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RE: Test ontologies

From: Jim Hendler <hendler@cs.umd.edu>
Date: Fri, 25 Jul 2003 14:48:17 -0400
Message-Id: <p05200f93bb472bc69928@[10.0.1.3]>
To: Ian Horrocks <horrocks@cs.man.ac.uk>
Cc: "Peter Crowther" <Peter.Crowther@melandra.com>, <www-webont-wg@w3.org>

At 2:36 PM +0100 7/25/03, Ian Horrocks wrote:
>On July 25, Jim Hendler writes:
>>  These sorts of things are extremely useful for our testing and
>>  implementation experience (important for CR).  I would like to find a
>>  better way than simply sharing on this list to get these out there --
>>  We could consider adding these as tests in the test suite
>>  (particularly the Galen, as we have the "answers" as well) - or, we
>>  could consider putting these somewhere visible on the web site and
>>  letting people access and use to do testing without a more formal
>>  structure.  I believe the latter might be worth considering - during
>>  the CR period we could do some of this both to help implementors and
>>  to gain momentum for our eventual PR request.  At one point I had
>>  talked about the possibility of creating http://www.w3.org/2003/OWL
>>  as a web site and putting some useful links there (like the RDF site
>>  did) - with the idea that the WG would start this, and then transfer
>>  it to whatever interest group was started in the Semantic Web
>>  Activity at W3C.   If people think this is a good idea, I think we
>>  could do several useful things on such a site -- point to some of the
>>  "idioms" we've discussed, provide some examples like those below, etc.
>>    -JH
>
>Good idea. Developing and maintaining the site could be quite a big
>job though -- do you have a victim (I mean volunteer)?

I'll be looking for one...

>
>>  p.s. Ian, if you haven't already, why don't you submit those to the
>>  http://www.daml.org/ontologies library?  It now accepts OWL.
>
>Good idea. Developing and maintaining the site could be quite a big
>job though -- do you have a victim (I mean volunteer)?

that site is maintained by Mike Dean -- doesn't need a victim, DARPA 
volunteered Mike :->

>
>>
>>
>>
>>  At 1:47 PM +0100 7/25/03, Ian Horrocks wrote:
>>  >On July 25, Peter Crowther writes:
>>  >>
>>  >>  > From: Ian Horrocks [mailto:horrocks@cs.man.ac.uk]
>>  >>  > I converted some "interesting" ontologies to OWL:
>>  >>  >
>>  >>  > http://www.cs.man.ac.uk/~horrocks/OWL/Ontologies/ka.owl
>>  >>  > http://www.cs.man.ac.uk/~horrocks/OWL/Ontologies/galen.owl
>>  >>  > http://www.cs.man.ac.uk/~horrocks/OWL/Ontologies/mad_cows.owl
>>  >>  >
>>  >>  > They have been checked with both validators and seem to be OK. The
>>  >>  > first (ka.owl) is Lite, the other two are DL. "galen.owl" is (part of)
>>  >>  > the well known Galen medical terminology ontology - classifying this
>>  >>  > ontology should prove an interesting challenge for new reasoner
>>  >>  > implementations.
>>  >>
>>  >>  In particular (speaking from experience), there are some
>>  >>  less-than-obvious subsumption relationships in galen.owl - and it
>>  >>  doesn't even use several of the more interesting features of DL.  What
>>  >>  Ian (characteristically) hasn't said is that this fragment of the Galen
>>  >>  KB is something of a benchmark for DL reasoners; the fastest
>>  >>  implementation of a description logic (SHF, not OWL DL) of which I am
>>  >>  aware can calculate the full subsumption hierarchy of galen.owl in a
>>  >>  hair under 10 seconds on a 2GHz Pentium, excluding the file load time.
>>  >>
>>  >>  Ian, do you also have a list of expected subsumptions in galen.owl?  It
>>  >>  would provide a useful target for DL reasoner implementations.
>>  >
>>  >I have attached a dump of the taxonomy of named classes from the
>>  >ontology. It is set of lists of the form:
>>  >
>>  >(class-name direct-supers direct-subs)
>>  >
>>  >where class-name is the name of a class, direct-supers is a list of
>>  >its direct superclasses, and direct-subs is a list of its direct
>>  >subclasses. E.g.:
>>  >
>>  >("BodySpace" ("Space" "BodyStructure") ("PericardialSpace"
>>  >"OperationField" "BodyHole"))
>>  >
>>  >says that the direct superclasses of "BodySpace" are "Space" and
>>  >"BodyStructure", and that the direct subclasses of "BodySpace" are
>>  >"PericardialSpace", "OperationField" and "BodyHole".
>>  >
>>  >Regards, Ian
>>  >
>>  >
>>  >>
>>  >>  		- Peter
>>  >>  --
>>  >>  Peter Crowther, Director, Melandra Limited
>>
>>  --
>>  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)
>>  Univ of Maryland, College Park, MD 20742	  *** 240-277-3388 (Cell)
>>  http://www.cs.umd.edu/users/hendler      *** NOTE CHANGED CELL NUMBER ***

-- 
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)
Univ of Maryland, College Park, MD 20742	  *** 240-277-3388 (Cell)
http://www.cs.umd.edu/users/hendler      *** NOTE CHANGED CELL NUMBER ***
Received on Friday, 25 July 2003 14:48:36 GMT

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