July 12, 2011
On July 13 and July 14 the registration desk will open at 8.30.

July 6, 2011
New information on how to reach the DL 2011 venue is available on the venue page.

June 15, 2011
The workshop program is available.

June 8, 2011
The list of accepted papers is available.

April 27, 2011
Submission deadline extended to May 8, 2011.

April 21, 2011
Registration is open.

April 18, 2011
Final cfp has been posted.

September 27, 2010
Important dates have been posted.


- IJCAI 2011

Call for Papers

24th International Workshop on Description Logics (DL 2011)
Barcelona, Spain, July 13th to July 16th, 2011
The DL workshop is the major annual event of the description logic research community. It is the forum at which those interested in description logics, both from academia and industry, meet to discuss ideas, share information and compare experiences.
The workshop will be held at the Edifici Imagina (Avinguda Diagonal 177, Barcelona) from July 13th to July 16th, 2011.

Paper submission deadline:May 1, 2011 Extended to May 8, 2011
Notification of acceptance: June 5, 2011
Camera ready papers due: June 19, 2011
Workshop: July 13-16, 2011

We invite contributions on all aspects of description logics,such as:
  • foundations of description logics, including expressive power, decidability and complexity of reasoning, novel inference problems, and reasoning techniques for solving these problems;
  • extensions of description logics, including, but not limited to, closed-world and nonmonotonic reasoning, defaults, epistemic reasoning, temporal and spatial reasoning, procedural knowledge, and query languages;
  • integration of description logics with other formalisms, such as object-oriented representation languages, database query languages, constraint-based programming, logic programming, and rule-based systems;
  • use of description logics in applications or areas such as ontology engineering, ontology languages, databases, semi-structured data, document management, natural language, learning, planning, semantic web, and grid computing;
  • building systems based on description logics, with special emphasis on optimization and implementation techniques; and
  • tools that exploit description logic reasoning, such as ontology editors, database schema design, query optimization, and data integration tools.

We invite submissions of papers in Springer LNCS style, see
to arrive no later than May 1, 2011.
The length of submissions is limited to 11 pages, including title and abstract (can be omitted if necessary), and list of references. Papers must be submitted in PDF format via EasyChair; see
The workshop proceedings will be made available electronically in the CEUR Workshop Proceedings series; see
Accepted submissions will be selected for either oral or poster presentation; however, no distinction will be made in the workshop proceedings: all accepted papers can be 11 pages long.

The best paper among the ones written solely by students (i.e. persons not holding a PhD as of 1st of May 2011) will be awarded a prize of 500 euros. Authors of such papers are requested to indicate their eligibility upon submission at easychair.

  • Marcelo Arenas, Pontificia Universidad Católica de Chile:
    • "Exchanging more than Complete Data"
  • Gert Smolka, Saarland University:
    • "Incremental decision procedures for modal logic with nominals and eventualities"
  • Heiner Stuckenschmidt, Universität Mannheim:
    • "A Little Logic Goes a Long Way - Logical Reasoning in Web Data Integration and Ontology Learning"

Registration fees:
  • Regular, early (before or on June 19, 2011): 300 Euros
  • Regular, late (after June 19, 2011): 370 Euros
  • Student, early (before or on June 19, 2011): 200 Euros
  • Student, late (after June 19, 2011): 250 Euros
Students must provide proof of full-time status (copy of valid student ID card or letter from their institution or program director) and email it to
The registration fee includes lunches for the first three workshop days and one ticket for the social dinner.

A limited number of student grants are available for participation in DL 2011. Each grant will cover the workshop registration fee and will provide a contribution to the accommodation costs. The students who are interested in applying for this grant must write an email to the workshop organizers at declaring their interest in the student grant and providing (i) a proof of full-time student status (copy of valid student ID card or letter from their institution or program director), and (ii) a short justification confirming that the attendance to DL 2011 could not be financed by other means such as project funds. The deadline for applying to the student grants is June 19, 2011.

* Riccardo Rosati, Sapienza Università di Roma, Italy (Conference Chair)
* Sebastian Rudolph, Karlsruhe Institute of Technology, Germany (Program co-Chair)
* Michael Zakharyaschev, Birkbeck College, London, UK (Program co-Chair)
* Peter Mika, Yahoo! Research Barcelona, Spain (Local Organization Chair)

Sebastian Rudolph (Program co-Chair)
Michael Zakharyaschev (Program co-Chair)
Carlos Areces
Alessandro Artale
Meghyn Bienvenu
Alex Borgida
Andrea Cali
Diego Calvanese
Bernardo Cuenca Grau
Giuseppe De Giacomo
Achille Fokoue
Enrico Franconi
Birte Glimm
Rajeev Gore
Stijn Heymans
Pascal Hitzler
Ian Horrocks
Ullrich Hustadt
Yevgeny Kazakov
Boris Konev
Roman Kontchakov
Markus Krötzsch
Thomas Lukasiewicz
Carsten Lutz
Thomas Meyer
Maja Milicic
Boris Motik
Ralf Möller
Magdalena Ortiz
Jeff Z. Pan
Bijan Parsia
Peter Patel-Schneider
Rafael Peñaloza
Riccardo Rosati
Ulrike Sattler
Stefan Schlobach
Luciano Serafini
Evren Sirin
Viorica Sofronie-Stokkermans
Giorgos Stamou
Umberto Straccia
David Toman
Anni-Yasmin Turhan
Grant Weddell
Frank Wolter

* Information about registration, travel information, accommodation, etc., is available on the DL 2011 homepage:
* Enquiries about the DL 2011 workshop can be made by contacting the organizing committee:
* The official Description Logic home page is at