Robin Cohen

Professor
Artificial Intelligence Group
David R. Cheriton School of Computer Science

University of Waterloo
200 University Avenue West
Waterloo, Ontario, Canada N2L 3G1

2011-2012 Teaching

2010-2011 Teaching

2009-2010 Teaching

Areas of Research

Current Research Interests (as of October 2010)

Degrees

Employment History

2011 - Present Associate Dean Research, Faculty of Mathematics, University of Waterloo
2009 - Present Director, BBA/BCS Program at the University of Waterloo
2002 - 2005 Associate Dean, Graduate Studies and Research, Faculty of Mathematics, University of Waterloo
2001 - 2002 Graduate Recruiting Officer, School of Computer Science, University of Waterloo
1998 - Present  Professor, Computer Science, University of Waterloo
1990 - 1998Associate Professor, Computer Science, University of Waterloo
1986 - 1990Assistant Professor, Computer Science, University of Waterloo
1984 - 1986Research Assistant Professor, Computer Science, University of Waterloo
 
2010 - 2013Cheriton Fellowship, David R. Cheriton School of Computer Science, University of Waterloo
2009Award for Excellence in Graduate Supervision, University of Waterloo
2008Faculty of Mathematics Award for Distinction in Teaching, University of Waterloo
2002 - 2005Faculty Fellowship, Faculty of Mathematics, University of Waterloo

Graduate Supervisions

Completed: 14 Masters, 12 PhD, plus 1 Postdoctoral (1 PhD who did not complete)
In Progress: 2 MMath, 3 PhD

Current Graduate Students

Reid Kerr, PhD (rckerr AT cs.uwaterloo.ca)
John Champaign, PhD (jchampai AT uwaterloo.ca)
Hadi Hosseini, PhD (h5hossei AT uwaterloo.ca)
John Finnson, MMath (jfinnson AT uwaterloo.ca)
John Doucette, MMath (j3doucet AT uwaterloo.ca)

Former Graduate Students

Joshua Gorner
(MMath, 2011) 		Advisor Networks and Referrals for Improved Trust Modelling in Multi-Agent Systems
Hyunggu Jung
(MMath, 2010) 		Reasoning About Benefits and Costs of Interaction with Users in Real-Time Decision Making Environments with Application to Healthcare Scenarios


Georgia Kastidou
(PhD, 2010) 		Trust-Based Incentive Mechanisms for Community-Based Multiagent Systems
(co-supervised by K. Larson)

Jie Zhang
(PhD, 2009) 		Promoting Honesty in E-Marketplaces: Combining Trust Modeling and Incentive Mechanism Design
(Winner of Alumni Gold Medal (Top PhD student at UW))
Aaditeshwar Seth
(PhD, 2008) 		Design of a Recommender System for Participatory Media Built on a Tetherless Communication Infrastructure
(co-supervised by S. Keshav)
Dana Wilkinson
(PhD, 2007) 		Subjective Mapping
(co-supervised by Dale Schuurmans and Mike Bowling)

Reid Kerr
(MMath, 2007)

Toward Secure Trust and Reputation Systems for Electronic Marketplaces
(Winner of Alumni Gold Medal (Top Masters Student at UW))
Jiye Li
(PhD, 2007) 		Rough Set Based Rule Evaluations and Their Applications
(co-supervised by Nick Cercone)
Kevin Regan
(MMath, 2006) 		A Social Reputation Model for Electronic Marketplaces Sensitive to Subjectivity, Deception and Change
(Winner of Outstanding Achievement in Graduate Studies Award (Top Masters Student in Faculty of Mathematics at UW))

Michael Cheng
(MMath, 2005) 		A Hybrid Transfer of Control Approach to Designing Adjustable Autonomy Multiagent Systems
(Winner of Alumni Gold Medal (Top Masters Student at UW))

Chris Micacchi
(MMath, 2004) 		An Architecture for Multi-Agent Systems Operating in Soft Real-Time Environments with Unexpected Events
(Winner of Outstanding Achievement in Graduate Studies Award (Top Masters Student in Faculty of Mathematics at UW))

Michael Fleming
(PhD, 2003)		 Reasoning about Interaction in Mixed-Initiative Artificial Intelligence Systems


Thomas Tran
(PhD, 2003) 		Reputation-Oriented Reinforcement Learning Strategies for Economically-Motivated Agens in Electronic Market Environments
(Winner of Governor General Gold Medal (Top PhD Student at UW))

David Chen
(MMath, 2002; Part-Time) 		AERO: An Outsourced Approach to Execption Handling in Multiagent Systems


Curtis Cartmill
(MMath, 1999) 		A Middle-Agent Architecture for Information Extraction


Toby Donaldson
(PhD, 1998)		A Computational Model of Turn-Taking in Discourse


Michael Fleming
(MMath, 1998)		 Designing More Interactive Interface Agents


Marzena Makuta
(PhD, 1997)		A Computational Model of Lexical Cohesion Analysis and its Application to the Evaluation of Text Coherence


Toby Donaldson
(MMath, 1994) 		Constraining Focus of Attention Through Domain and User Modeling in Natural Language Report Generation
(co-supervised by Chrysanne Di Marco)

Jennifer Chu
(MMath, 1991)		Introducing a Multi-Dimensional User Model to Tailor Natural Language Generation


Fei Song
(PhD, 1991)		 A Processing Model for Temporal Analysis and its Application to Plan Recognition


Bruce Spencer
(PhD, 1990) 		Assimilation in Plan Recognition via Truth Maintenance with Reduced Redundancy


Peter van Beek
(PhD, 1990) 		Exact and Approximate Reasoning about Qualitative Temporal Relations


David Hsu
(MMath, 1989) 		A Processing Model for Re-Direction Clues in Discourse


Mark Young
(MMath, 1987) 		The Design and Implementation of an Evidence Oracle for the Understanding of Arguments


Peter van Beek
(MMath, 1986)		 A Computational Model for User-Specific Explanations From Expert Systems


Publications

All of the co-authors listed were graduate students under my supervision or graduate students in one of my courses, with the following exceptions. Jones, L. Cohen, Gotlieb, Poupart, Larson, Godfrey and Boutaba were colleagues. Ardissono was a visiting PhD student. Schmidt was a student of van Beek's. van Beek was a colleague from 1992 onwards.

