From: Enrico Franconi
Subject: KRDB'99 (Knowledge Representation meets Databases)
Date: 
Message-ID: <83hfv2aeya.fsf@gramsci.cs.man.ac.uk>
		    6th International Workshop on 
	       KNOWLEDGE REPRESENTATION MEETS DATABASES
			      (KRDB'99)

		Linkoeping (Sweden), July 29-30, 1999

			Affiliate event with:
	DL'99 - International Workshop on  Description Logics
	       (Linkoeping,  July 30 - August 1, 1999) 
 IJCAI'99 - International Joint Conference on Artificial Intelligence 
		    (Stockholm, August 3-6, 1999)

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CALL FOR PAPERS

The 6th International KRDB Workshop continues the tradition of annual
international workshops devoted to facilitate cross-fertilization
between the fields of knowledge representation (KR) and databases
(DB), started in 1994. Previous workshops were held in conjunction
with various AI or databases conferences: KRDB'94, Saarbruecken,
Germany; KRDB'95, Bielefeld, Germany; KRDB'96, Budapest, Hungary (in
conjunction with ECAI'96); KRDB'97, Athens, Greece (in conjunction
with VLDB'97); KRDB'98, Seattle, WA, USA (in conjunction with
SIGMOD/PODS'98).

KRDB'99 will be held in Linkoeping (Sweden) July 29-30 as affiliate
event with the International Joint Conference on Artificial
Intelligence (IJCAI'99, Stockholm, 3-6 August 1999), and the
International Workshop on Description Logics (DL'99 Linkoeping, July
30 - August 1 1999).  KRDB'99 will have a joint session with DL'99.

KRDB is a forum for exchanging ideas between DB and KR
researchers. Equally important is the KRDB tradition of stimulating
the discussion between researchers and practitioners.  The number of
participants in the workshop will be restricted.  Potential
participants are encouraged to submit a position paper (see SUBMISSION
OF PAPERS below) that describes their current research and possibly
previous accomplishments related to the workshop topic. Authors of
papers accepted for the proceedings will have the opportunity to
present their opinions by talks.  Other contributions will stimulate
the open discussion planned in the workshop schedule.

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SCOPE

Databases and knowledge bases are both used to model application
domains and to facilitate access to stored information.  Research in
KR originally concentrated around formalisms that are typically tuned
to deal with relatively small knowledge bases, but provide powerful
reasoning services, and are highly expressive.  In contrast, DB
research mainly dealt with efficient storage, retrieval, and sharing
large amounts of data. However, data representation and query
languages were relatively simple, and reasoning played only a minor
role.

This distinction between the requirements in KR and DB is vanishing
rapidly. On the one hand, to be useful in realistic applications, a
modern KR system must be able to handle large data sets.  This
suggests that techniques developed in the DB area could be useful for
knowledge bases.  On the other hand, the information stored in DBs is
becoming more complex, thus requiring more intelligent retrieval and
reasoning techniques.

In 1999, KRDB will focus on the representation, management, and
retrieval of INCOMPLETE INFORMATION. We will try to better understand
and compare the theories and technologies coming from KR and DB. The
following is an incomplete list of topics that may be of interest in
this context:

* Query languages for incomplete information.
* Null values and querying.
* Trade-off between the expressivity of the models for incomplete
  information and the complexity of query answering.
* Logical database approach: Closed vs. Open World Assumption,
  Completion axioms, etc.
* Modal operators and autoepistemic logics.
* Negation and incomplete information.
* Disjunctive databases and logic programs.
* Nonmonotonic reasoning for databases.
* Incompleteness in views and the view update problem.
* Nondeterministic queries.
* Object-oriented approaches to dealing with incomplete information.
* ABox reasoning in Description Logics and its relationship to
  databases.

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SUBMISSION OF PAPERS

Authors are invited to submit extended abstracts not exceeding 5 pages
(LaTeX 12-point article-style pages).  An extended abstract can be a
position paper or a summary of a full paper. A position paper may be a
viewpoint on a controversial topic or a summary of lessons learned
from recent research or practical experience. An abstract of a full
paper may be a description of a new mechanism or architecture, a
product or prototype, an application, or results of work in progress.
The extended abstracts will be reviewed with focus on relevance and
potential contribution to discussions.

Email submissions as self-contained standard Postscript attachments
should be sent by March 15, 1999 to:

Enrico Franconi at <········@cs.man.ac.uk>.

Accepted papers will be printed in the workshop proceedings; some
authors will be asked to prepare a longer version of their paper for
inclusion in the proceedings. Other selected contributions will be
included as 1-page abstracts for the discussion slot. The proceedings
will be electronically published as CEUR-Workshop Proceeding at
<http://sunsite.informatik.rwth-aachen.de/Publications/CEUR-WS/>. A
hard copy publication of the proceedings is also planned.

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IMPORTANT DATES

Deadline for submissions:   March 15, 1999
Notification of acceptance: April 24, 1999
Final papers due:           May 29, 1999
KRDB'99 Workshop:           July 29-30, 1999

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WORKSHOP CHAIRS:

Enrico Franconi, University of Manchester, UK
<········@cs.man.ac.uk>

Michael Kifer, University at Stony Brook, USA
<·····@cs.sunysb.edu>

PROGRAM COMMITTEE:

Elisa Bertino, University of Milano, Italy
Antony Bonner, University of Toronto, Canada
Alex Borgida, Rutgers University, USA
Mokrane Bouzeghoub, INRIA-Rocquencourt, France
Jan Van den Bussche, University of Limburg, Belgium
Diego Calvanese, University of Rome 'La Sapienza', Italy
Vinay Chaudhri, SRI International, USA
Jan Chomicki, Monmouth University, USA
Rick Hull, Lucent Technologies, USA
Mathias Jarke, Aachen University of Technology, Germany 
Georg Lausen, University of Freiburg, Germany
John Mylopoulos, University of Toronto, Canada
Werner Nutt, Hebrew University of Jerusalem, Israel 
Luigi Palopoli, University of Calabria, Italy

LOCAL CHAIR:

Patrick Lambrix, Linkoeping University, Sweden
<·····@ida.liu.se>

EXECUTIVE COMMITTEE:

Franz Baader, RWTH Aachen University of Technology, Germany 
Manfred Jeusfeld, KUB Tilburg, The Netherlands 
Werner Nutt, Hebrew University of Jerusalem, Israel 

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WORKSHOP LOCATION AND REGISTRATION

Information regarding costs, travel information, hotels, etc. will be
announced closer to the date of the workshop. Check the WWW page of
the workshop at <http://www.cs.man.ac.uk/img/krdb99/> for updates.

Enquiries about the KRDB'99 workshop can be made by mailing to the
workshop chairs.

The home page of the KRDB workshop series is at
<http://sunsite.informatik.rwth-aachen.de/Societies/KRDB/>.

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