Georgios Chalkiadakis' Home Page


Ph.D. (2007), Department of Computer Science, University of Toronto, Canada. Supervisor: Craig Boutilier.
M.Sc. in Computer Science (Information Systems & Robotics and Machine Vision fields), Computer Science Department, University of Crete, Greece, 1999.

Interests: Artificial Intelligence; multi-agent systems; reinforcement learning in multi-agent systems; coalition formation
Favourites: Scientific | Non-scientific


From December 2006 to January 2011, I was working as a Research Fellow at the University of Southampton. I was a member of the IAM Group in the School of Electronics and Computer Science, working with Professor Nick Jennings.
Come February 2011, I am taking up an academic position at the Department of Electronic and Computer Engineering, Technical University of Crete, Chania, Greece
PhD Thesis: A Bayesian Approach to Multiagent Reinforcement Learning and Coalition Formation under Uncertainty.


Publications

A. Journal publications

  1. Georgios Chalkiadakis and Craig Boutilier: Sequentially Optimal Repeated Coalition Formation under Uncertainty". Journal of Autonomous Agents and Multi-Agent Systems (JAAMAS). Published online first, 5 November 2010. The final publication is available at www.springerlink.com.
  2. Georgios Chalkiadakis, Edith Elkind, Evangelos Markakis, Maria Polukarov and Nicholas R. Jennings: "Cooperative Games with Overlapping Coalitions". Journal of Artificial Intelligence Research (JAIR), vol. 39, pages 179-216, September 2010.

B. Conference publications

  1. Georgios Chalkiadakis, Valentin Robu, Ramachandra Kota, Alex Rogers and Nicholas R. Jennings: "Cooperatives of Distributed Energy Resources for Efficient Virtual Power Plants".In Proc. of the 10th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS-2011), Taipei, Taiwan, May 2011 (to appear).
  2. Georgios Chalkiadakis, Edith Elkind and Nicholas R. Jennings: "Simple Coalitional Games with Beliefs". In Proc. of the 21st International Joint Conference on Artificial Intelligence (IJCAI-09), Pasadena, California, July 2009.
  3. Georgios Chalkiadakis, Edith Elkind, Maria Polukarov and Nicholas R. Jennings: "The price of democracy in coalition formation". In Proc. 8th Int. Conf on Autonomous Agents and Multi-Agent Systems (AAMAS-2009), pages 401-408, Budapest, Hungary, May 2009.
  4. Georgios Chalkiadakis, Edith Elkind, Evangelos Markakis and Nicholas R. Jennings: "Overlapping Coalition Formation". In Proc. of the 4th International Workshop on Internet and Network Economics WINE-2008, pages 307-321, Shanghai, China, December 2008.
  5. Edith Elkind, Georgios Chalkiadakis and Nicholas R. Jennings: "Coalition Structures in Weighted Voting Games". In Proc. of the 18th European Conference on Artificial Intelligence (ECAI-2008), pages 393-397, Patras, Greece, July 2008. Best Paper Award Finalist.
  6. Georgios Chalkiadakis and Craig Boutilier: "Sequential Decision Making in Repeated Coalition Formation under Uncertainty". In Proc. of the 7th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS-2008), pages 347-354, Estoril, Portugal, May 2008.
  7. W.T. Luke Teacy, Georgios Chalkiadakis, Alex Rogers and Nicholas R. Jennings: "Sequential Decision Making with Untrustworthy Service Providers". In Proc. of the 7th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS-2008), pages 755-762, Estoril, Portugal, May 2008.
  8. Georgios Chalkiadakis, Evangelos Markakis and Craig Boutilier: "Coalition Formation under Uncertainty: Bargaining Equilibria and the Bayesian Core Stability Concept". In Proc. of the 6th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2007), pages 400-407, Honolulu, USA. You can retrieve the paper here.
  9. Georgios Chalkiadakis and Craig Boutilier: "Coalitional Bargaining with Agent Type Uncertainty". In Proc. of the 20th International Joint Conference on Artificial Intelligence (IJCAI-07), pages 1227-1232, Hyderabad, India, January 2007. You can retrieve the paper here.
  10. Georgios Chalkiadakis and Craig Boutilier: "Bayesian Reinforcement Learning for Coalition Formation Under Uncertainty". In Proc. of the 3rd Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2004), pages 1090-1097, New York, USA. Honorable Mention, Best Student Paper Award Finalist.You can view the abstract or you can retrieve the paper.
  11. Georgios Chalkiadakis and Craig Boutilier: "Coordination in Multiagent Reinforcement Learning: A Bayesian Approach". In Proc. of the 2nd Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS 2003), pages 709-716, Melbourne, Australia. You can view the abstract or you can retrieve the paper. [Note: It is mistakenly mentioned/implied in the originally published paper (the paper here is a corrected version) that the agents observe the rewards of others. This was not the case, nor was this observability assumption anywhere used or needed in our analysis. ]


Theses and Technical Reports


Events


I was the organizer of the Sequential Decision Making Reading Group at ECS.


E-mail: gehalkatgmaildotcom

You can have a look at my MSc Thesis Abstract.

Unpublished papers and reports... RL Reading Group
(Toronto, Ontario, Canada) (Heraklion, Crete, Greece)


On leaving Toronto, this is what I have to say...: Toronto is the place to be! Stranger, do visit Toronto! Or move here! :) Once a Torontonian, always a Torontonian.


UofT Department of Computer Science | University of Toronto