Almost all of my papers reside with my co-authors. If you are interested in a paper, please correspond with one of them. Links to their websites are below (for those who have sites):

Publication List

I - Chapters in Books

  1. G. Kastidou and R. Cohen; Trust-Oriented Utility-Based Community Structure in Multiagent Systems; book chapter in Economic Models and Algorithms for Distributed Systems; D. Neumann, M. Baker, J. Altmann and O. Rama, eds; Nielsen Books; accepted 2009, to appear 2010; Spring Publishers; p.45-62 .

  2. J. Zhang, R. Cohen and K. Larson; A Trust-Based Incentive Mechanism for E-Marketplaces; Lecture Notes in Artificial Intelligence Special Issue on Trust in Agent Societies; R. Falcone, S. Barber, J. Sabater, M. Singh, eds.; Springer Publishers; p.135-161; February 2009.

  3. M. Fleming and R. Cohen; Mixed-Initiative Translation of Web Pages; book chapter in LNCS 1934 Envisioning Machine Translation in the Information Future; pgs 1-20; 2008.

  4. Kastidou, G. and Cohen, R.; An approach for delivering personalized advertisements in interactive TV customized to both users and advertisers; book chapter for Interactive Digital Television: Technologies and Applications; IDEA Group; April 2007 (20 pages).

  5. Song, F. and Cohen, R.; Tense interpretation in the context of narrative; Chapter 19 in The Language of Time: A Reader, I. Mani, J. Pustejovsky and R. Gaizauskas eds.; Oxford University Press, 2005 (12 pages)

  6. Cohen, R. and Fleming, M.; Adjusting the autonomy in mixed-initiative systems by reasoning about interaction; Chapter 7 in Agent Autonomy, H. Hexmoor, R. Falcone and C. Castlefranchi, eds.; Kluwer Academic Publishers; November 2002, p.105-120

  7. Cohen, R., Allaby, C., Cumbaa, C., Fitzgerald, M., Ho, K., Hui, B., Latulipe, C., Lu, F., Moussa, N., Pooley, D., Qian, A. and S. Siddiqi; What is Initiative?; in Computational Models of Mixed-Initiative Interaction, S. Haller, S. McRoy and A. Kobsa, eds.; Kluwer Academic Publishers, 1999

  8. Cohen, R.; Logic programming and the analysis of discourse; in Logic and Logic Grammars for Language Processing, P. Saint-Dizier and S. Szpakowicz eds., Ellis-Horwood series in Artificial Intelligence (1990) pp. 205-222

  9. Cohen, R. and Jones, M.; Incorporating User Models into Expert Systems for Educational Diagnosis; in User Models in Dialog Systems, A. Kobsa and W. Wahlster, eds., Springer Verlag; September 1989, pp. 313-33

  10. Cohen, R.; Studying Arguments to Gain Insight into Discourse Structure; in The Structure of Multimodal Dialogues, M.M. Taylor, F. Neel and D.G. Bouwhuis, eds., North-Holland. (July 1989); pp. 75-84


II - Refereed Journal Publications

  1. R. Cohen, H. Jung, M. Fleming and M. Cheng; A User Modeling Approach to Reasoning About Interaction Sensitive to Bother and Its Application to Hospital Decision Scenarios; User Modeling and User Adapative Interaction Journal special issue on Personalization in e-Health; Volume 21, Numbers 4-5; October 2011; p.441-484.

  2. J. Zhang, R. Cohen and K. Larson; Combining Trust Modeling and Mechanism Design for Promoting Honesty in E-Marketplaces; Computational Intelligence, 2011 (24 pages) (to appear).

  3. J. Zhang, C. Chen and R. Cohen; Trust Modeling for Message Relay Control and Local Action Decision Making in VANETs; Security and Communication Networks journal; 2011 (15 pages) (to appear).

  4. J. Zhang and R. Cohen; A Framework for Trust Modeling in Multiagent Electronic Marketplaces with Buying Advisors to Consider Varying Seller Behavior and the Limiting of Seller Bids; ACM Transactions on Intelligent Systems and Technology (ACM TIST), 2011 (22 pages) (to appear).

  5. R. Kerr and R. Cohen; TREET: The Trust and Reputation Experimentation and Evaluation Testbed; Electronic Commerce Research Journal; Springer; accepted December 2009 (20 pages) .

  6. U. Minhas, J. Zhang, T. Tran and R. Cohen Expanded Trust Management for Agents in Vehicular Ad-Hoc Networks; International Journal of Computational Intelligence; accepted January 2010; 10 pages .

  7. R. Kerr and R. Cohen; Trust as a Tradable Commodity: A Foundation for Safe Electronic Marketplaces; Computational Intelligence Journal; accepted October 2009; Wiley-Blackwell; (34 pages) .

  8. M. Sensoy, J. Zhang, P. Yolum and R. Cohen; POYRAZ: Context-Aware Service Selection Under Deception; Computational Intelligence Volume 25 Issue 4; November 2009; Wiley-Interscience; p.335-366.

