Georgios Chalkiadakis

 

 publications


Books

1.   Georgios Chalkiadakis, Edith Elkind, and Michael Wooldridge: Computational Aspects of Cooperative Game Theory. Morgan & Claypool Publishers, October 2011.

           - Book abstract, endorsements, and table of contents; and here is the book website.

          

Book Chapters

1.   Georgios Chalkiadakis and Michael Wooldridge: Weighted Voting Games. In F. Brandt, V. Conitzer, U. Endriss, J. Lang, and A. Procaccia (eds.): Handbook of Computational Social Choice. Cambridge University Press, April 2016. The official book website can be found here. You can download a free, complete, pdf version of the book, and read it using the password "cam1CSC" (graciously provided by the publisher).

2.   Angelos Chliaoutakis and Georgios Chalkiadakis: Interpreting the Past through Agent-Based Modeling and GIS. In A. Sarris (ed.): Best Practices of GeoInformatic Technologies for the Mapping of Archaeolandscapes. Archaeopress, November 2015.

 

Journal publications

1. Filippo Bistaffa, Alessandro Farinelli, Georgios Chalkiadakis, and Sarvapali D. Ramchurn: A Cooperative Game-Theoretic Approach to the Social Ridesharing Problem. Artificial Intelligence (AIJ), 2017. In press. Available online 24 Feb 2017.

2. Charilaos Akasiadis and Georgios Chalkiadakis: Cooperative Electricity Consumption Shifting. Sustainable Energy, Grids and Networks, Volume 9, pages 38-58, March 2017.

3. Charilaos Akasiadis and Georgios Chalkiadakis: Mechanism Design for Demand-Side Management. IEEE Intelligent Systems, Special Issue on AI and Economics, 32(1), pages 24-31, Jan-Feb 2017.

4. Valentin Robu, Georgios Chalkiadakis, Ramachandra Kota, Alex Rogers, and Nicholas R. Jennings: Rewarding Cooperative Virtual Power Plant Formation Using Scoring Rules. Energy, Volume 117, Part 1, pages 19-28, December 2016.

5. Angelos Chliaoutakis and Georgios Chalkiadakis: Agent-Based Modeling of Ancient Societies and their Organization Structure. Journal of Autonomous Agents and Multi-Agent Systems (JAAMAS), 30(6), pages 1072-1116, November 2016 (published online first: 25 January 2016).

6. Georgios Chalkiadakis, Gianluigi Greco, Evangelos Markakis: Characteristic Function Games with Restricted Agent Interactions: Core-Stability and Coalition Structures. Artificial Intelligence (AIJ), 232, pages 76-133, March 2016 (available online: 23 Dec 2015).

7. Georgios Chalkiadakis and Craig Boutilier: Sequentially Optimal Repeated Coalition Formation under Uncertainty. Journal of Autonomous Agents and Multi-Agent Systems (JAAMAS), 24(3), pages 441-484, May 2012 (published online first: 5 November 2010). Also available at  SpringerLink.

8. Georgios Chalkiadakis, Edith Elkind, and Michael Wooldridge: Cooperative Game Theory: Basic Concepts and Computational Challenges. IEEE Intelligent Systems , 27(3), pages 86-90, May/June 2012.

9. Georgios Chalkiadakis, Edith Elkind, Evangelos Markakis, Maria Polukarov and Nicholas R. Jennings: Cooperative Games with Overlapping Coalitions. Journal of Artificial Intelligence Research (JAIR), 39, pages 179-216, September 2010.

10. Georgios Chalkiadakis, Edith Elkind, Evangelos Markakis, Maria Polukarov, and Nicholas R. Jennings: Stability of Overlapping Coalitions. ACM SIGecom Exchanges, 8(1), July 2009.

 

Conference publications [full papers, thoroughly peer-reviewed]

1.    Filippos Christianos and Georgios Chalkiadakis: Efficient Multi-Criteria Coalition Formation using Hypergraphs (with Application to the V2G Problem). In Proc. of the 14th European Conference on Multi-Agent Systems (EUMAS-2016), Valencia, Spain, December 2016.

2.    Evangelos Tripolitakis and Georgios Chalkiadakis: Probabilistic Topic Modeling, Reinforcement Learning, and Crowdsourcing for Personalized Recommendations. In Proc. of the 14th European Conference on Multi-Agent Systems (EUMAS-2016), Valencia, Spain, December 2016.

