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RuleML 2006 registration is now open

From: Michael Kifer <kifer@cs.sunysb.edu>
Date: Tue, 12 Sep 2006 12:54:34 -0400
To: ontoweb-language-sig@cs.man.ac.uk, ontoweb-list@cs.vu.nl, ontoweb-list@www1-c703.uibk.ac.at, public-sws-ig@w3.org, rewerse-all@rewerse.net, www-rdf-interest@w3.org, www-rdf-logic@w3.org, www-rdf-rules@w3.org, www-webont-wg@w3.org, semanticweb@yahoogroups.com
Message-ID: <26938.1158080074@cs.sunysb.edu>



The RuleML 2006 registration is now open. 
http://www.georgiacenter.uga.edu/conferences/2006/Nov/10/rule.phtml
The conference Web site will be updated shortly.

*** The early registration deadline is September 30.

The conference program is at http://2006.ruleml.org/group3.html#3
and the information about tutorials (whose prices is included
in the registration fee) is at http://2006.ruleml.org/group3.html#tutorials

Here is also the information about the keynotes.

THE LIMITS AND POSSIBILITIES FOR COMBINING DESCRIPTION LOGICS AND DATALOG
Riccardo Rosati, Universita di Roma

ABSTRACT:

Description Logics are currently the most used formalisms for building
ontologies, and have been proposed as standard languages for the
specification of ontologies in the Semantic Web.
The problem of adding rules to Description Logics is currently a hot
research topic, due to the interest of Semantic Web applications towards
the integration of rule-based systems with ontologies.
Most of the approaches in this field concern the study of description
logic knowledge bases augmented with rules expressed in
Datalog and its nonmonotonic extensions.
In this talk we present a set of computational results which
identify, from the viewpoint of the expressive abilities of the two
formalisms, minimal combinations of Description Logics and
(nonmonotonic) Datalog in which reasoning is undecidable. Then, based
on the above results, we briefly survey some recent proposals for  
overcoming such expressive limitations.


RULE-BASED INTELLIGENCE IN THE SEMANTIC WEB -or- "I'LL SETTLE FOR A WEB THAT'S JUST NOT SO DUMB!"
Dean Allemang, Top Quadrant 

ABSTRACT

My keynote will give both a retrospective and prospective view of rules and
the semantic web.

The role of rules in the semantic web has been controversial; in the few
short years since the first publication of the Semantic Web stack, Rules
have sometimes been given a central role, at other times a peripheral role,
and sometimes left out completely. Why such variation for an technology
with thirty years of background?

The reason for these differences of opinion stem from different goals for
the inclusion of rules in the Semantic Web stack.  At one extreme are the
Description Logicians who see no need for a general-purpose programming
language in the semantic web stack. At the other extreme are those who want
to build a web infrastructure with the capacity for emergent intelligence.

Our experience with deploying semantic web solutions using OWL alongside
rules suggests a moderate middle path; we don't need or even want our web
infrastructure to exhibit intelligence; that's what our applications are
for.  We just need a consistent and coherent web of information to work
from.  Simply put, we just want our web infrastructure not to be so
dumb. Armed with this understanding, I see the rules in the Semantic Web in
a different light, and see a clear role of rules in the semantic web stack.

This keynote will illustrate these themes with experiences in the field.
Received on Tuesday, 12 September 2006 16:55:03 GMT

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