  9. C. Micacchi and R. Cohen; A Framework for Simulating Real-Time Multiagent Systems; Knowledge and Information Sciences journal; Volume 17, Number 2; p.135-166; 2008.

  10. J. Zhang and R. Cohen; Evaluating the Trustworthiness of Advice about Selling Agents in E-Marketplaces: A Personalized Approach; Journal of Electronic Commerce and Research Applications; Volume 7, Issue 3; pp.330-340; 2008.

  11. Zhang, J., Ghorbani, A.and Cohen R.; A Familiarity-based Trust Model for Effective Selection of Sellers in Multiagent E-commerce Systems, International Journal of Information Security, Vol. 6, No. 5, p.333-344, 2007.

  12. Zhang, J., Kerr, R. and Cohen, R.; Promoting Security in Electronic Marketplaces through the Modeling of Trust; Journal of Business and Technology; Issue 2, 2007 (16 pages)

  13. Zhang, J. and Cohen R; A Comprehensive Approach for Sharing Semantic Web Trust Ratings, Computational Intelligence, Vol. 23, No. 3, p.302-319, 2007.

  14. Caine, A. and Cohen, R.; Tutoring an Entire Game Using Dynamic Strategy Graphs: The Mixed-Initiative Sudoku Tutor; Journal of Computers; Vol. 2, No. 1, p.20-32, February 2007.

  15. Micacchi, C. and Cohen, R.; A Multi-Agent Architecture for Robotic Systems in Real-Time Environments; International Journal of Robotics and Automation; Vol 21, 2006 (9 pages).

  16. Tran, T. and Cohen, R.; The Stability of Electronic Marketplaces Where Buying Agents Use Reliability Modeling to Select Selling Agents; Journal of Business and Technology; September 2005 (15 pages).

  17. Regan, K, Cohen, R. and Tran, T.; Designing Adaptive Buying Agents in Electronic Markets Using Advice from Other Buyers to Model Seller Reputation; Journal of Business and Technology; September 2005 (15 pages).

  18. Tran, T. and Cohen, R.; Equilibrium in e-markets populated with reputation-oriented learning agents; New Generation Computing Journal, Vol. 23, No. 1; November 2004 (10 pages).

  19. Tran, T. and Cohen, R.; The advantages of designing adaptive business agents using reputation modelling compared to the approach of recursive modelling; Computational Intelligence special issue on Business Agents and the Semantic Web, Vol. 20, No. 4; November 2004 (15 pages).

  20. Tran, T. and Cohen, R.; A reputation-oriented reinforcement learning strategy for agents in electronic marketplaces; Computational Intelligence, Vol. 18, No. 4, p.550-565; November 2002.

  21. Cohen, R., Allaby, C., Cumbaa, C., Fitzgerald, M., Ho, K., Hui, B., Latulipe, C., Lu, F., Moussa, N., Qian, A., Pooley, D. and Saddiqi, S.; What is Initiative; UMUAI Special Issue on Mixed-Initiative Interaction; Vol. 8, No. 3-4; pp.171-214; December 1998.

  22. Song, F. and Cohen, R.; A strengthened algorithm for temporal reasoning about plans; Computational Intelligence, Volume 12, Number 2, pp.331-356, 1996.

  23. van Beek, P., Cohen, R. and K. Schmidt; From plan critiquing to clarification dialogue for cooperative response generation; Computational Intelligence, Volume 9, Number 3, pp.132-154, 1993.

  24. Cohen, R., Song, F., Spencer, B. and P. van Beek; Exploiting Temporal and Novel Information from the User in Plan Recognition; User Modeling and User Adapted Interaction Journal, Vol. 1, No. 2, pp. 125-148 , 1991.

  25. Cohen, R. and Young, M.; Determining Evidence Relations in Natural Language Arguments; Computational Intelligence, Vol. 7, No. 2, pp. 110-118, 1991.

  26. Cohen, R.; Implementing a model for understanding goal-oriented discourse; International Journal of Intelligent Systems, Vol. 5.,pp. 1-31, 1990.

  27. Cohen, R.; A Processing Model for the Analysis of One-Way Arguments in Discourse; Argumentation, Vol. 4, pp. 53-68, 1990.

  28. van Beek, P. and Cohen, R.; Exact and Approximate Reasoning about Temporal Relations; Computational Intelligence, Vol. 6, pp 132-144 (1990).

  29. Cohen, R., Jones, M., Sanmugasunderam, A., Spencer, B. and L. Dent; Providing Responses Specific to a User's Goals and Background; International Journal of Expert Systems, Vol. 2, No. 2, pp 135-162 (1989).

  30. Gotlieb, C.C. and Cohen, R.; Educating Tomorrow's Professionals; Journal of Business Ethics; Vol. 8, No. 2 and 3; pp. 193-200 (1989)

  31. Cohen, R.; On the Relationship between User Models and Discourse Models; Computational Linguistics special issue on User Modeling, Vol. 14, No. 3, pp. 88-90 (September 1988).

  32. Cohen, R.; Analyzing the Structure of Argumentative Discourse; Computational Linguistics, Vol. 13, No: 1-2, pp. 11-24 (January - June 1987).


III - Papers in Refereed Conference Proceedings

  1. J. Doucette, A. Khan, and R. Cohen. A Comparative Evaluation of an Ontological Medical Decision Support System (OMeD) for Critical Environments. In Proceedings of the ACM International Health Informatics Symposium 2012; 5 pages; January 2012.

  2. H. Hosseini, J. Hoey, and R. Cohen. Multi-agent Patient Scheduling through Auctioned Decentralized MDPs. In Procedings of 6th INFORMS Workshop on Data Mining and Health Informatics 2011; 6 pages; November 2011.

