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Use case categories - 1st cut (action due by Thurs)

From: Jim Hendler <hendler@cs.umd.edu>
Date: Tue, 4 Dec 2001 23:40:15 -0500
Message-Id: <p05100311b83355714560@[]>
To: webont <www-webont-wg@w3.org>

  I have taken a stab at a categorization of the use cases - I find 3 
natural categories, 1 almost a natural category (two ideas that might 
be related, but don't fit totally) and only a couple of loose ends I 
could not figure out exactly where to fit.  In addition, some 
technical issues that might cross cut seem to come out.  There are 
listed below.
  I would be happy if we could end up with 4 total groups -- winnowing 
my 4 categories down to 3, and developing the "cross cutting 
technologies" to become more focused (to be the base for the sort of 
"requirements" Peter Patel-Schneider argued for earlier)

  Please discuss and let's see if we can resolve by Thurs.
   Jim H

[Note WOL is only an acronym for Web Ontology Language at this point- 
does not represent commitment to this name]

Use cases - rough categorization proposal:

1) Web Services
WSDL is only a starting place, seems to stress interconnection, but 
not content.  WOL has potential to be used for better advertising 
(via hierarchy/classification), for connecting advertisements to 
ontologies, and for exploring the compositionality of services.

2) Archives/CatalogsLarge data (or image) sets/web site management
All of these areas focus on the use of ontologies in the management 
of large scale information sources.  Includes need for matching, 
classification, default reasoning.  "Traditional" metadata (i.e. 
document markup) would fall in this category.

3) Content Interoperability (a/k/a/ agent markup)
RDF has advantage over XML in allowing easy merging of content found 
on different sites/resources, and the use of the combined sources. 
Use cases include linking of databases (DB schemas), coupling data to 
pages, linking instance data to ontologies.  Also allows linking of 
ontology to ontology for mapping of vocabulary, etc.

4) Adaptation of content to user/device (real time/sensors?)
Use of ontologies to help determine what info to show to whom when, 
or to be the information shown (i.e.  in PalmDAML the user can browse 
the semantics separate from the source pages).  The real-time and 
embedded sensor area seems to fit in best here - but I admit I'm 
pushing a little.

Loose ends:
  open hypermedia

Technical issues that could be address in some or all
  ontology-based search
  domain-mapping/ontology linking (how much is commited to by a link)
  ontology querying
  rapid creation of large ontologies ?

Professor James Hendler				  hendler@cs.umd.edu
Director, Semantic Web and Agent Technologies	  301-405-2696
Maryland Information and Network Dynamics Lab.	  301-405-6707 (Fax)
AV Williams Building, Univ of Maryland		  College Park, MD 20742
Received on Tuesday, 4 December 2001 23:40:16 UTC

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