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[ontolog-forum] Ontolog Invited Speaker - Dr. Leo Obrst - Thu 2006.01.12

To: "[ontolog-forum]" <ontolog-forum@xxxxxxxxxxxxxxxx>
From: "Peter P. Yim" <peter.yim@xxxxxxxx>
Date: Mon, 19 Dec 2005 21:47:38 -0800
Message-id: <43A79AFA.4040106@xxxxxxxx>

We are pleased to announce that Dr. Leo Obrst, co-convener of 
Ontolog, and a principal scientist at MITRE, will be presenting 
to the community. His talk is entitled: "*What is an ontology? - 
A Briefing on the Range of Semantic Models*"    (02)

*Conference call-in details*:    (03)

Date: Thursday, Jan. 12, 2006
Start Time: 10:30am PST / 1:30pm EST / 18:30 UTC (World Time:
Session Duration: 2 Hours
Dial-in Number: +1-702-851-3330 (Las Vegas, Nevada, USA)
Participant Access Code: "686564#"
VNC shared-screen support available    (04)

Topic: *What is an ontology? - A Briefing on the Range of 
Semantic Models*    (05)

*Abstract*:    (06)

The Ontology Spectrum describes a range of semantic models of 
increasing expressiveness and complexity: taxonomy, thesaurus, 
conceptual model, and logical theory.    (07)

This presentation initially describes the Ontology Spectrum and 
important distinctions related to semantic models, e.g., the 
distinction among term, concept, and real world referent; the 
distinction among syntax, semantics, and pragmatics; the 
distinction between intension and extension; and de facto 
distinctions that the ISO 11179 standard makes (as do many 
others): data objects, classification objects, terminology 
objects, meaning objects, and the relationships among these.    (08)

The individual semantic model types are then discussed: weak and 
strong taxonomies, thesauri, and weak and strong ontologies 
(conceptual model and logical theory, respectively). Each of 
these are defined, exemplified, and discussed with respect to 
when a more expressive model is needed.    (09)

If time permits, semantic integration and interoperability are 
discussed with respect to the models.    (010)

Finally, a pointer to an expansion of the logical theory portion 
of the Ontology Spectrum is given: the Logic Spectrum, which 
describes the range of less to more expressive logics used for 
ontology and knowledge representation.    (011)

*About the Speakers*:    (012)

*Dr. Leo Obrst* is a principal artificial intelligence scientist 
at MITRE’s (http://www.mitre.org) Center for Innovative Computing 
and Informatics, where he leads the Information Semantics group 
(semantics, ontological engineering, knowledge representation and 
management), and has been involved in projects on Semantic Web 
rule/ontology interaction, context-based semantic 
interoperability, ontology-based knowledge management, conceptual 
information retrieval, metadata and thesaurus construction for 
community knowledge sharing, intelligent agent technology, and 
ontology-based modeling of complex decision-making, He was 
recently Director of Ontological Engineering at VerticalNet.com, 
a department he formed to create ontologies in the product and 
service space to support Business-to-Business e-commerce. Leo's 
PhD is in theoretical linguistics with a concentration in formal 
semantics from the University of Texas-Austin. He has worked over 
20 years in computational linguistics, knowledge representation, 
and in the past nine years in ontological engineering. Leo is a 
member of the Executive Committee of the National Center for 
Ontological Research (NCOR, http://ncor.us/), and the chair of 
the NCOR Technical Committee. He was a member of the W3C Web 
Ontology Working Group (http://www.w3.org/2001/sw/WebOnt/) that 
developed the Web Ontology Language OWL. He is a member of the 
IEEE Standard Upper Ontology working group 
(http://suo.ieee.org/), the Semantic Web Services Initiative 
(http://www.swsi.org/), the Ontolog community 
(http://ontolog.cim3.net, which he co-founded and which focuses 
on the promotion of ontological engineering and semantic 
technologies), and the W3C Rule Interoperability group. He is a 
member of AAAI, ACL, LSA, and ACM. His research interests include 
semantic interoperability/integration, formalization of context 
for ontology mapping and merging, and formal upper ontologies, 
Semantic Web rules, and the application of formal ontology and 
formal semantics to ontological engineering.    (013)

*Refer to details on the session wiki page at*:
http://ontolog.cim3.net/cgi-bin/wiki.pl?ConferenceCall_2006_01_12    (014)

This will be a virtual session over an augmented conference call. 
The session is expected to start with 45 min. ~ 1 Hour 
presentation followed by an extended discussion between the 
participants and the speaker. The entire session will be recorded 
and made available as open content under the prevailing Ontolog 
IPR policy (see: 
http://ontolog.cim3.net/cgi-bin/wiki.pl?WikiHomePage#nid32).    (015)

I look forward to having you at this open session. Please pass 
the announcement along to those who might be interested to join 
us too. All are welcomed. *RSVP* by by emailing me at 
<peter.yim@xxxxxxxx> offline.    (016)

Regards. =ppy    (017)

Peter P. Yim
Co-convener, Ontolog
Message Archives: http://ontolog.cim3.net/forum/ontolog-forum/
Shared Files: http://ontolog.cim3.net/file/
Community Wiki: http://ontolog.cim3.net/wiki/ 
To Post: mailto:ontolog-forum@xxxxxxxxxxxxxxxx    (018)

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