3.    Charilaos Akasiadis and Georgios Chalkiadakis: Decentralized Large-Scale Electricity Consumption Shifting by Prosumer Cooperatives. In Proc. of the 21st European Conference on Artificial Intelligence (ECAI-2016), The Hague, The Netherlands, August 2016.

4.    Angelos Angelidakis and Georgios Chalkiadakis: Optimal Prosumer Decicion-Making using Factored MDPs. In Proc. of the 25thst International Joint Conference on Artificial Intelligence (IJCAI-2016), pages 4110-4114, New York, July 2016.

5.    Angelos Angelidakis and Georgios Chalkiadakis: Factored MDPs for Optimal Prosumer Decision-Making in Continuous State Spaces. In Proc. of the 13th European Conference on Multi-Agent Systems (EUMAS-2015), Athens, Greece, December 2015.

6.    Filippo Bistaffa, Georgios Chalkiadakis, Alessandro Farinelli, and Sarvapali D. Ramchurn: Recommending Fair Payments for Large-Scale Social Ridesharing. In Proc. of the 9th ACM Conference on Recommender Systems (ACM RecSys 2015), Vienna, Austria, September 2015.

7.    Angelos Angelidakis and Georgios Chalkiadakis: Factored MDPs for Optimal Prosumer Decision-Making. In Proc. of the 14th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS-2015), Istanbul, Turkey, May 2015. Honorable Mention, Best Student Paper Award Finalist.

8.    Athanasios Aris Panagopoulos, Georgios Chalkiadakis, and Nicholas R. Jennings: Towards Optimal Solar Tracking: A Dynamic Programming Approach. In Proc. of the 29th AAAI Conference on Artificial Intelligence (AAAI-2015), Austin, TX, USA, January 2015.

9.    Konstantinos Babas, Georgios Chalkiadakis, and Evangelos Tripolitakis: You Are What You Consume: A Bayesian Method For Personalized Recommendations. In Proc. of the 7th ACM Conference on Recommender Systems (ACM RecSys 2013), Hong Kong, China, October 2013.

10.    Charilaos Akasiadis and Georgios Chalkiadakis: Agent Cooperatives for Effective Power Consumption Shifting. In Proc. of the 27th AAAI Conference on Artificial Intelligence (AAAI-2013), Bellevue, WA, USA, July 2013. [Note: This is a slightly extended version of the camera-ready AAAI paper. The camera-ready AAAI-13 paper itself can be found here.]

11.    Athanasios Aris Panagopoulos, Georgios Chalkiadakis, and Eftichios Koutroulis: Predicting the Power Output of Distributed Renewable Energy Resources within a Broad Geographical Region. In Proc. of the 20th European Conference on Artificial Intelligence, Prestigious Applications of Intelligent Systems track (ECAI-2012/PAIS-2012), Montpellier, France, August 2012. PAIS-2012 Best Student Paper Award winner

12.   Ramachandra Kota, Georgios Chalkiadakis, Valentin Robu, Alex Rogers, and Nicholas R. Jennings: Cooperatives for Demand Side Management. In Proc. of the 20th European Conference on Artificial Intelligence, Prestigious Applications of Intelligent Systems track (ECAI-2012/PAIS-2012), Montpellier, France, August 2012.

13.   Tim Matthews, Sarvapali D. Ramchurn, and Georgios Chalkiadakis: Competing with Humans in Fantasy Football: Team Formation in Large Partially Observable Domains. In Proc. of the 26th AAAI Conference on Artificial Intelligence (AAAI-2012), Toronto, ON, Canada, July 2012.

- This work was also covered in a New Scientist article (“AI fantasy football manager picks a winning team”)

- …and in an IEEE Spectrum podcast: "The Computer the Beat Two Million Humans at Fantasy Football"…

- …and in an IEEE Intelligent Systems "In the News" article: "Intelligent Program Wins at Fantasy Soccer" (March/April 2013, vol. 28, no. 2)

14.   Valentin Robu, Ramachandra Kota, Georgios Chalkiadakis, Alex Rogers, and Nicholas R. Jennings: Cooperative Virtual Power Plant Formation Using Scoring Rules. In Proc. of the 26th AAAI Conference on Artificial Intelligence (AAAI-2012), Toronto, ON, Canada, July 2012.

- A preliminary version of this paper was also accepted as a short article (extended abstract) in AAMAS-2012.

15.   Georgios Chalkiadakis, Evangelos Markakis, and Nicholas R. Jennings: Coalitional Stability in Structured Environments. In Proc. of the 11th Int. Conf. on Autonomous Agents and MultiagentSystems (AAMAS-2012), Valencia, Spain, June 2012.