  3. J. Champaign, R. Cohen, and J. Zhang. The Validation of an Annotations Approach to Peer Tutoring Through Simulation Incorporating the Modeling of Reputation. In Proceedings of International Conference on Computers in Education (ICCE); 5 pages; November 2011

  4. R. Kerr and R. Cohen. Detecting and Identifying Coalitions. In Proceedings of Twenty-Fifth Conference on Artificial Intelligence (AAAI 2011) Workshop on Plan, Activity and Intent Recognition; 8 pages; August 2011.

  5. A. Khan, J. Doucette, and R. Cohen. An Ontological Approach for Querying Distributed Heterogeneous Information Systems Under Critical Operational Environments. In Proceedings of the 3rd Canadian Semantic Web Symposium; pages 76-88; August 2011.

  6. J. Gorner, J. Zhang and R. Cohen. Improving the Use of Advisor Networks for Multi-Agent Trust Modelling, In Proceedings of the 9th Annual Conference on Privacy, Security and Trust (PST), 2011

  7. J. Champaign, J. Zhang, and R. Cohen. Coping with Poor Advice from Peers in Peer-Based Intelligent Tutoring: The Case of Avoiding Bad Annotations of Learning Objects. In Proceedings of User Modeling, Adaptation and Personalization (UMAP); 12 pages; July 2011

  8. J. Champaign and R. Cohen. Exploring the Effects of Errors in Assessment and Time Requirements of Learning Objects in a Peer-Based Intelligent Tutoring System (Intelligent Tutoring Track). In Proceedings of FLAIRS Conference; 6 pages; May, 2011

  9. A. Khan, J. Doucette, C. Jin, L. Fu, and R. Cohen. An Ontological Approach to Data Mining For Emergency Medicine. In Proceedings of the 2011 North East Decision Sciences Institute Annual Conference; 20 Pages; April 2011

  10. C. Chen, J. Zhang, R. Cohen and P. Ho; Secure and Efficient Trust Opinion Aggregation for Vehicular Ad-hoc Networks; Proceedings of 2010 IEEE Vehicular Technology Conference; 5 pages; 2010.

  11. H. Wang, J. Zhang, C. Wan, S. Shao, R. Cohen, J. Xu and P. Li; Web Service Selection for Multiple Agents with Incomplete Preferences; Proceedings of IEEE/WIC/ACM International Conference on Web Intelligence (WI); 8 pages; 2010.

  12. U. Minhas, J. Zhang, T. Tran and R. Cohen; Intelligent Agents in Mobile Vehicular Ad-Hoc Networks: Leveraging Trust Modelling Based on Direct Experience with Incentives for Honesty; Proceedings of IAT-2010; 5 pages; 2010.

  13. C. Chen, J. Zhang, R, Cohen, P. Ho; A Trust Modeling Framework for Message Propagation and Evaluation in VANETs; Proceedings of ITCS 2010; (Best Paper Award) 8 pages; 2010.

  14. A. Seth, J. Zhang, R. Cohen; Bayesian Credibility Modeling for Personalized Recommendation in Participatory Media; Proceedings of 2010 International Conference on User Modeling, Adaptation and Personalization (UMAP); 12 pages; 2010.

  15. J. Zhang, R. Cohen and K. Larson; Leveraging a Social Network of Trust for Promoting Honesty in E-Marketplaces; Proceedings of 2010 IFIP International Conference on Trust Management (IFIPTM); 16 pages; 2010.

  16. C. Chen, J. Zhang, R. Cohen and P. Ho; A Trust-Based Message Propagation and Evaluation Framework in VANETs; Proceedings of 2010 IFIPTM Conference; 8 pages; 2010.

  17. J. Champaign and R. Cohen; Peer-Based Intelligent Tutoring Systems: A Corpus-Oriented Approach; Proceedings of 2010 International Conference on Intelligent Tutoring Systems; 3 pages; 2010.

  18. J. Champaign and R. Cohen; An Annotations Approach to Peer Tutoring; Proceedings of 2010 Educational Data Mining Conference; 10 pages; 2010.

  19. J. Champaign and R. Cohen; A Distillation Approach to Refining Learning Objects; Proceedings of 2010 Educational Data Mining Conference; 2 pages; 2010.

  20. H. Jung and R. Cohen; A Model for Reasoning About Interaction with Users in Dynamic, Time-Critical Environments for the Application of Hospital Decision Making; Proceedings of 2010 Canadian Artificial Intelligence Conference (AI 2010); 4 pages; 2010.

  21. J. Champaign and R. Cohen; A Model for Content Sequencing in Intelligent Tutoring Systems Based on the Ecological Approach and Its Validation Through Simulated Students; Proceedings of 23rd FLAIRS Conference Special Track on Intelligent Tutoring Systems; 6 pages; 2010.

  22. U. Minhas, J. Zhang, T. Tran and R. Cohen; Promoting Effective Exchanges Between Vehicular Agents in Traffic Through Transportation-Oriented Trust Modeling; Proceedings of AAMAS 2010 Workshop on Agents in Traffic and Transportation; 10 pages; 2010.

  23. J. Champaign and R. Cohen; A Multiagent, Ecological Approach to Content Sequencing; Proceedings of AAMAS 2010 Workshop on Multiagent Systems for Education; 6 pages; 2010.

  24. J. Gorner and R. Cohen; Optimizing Advisor Network Size in a Personalized Trust-Modeling Framework for Multi-Agent Systems; Proceedings of AAMAS 2010 Workshop on Trust in Agent Socieites; 12 pages; 2010.

