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AISB event Bulletin Item

LAST CALL FOR PAPERS:" Nonmonotonic Reasoning, Action and Change", 17-18 July 2011, SPAIN

9th International Workshop on Nonmonotonic Reasoning, Action and Change(NRAC 2011) -July 17 (full day) & 18 (morning) 2011, Barcelona, Spain -(held in conjunction with IJCAI 2011)


The biennial Workshop on Nonmonotonic Reasoning, Action, and Change (NRAC) is an established workshop with an active and loyal community. Since its inception in 1995, it has always been held in conjunction with IJCAI, each time with growing success. We invite submissions of research papers for presentation at NRAC 2011 edition, a 1.5-day workshop to be held in Barcelona, Spain as part of the International Joint Conference on Artificial Intelligence (IJCAI-11) workshop program (July 16-22, 2011).

Workshop Aims

An intelligent agent exploring a rich, dynamic world, needs cognitive capabilities in addition to basic functionalities for perception and reaction.
The abilities to reason nonmonotonically, to reason about actions, and to change one's beliefs, have been identified as fundamental high-level cognitive functions necessary for common sense. Research in all three areas has made significant progress during the last decades. It is, however, crucial to bear in mind the common goal of designing intelligent agents. Researchers should be aware of advances in all three fields since often advances in one field can be translated into advances in another. Many deep relationships have already been established between the three areas and the primary aim of this workshop is to further promote this cross-fertilization. A closer look at recent developments in the three fields reveals how fruitful such cross-fertilization can be.

Comparing and contrasting current formalisms for Nonmonotonic Reasoning, Reasoning about Action and Belief Revision helps identify the strengths and weaknesses of the various methods available. It is an important activity that allows researchers to evaluate the state-of-the-art. Indeed a significant advantage of using logical formalisms as representation schemes is that they facilitate the evaluation process. Moreover, following the initial success, more complex real-world applications are now within grasp. Experimentation with prototype implementations not only helps to identify obstacles that arise in transforming theoretical solutions into operational solutions, but also highlights the need for the improvement of existing formal integrative frameworks for intelligent agents at the ontological level.

For the purpose of developing practical solutions to real-world problems, some obvious questions arise: What nonmonotonic logics and what theories of action and change have been implemented? How to compare them? Which ones are implementable? What can be learned from existing applications? What is needed to improve their scope and performance? Despite the progress over the last few years, these questions and other related problems for theories of nonmonotonic reasoning, action, and change, still remain open. We hope to explore new approaches to these problems during the workshop.

This workshop will bring together researchers from all three areas with the aim

  * Compare and evaluate existing formalisms.
  * Report on new developments and innovations.
  * Identify the most important open problems in all three areas.
  * Identify possibilities of solution transferral between the areas.
  * Identify important challenges for the advancement of the areas.


There will be a special theme at this year's NRAC. We especially encourage submissions that describe applications of research in the three main areas of interest of the workshop. In particular, we welcome submissions about competitions and contests that are related to the areas of interest of the workshop, such as the ICAPS Planning Competitions (, the Answer Set Programming Competition (, the General Game Playing Competition (, and the Multi-Agent Contest (

We plan to devote a session of the workshop on papers that address the special theme and accompany the presentation of these papers by a panel discussion about the difficulties that arise when applying research of this field in real-world systems, as well as insights about how we can stimulate research, attract students, test and compare approaches in non-trivial domains, identify new challenges, and build a closer connection between academic research and practical applications. We also plan to arrange invited talks around the special theme.


The dates below are tentative;  please check the workshop Web page for confirmed dates.

Submission deadline:                    April 8, 2011 (EXTENDED)
Notification date:                      May 13, 2011
Camera ready submission deadline:       May 27, 2011
Workshop:                               July 17 (full day) & 18 (morning), 2011
IJCAI-2011 conference:                  July 16-22, 2011


Registration for NRAC 2011 is managed by IJCAI. Forms and Information on registration, pricing, travel and accommodation are available on the IJCAI-11 website. Participants are strongly urged to register as soon as possible to take advantage of discounted registration fees and to secure accommodation.

We welcome participation and submission from all members of the Artificial Intelligence research community.

Like previous NRAC workshops, we hope NRAC 2011 to be a highly participatory and discussion-oriented forum. The workshop will begin with a distinguished invited speaker, and will conclude with a panel on the hot issues identified during the day. Authors of accepted papers will present their work, with ample time for discussion.

A complete program will be made available as soon as a final decision on accepted papers has been made.


NRAC-11 paper submissions must be formatted according to the IJCAI-11 paper guidelines at

Papers must not exceed 8 formatted pages. Overlength papers will not be accepted for publication. Papers must be submitted electronically in PDF format by the due date. More details about the deadline for submission and notification of acceptance will follow.

Please ensure the author names and affiliation are under the title.

Submissions should emphasize and justify their innovation and significance.

Please note: Papers should describe new unpublished work. Accepted IJCAI-11 Papers and Posters will not be accepted at NRAC-11.

Submission website:

Printed proceedings will be offered as working notes to delegates, and will be published online (with an ISBN) through the ePress of the University of Technology, Sydney.


Xiaoping Chen, University of Science and Technology China, China Jim Delgrande, Simon Fraser Unviersity, Canada Jrme Lang, Universite Paul Sabatier, France Thomas Meyer, Meraka Institute, South Africa Michael Thielscher, University of NSW, Australia Sheila McIlraith, University of Toronto, Canada Eduardo Ferm University of Madeira, Portugal Dongmo Zhang, University of Western Sydney, Australia Mehdi Dastani, Utrecht University, The Netherlands Giuseppe De Giacomo, Sapienza Universita' di Roma, Italy Christian Fritz, PARC (Palo Alto Research Center), USA Leora Morgenstern, SAIC Advanced Systems and Concepts, USA Pavlos Peppas, University of Patras, Greece Sajjad Haider, Institute of Business Administratio,  Pakistan


Sebastian Sardina, RMIT University, Australia Stavros Vassos, National and Kapodistrian University of Athens, Greece


Gerhard Brewka, University of Leipzig, Germany Michael Thielscher, University of NSW, Australia Leora Morgenstern, SAIC Advanced Systems and Concepts, USA Maurice Pagnucco, University of NSW, Australia Pavlos Peppas, University of Patras, Greece Mary-Anne Williams, University of Technology, Sydney, Australia Andreas Herzig, Universite Paul Sabatier, France Benjamin Johnston, University of Technology, Sydney, Australia