To get the best out of the opportunity, please feel free to post
questions you may have for Dr. Obrst, or things you would like to
see him cover in the Part-2 session on this forum, or directly to
between now and next Thursday. (01)
Peter P. Yim wrote Fri, 13 Jan 2006 08:57:06 -0800:
> Honestly, we were a little pressed for time toward the end of the
> session yesterday. There were a few more slides that Leo could have
> covered, and I'm sure some of the members of the audience didn't get
> their chance to ask questions. I have, since, received requests for a
> follow-up session.
> *Good News*! - I have got this worked out, and Dr. Obrst has graciously
> agreed to set aside 1.5 hours next Thursday (2006.01.19) as a Part-2
> session of this talk. The session will start at the usual time. Call
> details as follows:
> Date: Thursday, Jan. 19, 2006
> Start Time: 10:30am PST / 1:30pm EST / 18:30 UTC (World Time:
> Session Duration: 1.5 Hours
> Dial-in Number: +1-702-851-3330 (Las Vegas, Nevada, USA)
> Participant Access Code: "686564#"
> VNC shared-screen support available
> Please refer to other session details on our wiki session page (same
> page as before) at:
> [note especially details pertaining to the Part-2 session]
> I suggest we'll just jump straight into the talk without much
> introductions at the front for this upcoming session. That would give us
> more quality time for Dr. Obrst's material, and allow us more time for
> Q&A's and discussion after he finishes on the prepared content.
> RSVP to the undersigned at <peter.yim@xxxxxxxx> offline, so that I can
> arrange enough conferencing resources for the session. I shall look
> forward to having you at this Part-2 session.
> Regards. =ppy
> P.S. If you missed the first part of the talk, you may consider catching
> up by going over the audio archive of the Part-1 session which is now
> available (refer to details in my previous message.) =ppy
> -- (03)
> Peter P. Yim wrote Fri, 13 Jan 2006 00:44:34 -0800:
>> We had a huge crowd and a most educational session on Jan. 12, 2006
>> with Dr. Leo Obrst, principal artificial intelligence scientist at
>> Mitre and co-convener of Ontolog, who presented to our community on:
>> "What is an ontology? - A Briefing on the Range of Semantic Models".
>> With Dr. Obrst's clear explanation and the set of meticulously
>> prepared slides, I'm sure a lot of us can now discern between weak and
>> strong semantics. We are in a position now to better understand the
>> differences between taxonomies, thesauri, weak ontologies (conceptual
>> models) and strong ontologies (logical theories), as well as when and
>> why would we need them. As discussed during the session, this work
>> (slides and audio recording of the briefing) will provide our
>> community with the shared understanding of what these notions entail,
>> and something we can always refer back to.
>> Thank you very much, Leo, for sharing with us your work and insight.
>> And, as always, appreciations to all who came, participated and helped
>> contribute to yet another great Ontolog session.
>> The digitized (mp3) audio recording of the entire session has
>> now been posted. That will be archived in our knowledge
>> repository for reference and download by anyone interested. See
>> details at:
>> Dr. Obrst's input today adds true value to this collective
>> knowledge and intelligence that our community is building.
>> Thanks & regards. =ppy
>> P.S. Our next couple of invited speaker events have already been lined
>> Next month, on Thursday, Feb. 2, 2006, world renowned ontologist, Dr.
>> Nicola Guarino from the Laboratory for Applied Ontology in Italy, will
>> be giving us a talk focused around DOLCE - a Descriptive Ontology for
>> Linguistic and Cognitive Engineering - one of the leading Upper
>> Ontologies available.
>> The following month, on Thursday, March 2, 2006, Professor Dr. Asuman
>> Dogac from the Middle East Technical University (METU) in Turkey will
>> be presenting her work to the community in a talk entitled:
>> "Exploiting ebXML Registry Semantics in the eHealth Domain."
>> Mark your calendars so that you won't missed these great upcoming
>> events. =ppy
>> -- (04)
> Peter P. Yim wrote Mon, 09 Jan 2006 14:52:45 -0800:
> > *REMINDER*
> > Happy New Year, everyone!
> > This long anticipated session on "What is an ontology?" is coming up
> in a few days. Whether you are just trying to find out for the first
> time, or if you are a seasoned software professional, system designer,
> librarian, knowledge engineer, taxonomist or ontologist, there are good
> reasons why you shouldn't miss the session!
> > RSVP (if you haven't already) ... we're looking forward to having you
> at the session.
> > Regards. =ppy
> > -- (05)
> > Peter P. Yim wrote Mon, 19 Dec 2005 21:47:38 -0800:
> >> *ANNOUNCEMENT*
> >> 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*"
> >> *Conference call-in details*:
> >> 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
> >> Topic: *What is an ontology? - A Briefing on the Range of Semantic
> >> *Abstract*:
> >> The Ontology Spectrum describes a range of semantic models of
> increasing expressiveness and complexity: taxonomy, thesaurus,
> conceptual model, and logical theory.
> >> 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.
> >> 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.
> >> If time permits, semantic integration and interoperability are
> discussed with respect to the models.
> >> 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
> >> *About the Speakers*:
> >> *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.
> >> *Refer to details on the session wiki page at*:
> >> http://ontolog.cim3.net/cgi-bin/wiki.pl?ConferenceCall_2006_01_12
> >> 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:
> >> 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.
> >> Regards. =ppy
> >> Peter P. Yim
> >> Co-convener, Ontolog
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