM 10/9/2005, Cassidy, Patrick J. wrote:
> > Dagobert,
> >    That looks like an excellent summary of a methodology to
> > find
> > commonality among the existing UOs.
> >    I mentioned in a previous note that I though that it might
> > be
> > helpful to focus initially on that part of existing UOs required to
> > formalize and relate several existing Knowledge Classifications such
> > as
> > the UMLS-SN, FEA-RMO top level, and DoD Core Taxonomy top level. 
> > Do
> > you view such a focus as consistent with the overall plan you
> > describe?
> >
> > Pat
> >
> >
> > Patrick Cassidy
> > MITRE Corporation
> > 260 Industrial Way
> > Eatontown, NJ 07724
> > Mail Stop: MNJE
> > Phone: 732-578-6340
> > Cell: 908-565-4053
> > Fax: 732-578-6012
> > Email: pcassidy@xxxxxxxxx
> >
> >
> > -----Original Message-----
> > From: ontac-forum-bounces@xxxxxxxxxxxxxx
> > [
> > mailto:ontac-forum-bounces@xxxxxxxxxxxxxx] On Behalf Of Dagobert
> > Soergel
> > Sent: Sunday, October 09, 2005 3:19 PM
> > To: ontac-forum@xxxxxxxxxxxxxx
> > Subject: [ontac-forum] Upper ontology / common semantic model
> >
> > I am separating out this part of the thread.
> > I apologize if some of this is obvious.  It is often "hard
> > to
> > understand what is understood".
> >
> > This is a suggested plan of work for the upper ontology subgroup
> >
> > 1       Collect suggested upper
> > ontologies
> >
> > 2       Compare and determine
> > differences
> > 2.1            
> > In elements (presence / absence and, more difficult,
> > definition)
> > 2.2            
> > in relationships
> >
> > 3       Try to resolve differences,
> > creating a superstructure that
> > incorporates
> >          the non-contradictory
> > parts of various schemes
> > 3.1            
> > By adding elements
> > 3.2            
> > By adding relationships
> >
> > 4       Articulate the remaining
> > differences so that they are clearly
> > understood
> >
> > In addition, the subgroup should deal with ontologies that can be
> > reused in many contexts, such as an ontology of time concepts.
> >
> > My reworking of the WordNet top level (attached) may be useful in
> > this
> > context.
> >
> > DS
> >
> >
> > 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
> >
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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

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