  25. Fung, J. Zhang, I. Aib, R. Cohen and R. Boutaba; Design of a Simulation Framework to Evaluate Trust Models for Collaborative Intrusion Detection; Proceedings of International Conference on Network and Service Security; 5 pages; 2009.

  26. O. Baysal, M. Godfrey and R. Cohen; A Bug You Like: A Framework for Automated Assignment of Bugs; Proceedings of 17th IEEE Conference on Program Comprehension; 2 pages; 2009.

  27. G. Kastidou, R. Cohen and K. Larson; A Graph-Based Approach for Promoting Honesty in Community-Based Multiagent Systems; IJCAI09 workshop on Coordination, Organizations, Institutions and Norms (COINS); 15 pages; 2009.

  28. G. Kastidou, K. Larson and R. Cohen; Exchanging Reputation Information Between Communities: A Payment Function Approach; Proceedings of IJCAI09; 8 pages; 2009.

  29. R. Kerr and R. Cohen; An Experimental Testbed for Evaluation of Trust and Reputation Systems; Proceedings of Third IFIP WG11.11 International Conference on Trust Management (IFIPTM09); 16 pages; 2009.

  30. R. Kerr and R. Cohen; Smart Cheaters Do Prosper: Defeating Trust and Reputation Systems; Proceedings of AAMAS09; 8 pages; 2009.

  31. F. Song, R. Cohen and S. Lin; Web People Search Based on Locality and Relative Similarity Measures; Proceedings of WePS-2 workshop; WWW2009 Conference; 5 pages; 2009.

  32. G. Kastidou and R. Cohen; Improving the Performance of Electronic Communities by Sharing Reputation Ratings of Users; Grace Murray Hopper Conference; October 2008; 4 pages.

  33. Zhang, J., Sensoy, M. and Cohen, R.; A Detailed Comparison of Probabilistic Approaches for Coping with Unfair Ratings in Trust and Reputation Systems; Sixth Annual Conference on Privacy, Security and Trust (PST08) ; 2008 (12 pages)

  34. Zhang, J. and Cohen, R.; Seller Bidding in a Trust-based Incentive Mechanism for Dynamic E-marketplaces; Canadian Conference on Artificial Intelligence (AI08); 2008 (12 pages)

  35. Zhang, J., Larson, K. and Cohen, R.; Theoretical Validation and Extended Experimental Support for a Trust-Based Incentive Mechanism for E-Marketplaces; Conference on Autonomous Agents and Multiagent Systems (AAMAS08) Workshop on Trust in Agent Societies; 2008 (10 pages)

  36. Seth, A., Zhang, J. and Cohen, R.; A Multi-Disciplinary Approach for Recommending Weblog Messages; National Conference on Artificial Intelligence (AAAI08) Workshop on Enhanced Messaging; 2008 (6 pages)

  37. Seth, A., Zhang, J. and Cohen, R.; A Subjective Credibility Model for Participatory Media; National Conference on Artificial Intelligence (AAAI08) Workshop on on Intelligent Techniques for Web Personalization & Recommender Systems; 2008 (12 pages)

  38. Kastidou, G. and Cohen, R.; Trust-Oriented Utility-Based Community Structure in Multiagent Systems; Workshop on Economic Models for Distributed Systems, SIGAPP Mardigras Conference, January 2008 (10 pages).

  39. Li, J., Cercone, N. and Cohen R.; Addressing missing attributes during data mining using frequent itemsets and rough set based predictions; IEEE International Conference on Granular Computing; November 2007 (7 pages).

  40. Zhang, J. and Cohen R.; Design of a Mechanism for Promoting Honesty in E-Marketplaces; Twenty-second national conference on Artificial Intelligence (AAAI07); July 2007 (6 pages).

  41. Kerr, R. and Cohen, R.; Guaranteed Security in Trust and Reputation Systems; AAMAS07 workshop on Trust in in Agent Societies; May 2007 (11 pages).

  42. Zhang, J. and Cohen R.; Towards More Effective E-Marketplaces: A Novel Incentive Mechanism; AAMAS07 workshop on Trust in in Agent Societies; May 2007 (12 pages).

  43. Zhang, J. and Cohen R.; An Incentive Mechanism for Eliciting Fair Ratings of Sellers in E-Marketplaces; Proceedings of AAMAS07; May 2007 (3 pages).

  44. Kerr, R. and Cohen, R.; Towards Provably Secure Trust and Reputation Systems in E-Marketplaces; Proceedings of AAMAS07; May 2007 (3 pages).

  45. Zhang, J. and Cohen R; Engendering Trust in Buying and Selling Agents by Discouraging the Reporting of Unfair Ratings; AAAI Spring Symposium on Interaction Challenges for Artificial Assistants; March 2007 (8 pages).

  46. Kerr, R. and Cohen, R.; Modeling Trust Using Transactional, Numerical Units; Proceedings of International Conference on Privacy, Security and Trust PST 2006, October 2006 (11 pages).

  47. Zhang, J., Ghorbani, A. and Cohen R; An Improved Familiarity Measurement for Formalization of Trust in E-Commerce Based Multiagent Systems; PST 2006, October 2006 (10 pages).

  48. Zhang, J. and Cohen R; Trusting Advice from Other Buyers in E-Marketplaces: The Problem of Unfair Ratings; International Conference on Electronic Commerce 2006, August 2006, (10 pages)

  49. Regan, K., Poupart, P. and Cohen, R.; Bayesian Repuation Modeling in E-Marketplaces Sensitive to Subjectivity, Deception and Change; AAAI06, July 2006 (6 pages)

  50. Caine, A. and Cohen, R.; MITS: A Mixed-Initiative Intelligent Tutoring System for Sudoku; Canadian Artificial Intelligence Conference (AI06), (12 pages).