16.   W.T. Luke Teacy, Georgios Chalkiadakis, Alessandro Farinelli, Alex Rogers, Nicholas R. Jennings, Sally McClean and Gerard Parr: Decentralized Bayesian Reinforcement Learning for Online Agent Collaboration. In Proc. of the 11th Int. Conf. on Autonomous Agents and MultiagentSystems (AAMAS-2012), Valencia, Spain, June 2012.

17.    Yair Zick, Georgios Chalkiadakis, and Edith Elkind: Overlapping Coalition Formation Games: Charting the Tractability Frontier. In Proc. of the 11th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS-2012), Valencia, Spain, June 2012.

18.    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.

19.   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), pages 85-90, Pasadena, California, July 2009.

20.   Georgios Chalkiadakis, Edith Elkind, Maria Polukarov, and Nicholas R. Jennings: The Price of Democracy in Coalition Formation. In Proc. of the 8th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS-2009), pages 401-408, Budapest, Hungary, May 2009.

21.    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.

·        A preliminary version of this paper also appeared in CTN-2008 (the13th Coalition Theory Network workshop - no published proceedings).

22.    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.

·        A version of this paper also appeared in COMSOC-2008 (the 2nd International Workshop on Computational Social Choice - no published proceedings).

23.    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.

24.   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.

25.   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, May 2007.

26.    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.

27.   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, July 2004. Honorable Mention, Best Student Paper Award Finalist.

28.   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, July 2003.    [Note: It is mistakenly mentioned/implied in the originally published paper (the version in this site 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. ]

 

Short papers [thoroughly peer-reviewed, accepted as shorts]

1.    Filippos Christianos and Georgios Chalkiadakis: Employing Hypergraphs for Efficient Coalition Formation with Application to the V2G Problem. In Proc. of the 22nd European Conference on Artificial Intelligence (ECAI-2016), The Hague, The Netherlands, August 2016.

2.    Angelos Chliaoutakis and Georgios Chalkiadakis: Evolutionary agent-based modeling of past societies’ organization structure.. In Proc. of the 22nd European Conference on Artificial Intelligence (ECAI-2016), The Hague, The Netherlands, August 2016.

3.    Charilaos Akasiadis and Georgios Chalkiadakis: Stochastic Filtering Methods for Predicting Agent Performance in the Smart Grid. . In Proc. of the 21st European Conference on Artificial Intelligence (ECAI-2014), Prague, Czech Republic, August 2014.

 An extended version of this paper, entitled Predicting Agent Trustworthiness for Large-Scale Power Demand Shifting , appeared in The AI for the Smart Grid Workshop (AI4SG) @ The 9th Hellenic Conference on Artificial Intelligence (SETN-2016), Thessaloniki, Greece, May 2016.

4.    Angelos Chliaoutakis and Georgios Chalkiadakis: Utilizing Agent-Based Modeling to Gain New Insights into the Ancient Minoan Civilization. In Proc. of the 13th Int. Conf. on Autonomous Agents and Multiagent Systems (AAMAS-2014), Paris, France, May 2014.

5. Valentin Robu, Ramachandra Kota, Georgios Chalkiadakis, Alex Rogers, and Nicholas R. Jennings: Cooperative Virtual Power Plant Formation Using Scoring Rules. In Proc. of the 11th Int. Conf. on Autonomous Agents and MultiagentSystems (AAMAS-2012), Valencia, Spain, June 2012.

 

Theses and Technical Reports

Georgios Chalkiadakis: A Bayesian Approach to Multiagent Reinforcement Learning and Coalition Formation under Uncertainty. PhD Thesis, Department of Computer Science, University of Toronto, 2007. Supervisor: Craig Boutilier

Georgios Chalkiadakis: An Agent-Based Architecture for the Conduction of Voting. Master of Science Thesis, Computer Science Department, University of Crete, 1999. Supervisor: Stelios Orphanoudakis  (The document is in greek.)

Georgios Chalkiadakis: Multiagent Reinforcement Learning: Stochastic Games With Multiple Learning Players. PhD Qualifying Depth Oral Report, Department of Computer Science, University of Toronto, 2003.

Dimitrios Katehakis, Georgios Chalkiadakis, Manolis Tsiknakis, and Stelios Orphanoudakis: A Distributed, Agent-Based Architecture for the Acquisition, Management, Archiving and Display of Real-Time Monitoring Data in the Intensive Care Unit (pdf) and (ps.gz), FORTH-ICS/TR-261, October 1999.

 

 

 

Georgios Chalkiadakis