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Re: [ontolog-forum] Invitation to an Ontolog technical discussion - Met

To: ontolog-forum@xxxxxxxxxxxxxxxx
From: Peter Yim <peter.yim@xxxxxxxx>
Date: Thu, 24 Feb 2005 20:07:47 -0800
Message-id: <421EA493.409@xxxxxxxx>
Our inaugural "technical discussion" session went REALLY well today!    (01)

We had a great turn out, and some of the most enlightening 
discussion.    (02)

Brilliant idea on Kurt's part for proposing this "Scheduled 
Discussion" type, as yet another regular activity for the 
community. And, of course, kudos to Nicolas Rouquette for 
proposing this topic, for laboriously preparing all the 
background material, and suggested question we could collectively 
explore, for moderating the session, and for taking notes of the 
discussion.    (03)

Most importantly, thanks to each and everyone who came and 
participated in the session. They generously shared with the 
community, and the industry at large, their accumulated 
knowledge, the challenges they are facing, and their insight as 
to how some of these challenges may possibly be resolved.    (04)

Please refer to details on our wiki page for this 
"Meta-Ontologies & Ontologies: practical considerations" session at:
http://ontolog.cim3.net/cgi-bin/wiki.pl?OntologDiscussion/MetaOntologies_And_Ontologies    (05)

Details on the audio recording (and, for a limited time, 
telephone playback) is available at: 
http://ontolog.cim3.net/cgi-bin/wiki.pl?OntologDiscussion/MetaOntologies_And_Ontologies#nid0100    (06)

As a reminder, next Thursday's regular conference call session 
(Thu 2005.03.03 10:30am PST / 1:30pm EST) will be devoted to our 
"Annual Strategic and Work Planning". Once again, Kurt Conrad, 
our co-convener, will be facilitating the session. Makes sure you 
come because the outcome of this session will heavily influence 
the direction we will be going, as a community. Please mark your 
calendar, and refer to Kurt earlier post (see: 
regarding this event.    (07)

Regards.  -ppy
--    (08)

Peter Yim wrote Fri, 11 Feb 2005 18:10:41 -0800:
> Thanks, Nicolas.
> ERRATA: The line (7th from the top of the Announcement) about the date 
> of the event should read:
> *When: Thursday, Feb. 24, 2005 *
> -ppy
> --     (09)

> Nicolas F Rouquette wrote Fri, 11 Feb 2005 16:57:18 -0800:
>> We are pleased to invite you to participate to a technical discussion 
>> during our upcoming regular conference call session.
>> Topic: Ontologies & Meta-ontologies: practical considerations
>> When: Thursday,, 2005
>> Start Time: 10:30am PST / 1:30pm EST
>> (World Time: 
>> Session Duration: ~ 2 Hours
>> Dial-in Number: 1-702-851-3330 (Las Vegas, Nevada)
>> Participant Access Code: "686564#" Discussion coordinator: Nicolas 
>> Rouquette
>> Abstract:
>> Using the analogy associating an ontology as an analog to the concept 
>> of a reusable software library with its API, then we can look towards 
>> modern approaches of reusable software development practices as an 
>> inspiration for modular ontology development. The naive approach for 
>> modular, object-oriented software development relies heavily on 
>> subclassing as the mechanism to decouple a reusable module (i.e., the 
>> superclass) with a specific usage of that module in a given 
>> application context (i.e., the subclass that derives from the module's 
>> superclass). There is a growing body of evidence that this approach is 
>> inherently brittle in software engineering. (for more on this topic, 
>> see see Clemens Szyperski's Component Software book, chapters 5 & 6 -- 
>> http://research.microsoft.com/~cszypers/Books/component-software.htm 
>> <http://research.microsoft.com/%7Ecszypers/Books/component-software.htm>)
>> The analogy holds for formal ontologies as well. Here, "formal 
>> ontology" refers to an ontology that has rigorous formalization of 
>> some kind suitable for a reasoning process to make inferences based on 
>> the ontology's axioms, properties and rules. Well-known examples of 
>> formal ontologies include: SUMO, PSL, DOLCE. The OntoClean 
>> <http://ontolog.cim3.net/cgi-bin/wiki.pl?OntoClean> methodology is an 
>> excellent case explaining the pitfalls and limitations of subsumption 
>> for organizing extensible or modular ontologies. This has led to the 
>> notion of "meta-ontology", initially used as an ontology where the 
>> (meta) ontology provides a taxonomy of concepts and properties used 
>> for capturing the meaning of things in the application-specific 
>> ontology using annotations expressed in terms of the meta-ontology. 
>> This idea has been documented in the semantic web best practices group 
>> http://www.w3.org/2001/sw/BestPractices/, e.g., with the 
>> "classes-as-values" pattern 
>> http://www.w3.org/TR/swbp-classes-as-values/ commonly used for 
>> annotation purposes. 
>> Topics:
>> The discussion topics are focused on the practical aspects of ontology 
>> development, maintenance and evolution
>> within considerations of community-based collaborations that depend 
>> heavily on standards of some kind (e.g., OWL, DIG),
>> published methodologies and peer-accessible tools (e.g., open source) 
>> and ontologies without impractical intellectual property restrictions.
>> Within this scope, the topics of the technical discussion will address 
>> practical considerations
>> about the relationship of ontologies & meta-ontologies in the sense of 
>> an "upper" ontology
>> used to make statements about a "lower" ontology in logic (e.g., 
>> OWL-Lite, OWL-DL or OWL-Full).
>> These considerations include, but are not limited to:
>> - Including annotations as part of ontological reasoning
>> - Separating an ontology from independent annotations of that ontology
>> - Using meta-ontologies for describing the refinement relationship of 
>> one ontology as a specialization or a view of another ontology
>> - Guidelines for choosing and using different kinds of 
>> "meta-ontologies" such as universals (e.g., OntoClean) vs. particulars 
>> (e.g., DOLCE)
>> - Using "formal" ontologies (e.g., OntoClean, DOLCE, SUMO) without a 
>> degree in philosophy
>> - other topics suggested by the discussion participants
>> You are encouraged to add your comments, suggestions, questions, 
>> problems, solution and other relevant information on the discussion page:
>> * About the coordinator: *
>> Nicolas Rouquette, Jet Propulsion Laboratory / California Insitute of 
>> Technology.
>> See: http://ontolog.cim3.net/cgi-bin/wiki.pl?NicolasRouquette
>> Please refer to details on the session wiki page at:
>> http://ontolog.cim3.net/cgi-bin/wiki.pl?ConferenceCall_2005_02_24
>> Please point your browser to this wiki page during the session.
>> Shared-screen support (VNC session) will also be available and be
>> started 5 minutes before the call. 
>> <http://ontolog.cim3.net/forum/ontolog-forum/2005-02/msg00007.html#nid015> 
>> Looking forward to having you at the session.
>> Regards,
>> -- Nicolas.
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