  51. Cheng, M. and Cohen, R.; Integrating information gathering interaction into transfer of control strategies in adjustable autonomy multiagent systems; Canadian Artificial Intelligence Conference (AI06); June 2006 (12 pages).

  52. Zhang, J. and Cohen R; A Trust Model for Sharing Ratings of Information Providers on the Semantic Web; Canadian Semantic Web Working Symposium; (13 pages).

  53. Kastidou, G. and Cohen, R.; An approach for delivering personalized ads in interactive TV customized to both users and advertisers; EuroiTV Conference; May 2006 (10 pages).

  54. Kerr, R. and Cohen, R.; Trunits: A Monetary Approch to Modeling Trust in Electronic Marketplaces; AAMAS06 workshop on Trust in Multiagent Systems; May 2006 (11 pages).

  55. Zhang, J. and Cohen R; A Personalized Approach to Address Unfair Ratings in Multiagent Reputation Systems; AAMAS06 workshop on Trust in Multiagent Systems; May 2006 (10 pages).

  56. Chodos, D. and Cohen, R.; A methodology combining email and web pages for announcing research opportunities to researchers at a university; SIGMIS-CPR2006 conference; April 2006 (12 pages).

  57. Cohen, R., Cheng, M. and Fleming, M.; Why bother about bother: Is it worth it to ask the user?; AAAI05 Fall Symposium on Mixed-Initiative Systems; November 2005 (8 pages).

  58. Regan, K., Cohen, R. and Poupart, P.; The Advisor POMDP: A Principled Approach to Trust Through Reputation in Electronic Markets; Best Student Paper Award: Proceedings of Privacy, Security and Trust Conference 2005; November 2005 (10 pages).

  59. Cheng, M. and Cohen, R.; Reasoning about interaction in a multi-user system; User Modeling 2005 Conference; July 2005 (11 pages).

  60. Regan, K., Tran, T. and Cohen, R.; Sharing models of sellers amongst buying agents in electronic marketplaces; DASUM workshop at User Modeling 2005 Conference; July 2005 (6 pages).

  61. Cheng, M. and Cohen, R.; A hybrid transfer of control model for adjustable autonomy multiagent systems; Autonomous Agents and Multi-Agent Systems Conference (AAMAS) 2005; July 2005; (4 pages).

  62. Cheng, M., Micacchi, C. and Cohen, R; Adjusting the autonomy of collections of agents in multiagent systems; AI 2005 Conference; May 2005 (5 pages).

  63. Regan, K. and Cohen, R.; Indirect reputation assessment for adaptive buying agents in electronic markets; Baseweb workshop at AI 2005 Conference; May 2005 (11 pages).

  64. Tran, T. and Cohen, R.; Improving user satisfaction in agent-based electronic marketplaces by reputation modelling and adjustable product quality; Proceedings of the Autonomous Agents and Multi-Agent Systems Conference (AAMAS) 2004; July 2004, p. 828-835.

  65. Micacchi, C. and Cohen, R.; An architecture for managing teams of agents operating in soft real-time environments with unexpected events; AAMAS04 workshop on Coalitions and Teams; July 2004 (8 pages).

  66. Tran, T. and Cohen, R.; The macro behaviour of e-marketplaces based on reputation modelling; Proceedings of Baseweb04 workshop, held at AI04; May 2004, p.21-30.

  67. Micacchi, C. and Cohen, R.; A multi-agent architecture for systems operating in real-time environments; AI04 workshop on agents meets robotics; May 2004, p.27-32.

  68. Fleming, M. and Cohen, R.; A decision procedure for autonomous agents to reason about interaction with humans; AAAI04 Spring Symposium on interaction between humans and autonomous systems over extended operation; March 2004, p.81-86.

  69. Fleming, M. and Cohen, R.; Reasoning about interaction in mixed-initiative AI systems; IJCAI03 workshop on mixed-initiative intelligent systems; August 2003 (10 pages).

  70. Tran, T. and Cohen, R.; Learning algorithms for software agents in uncertain and untrusted market environments; Proceedings of IJCAI03; August 2003, p. 1475-1476.

  71. Tran, T. and Cohen, R.; Modelling reputation in agent-based marketplaces to improve the performance of buying agents; Proceedings of UM03; June 2003, p. 273-282.

  72. Dai, W. and Cohen, R.; Dynamic personalized TV recommendation system; Proceedings of UM03 workshop on Personalization in Future TV; June 2003 (10 pages).

  73. Tran, T. and Cohen, R.; A strategy for improved satisfaction of selling software agents in e-commerce; Proceedings of AI03; June 2003, p.434-446.

  74. Cohen, R.; Safeguarding user privacy in the context of personal digital assistants; CSCW2002 workshop on privacy in digital environments: empowering users; November 2002 (4 pages).

  75. Tran, T. and Cohen, R.; A learning algorithm for agents in electronic marketplaces; AAAI02 workshop on multi-agent modeling and simulation of economic systems; August 2002, p.31-43.

  76. Chen, D. and Cohen, R.; AERO: an outsourced approach to exception handling in multi-agent systems; Proceedings of AI02; May 2002, p.16-30.

  77. Tran, T. and Cohen, R.; A learning algorithm for buying and selling agents in electronic marketplaces; Proceedings of AI02; May 2002, p.31-43.

  78. Fleming, M. and Cohen, R.; A utility-based theory of initiative in mixed-initiative systems; IJCAI01 workshop on autonomy, delegation and control: interacting with autonomous agents; August 2001, p.58-65.

