Conf: RuleML 2006 early registration September 30th (Reminder)

[Thierry Hamon]

Date: Tue, 26 Sep 2006 16:24:01 +0200
From: Jos de Bruijn <jos.debruijn at deri.org>
Message-Id: <1159280641.10680.2.camel at localhost.localdomain>
X-url: http://www.georgiacenter.uga.edu/conferences/2006/Nov/10/rule.phtml
X-url: http://2006.ruleml.org/group3.html#3
X-url: http://2006.ruleml.org/group3.html#tutorials


*** Reminder: RuleML 2006 early registration deadline is September 30.
Registration link:
http://www.georgiacenter.uga.edu/conferences/2006/Nov/10/rule.phtml


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.


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