  79. Chen, D. and Cohen, R.; Outsourced exception handling for agent systems; IJCAI01 workshop on autonomy, delegation and control: interacting with autonomous agents; August 2001 (8 pages).

  80. Tran, T. and Cohen, R.; A learning strategy for economically-motivated agents in market environments; IJCAI01 workshop on knowledge discovery from distributed, dynamic, heterogeneous, autonomous sources; August 2001, p.51-56.

  81. Fleming, M. and Cohen, R.; A user modeling approach to determining system initiative in mixed-initiative AI systems; Proceedings of User Modeling 2001 conference; July 2001, p.54-63.

  82. Fleming, M. and Cohen, R.; Dialogue as decision making under uncertainty: the case of mixed-initiative AI systems; North American Computational Linguistics workshop on adaptation in dialogue systems (NAACL01); June 2001 (2 pages).

  83. Cohen, R., Vanderheyden, P., Fleming, M. and Cartmill, C.; Meeting Users' Information Needs Through Interaction; poster session, Intelligent User Interfaces conference (IUI2001); January 2001.

  84. Fleming, M. and Cohen, R.; Mixed-Initiative Translation of Web Pages; Proceedings of the Association for Machine Translation in the Americas (AMTA2000), ; October 2000, p.25-29.

  85. Vanderheyden, P. and Cohen, R; Interfacing Issues for Information Extraction; Proceedings of AAAI2000 (Student Session); p.1096; July 2000.

  86. Tran, T. and Cohen, R.; Hybrid Recommender Systems for Electronic Commerce; AAAI2000 workshop on Knowledge-Based Electronic Markets; p.78-84; July 2000.

  87. Fleming, M. and Cohen, R.; System Initiative Influenced by Underlying Representations in Mixed-Initiative Planning Systems; AAAI2000 workshop on Representational Issues for Real-World Planning Systems; pp.18-21; July 2000.

  88. Vanderheyden, P. and Cohen, R.; Adaptive User Interfaces for Information Extraction; AAAI2000 Spring Symposium on Adaptive User Interfaces; pp.136-141; March 2000.

  89. Cohen, R. and Fleming, M., Plans underlying mixed-initiative intelligent interfaces; Proceedings of IUI2000 workshop on Using Plans in Intelligent User Interfaces; pp.23-25; January 2000.

  90. Cartmill, C. and Cohen, R.; A Multi-Agent Framework for Facilitating Information Extraction; Proceedings of IJCAI99 workshop on Intelligent Workflow; 5 pgs.; August 1999.

  91. Fleming, M. and Cohen, R; Towards a Methodology for Designing and Evaluating Mixed-Initiative AI Systems; Proceedings of AAAI99 workshop on Mixed-Initiative Intelligence; pp.130-134; July 1999.

  92. Vanderheyden, P. and Cohen, R.; Designing a Mixed-Initiative Information Extraction System; Proceedings of AAAI99 workshop on Mixed-Initiative Intelligence; pp.142-146; July 1999.

  93. Cartmill, C. and Cohen, R.; Insights into the design of middle agent architectures; Proceedings of AAAI99 workshop on Electronic Commerce and AI; p.111-112; July 1999.

  94. Cartmill, C. and Cohen, R.; A multi-agent framework for facilitating information extraction; Proceedings of AAAI99 workshop on Intelligent Information Systems; 3 pgs.; July 1999.

  95. Fleming, M. and Cohen, R.; User modeling and the design of more interactive interfaces; UM99 conference; pp.67-76; May 1999.

  96. Vanderheyden, P. and Cohen, R.; A Dynamic Interface for a Dynamic Task: Information Extraction and Evolving Queries; AAAI Spring Symposium on Autonomous Agents with Adjustable Autonomy; pp.120-123; March 1999.

  97. Vanderheyden, P. and Cohen, R.; Information extraction and the casual user; AAAI98 workshop on information integration; pp.137-142; July 1998.

  98. Fleming, M. and Cohen, R.; Interactive interface agents as recommender systems; AAAI98 workshop on recommender systems; pp.42-46; July 1998.

  99. Fleming, M. and Cohen, R.; Designing more interactive interface agents; AAAI98 workshop on software agent tools; Madison, WI: pp.125-126; 1998.

  100. Donaldson, T. and Cohen, R.; Planning the next action with constraints; Proceedings of AI98 (Canadian AI conference); 7 pgs.; May 1998.

  101. Fleming, M. and Cohen, R.; User modeling and the design of more interactive interfaces; UM99 conference; (May 1999).

  102. Vanderheyden, P. and Cohen, R.; A Dynamic Interface for a Dynamic Task: Information Extraction and Evolving Queries; AAAI Spring Symposium on Autonomous Agents with Adjustable Autonomy; Stanford, CA.; March 1999.

  103. Vanderheyden, P. and Cohen, R.; Information extraction and the casual user; AAAI98 workshop on information integration; Madison, WI; 1998.

  104. Fleming, M. and Cohen, R.; Interactive interface agents as recommender systems; AAAI98 workshop on recommender systems; Madison, WI; 1998.

  105. Fleming, M. and Cohen, R.; Designing more interactive interface agents; AAAI98 workshop on software agent tools; Madison, WI: 1998.

  106. Donaldson, T. and Cohen, R.; Planning the next action with constraints; Proceedings of AI98 (Canadian AI conference); Vancouver, B.C.; 1998.

  107. Donaldson, T. and Cohen, R.; Constraint-based discourse agents; AAAI97 workshop on constraints and agents; July 1997.

  108. Donaldson, T. and Cohen, R.; Computer-generated dialog as a resource-bounded activity; AAAI97 workshop on resource-bounded processing; July 1997.

  109. Donaldson, T. and Cohen, R.; A constraint satisfaction framework for managing mixed-initiative discourse; AAAI97 Spring symposium on mixed-initiative interaction; March 1997.

  110. Donaldson, T. and Cohen, R.; Turn-taking in discourse and its application to the design of intelligent agents; AAAI96 workshop on intelligent agents. Portland, Oregon; August 1996.

  111. Donaldson, T., Makuta, M. and R. Cohen; An integrated approach to evaluating text coherence and its application to the prevention of reader misconceptions (or the joy of detecting incoherence in text); AAAI96 workshop on miscommunication in discourse. Portland, Oregon; August 1996.

  112. Donaldson, T. and Cohen, R.; Addressing user misconceptions within a goal-oriented, turn-taking framework for dialogue; AAAI96 workshop on miscommunication in discourse. Portland, Oregon; August 1996.

  113. Ardissono, L. and Cohen, R.; Extending the role of user feedback in plan recognition and response generation for advice-giving systems: an initial report; Proceedings of AI96; Toronto, Ontario; May 1996.

  114. Song, F. and Cohen, R.; Improving heuristic-based temporal analysis of narratives with aspect determination; Proceedings of International Joint Conference on Artificial Intelligence (IJCAI) 1995; Montreal, Quebec; August 1995.

  115. Ardissono, L. and Cohen, R.; On the value of user modeling for improving plan recognition; IJCAI95 workshop on the next generation of plan recognition systems; Montreal, Quebec; August 1995.

  116. Cohen, R., Spencer, B. and P. Hoyt; Designing a tool to allow updates during plan recognition - challenges and applications; Proceedings of 6th international conference on Tools with Artificial Intelligence (TAI '94), November 1994.

  117. Cohen, R.; Discussion group on a self-directed study version of an AI course; AAAI Fall Symposium on teaching introductory AI, November 1994.

  118. Cohen, R., Schmidt, K. and P. van Beek; Relevance in plan recognition for advice-giving systems; Proceedings of AAAI Fall Symposium on Relevance, November 1994.

  119. Cohen, R., Schmidt, K. and P. van Beek; A framework for soliciting clarification from users during plan recognition; Proceedings of User Modeling conference 1994, August 1994.

  120. Spencer, B. and Cohen, R.; A Non-Horn ATMS which allows flexible specification of required completeness; Proceedings of CSCSI 94, May 1994.

  121. Cohen, L. and Cohen, R.; Electronic mail: changing communication within the academic setting; Canadian Psychological Association convention, May 1993.

  122. Cohen,R. and Spencer, B.; Specifying and updating plan libraries for plan recognition; Proceedings of 9th IEEE conference on AI applications (CAIA), March 1993.

  123. van Beek, P., Cohen, R. and K. Schmidt; Towards Building a Cooperative Advice-Giving System; AAAI Spring Symposium on Producing Cooperative Explanations, Stanford, CA, March 1992.

  124. Chu, J. and Cohen, R.; TailoringNatural Language Generation by User Model Attributes; 4th International Symposium on Artificial Intelligence; Cancun, Mexico, November 1991.

  125. van Beek, P. and Cohen, R.; Resolving Plan Ambiguity for Cooperative Response Generation; Proceedings of IJCAI91, August 1991.

  126. Song, F. and Cohen, R.; Tense Interpretation in the Context of Narrative; Proceedings of AAAI91, July 1991.

  127. Song, F. and Cohen, R.; Temporal Reasoning during Plan Recognition; Proceedings of AAAI91, July 1991.

  128. Cohen, R.; In Search of Practical Specifications - Allowing the User a More Active Role; AAAI91 Spring Symposium on Implemented KR and Reasoning Systems, March 1991.

  129. Cohen, R.; Evaluating Criteria for Natural Language Generation Systems - What must be included and what must be avoided; AAAI90 workshop on evaluating Generation Systems; July 1990.

  130. van Beek, P. and Cohen, R.; Resolving Plan Ambiguity for Response Generation; Fifth international workshop on Natural Language Generation; June 1990.

  131. Cohen, R., Song, F., Spencer, B. and P. van Beek; Plan Recognition Beyond Fixed Plan Libraries; Second international workshop on User Modeling; March 1990.

  132. Cohen, R.; Dimensions of User Modeling for Disambiguating Complex Input; International Joint Conference on Artificial Intelligence (IJCAI) workshop on Intelligent Interfaces: August 1989.

  133. Cohen, R. and Spencer, B.; Research Interests in Plan Recognition: Assimilating Novel Plans; International Joint Conference on Artificial Intelligence (IJCAI) workshop on plan recognition; August 1989.

  134. Cohen, R.; Recognizing Plans in Discourse; American Association for Artificial Intelligence (AAAI) workshop on Plan Recognition; St. Paul, Minnesota; August 1988.

  135. Cohen, R.; Producing User-Specific Explanations; American Association for Artificial Intelligence (AAAI) workshop on explanation; St. Paul, Minnesota; August 1988.

  136. Song, F. and Cohen, R.; The Interpretation of Temporal Relations in Narrative, Proceedings of American Association of Artificial Intelligence (AAAI) 1988 conference, St. Paul, Minnesota, August 1988.

  137. Young, M. and Cohen, R.; An Evidence Oracle for Argument Understanding; Proceedings of Canadian society for Computational Studies of Intelligence (CSCSI) 1988 conference; Edmonton, Alberta; May 1988.

  138. Cohen, R.; Interpreting Clues in Conjunction with Processing Restrictions in Arguments and Discourse; Proceedings of the American Association for Artificial Intelligence (AAAI) 1987 conference; May 1987.

  139. van Beek, P. and Cohen, R.; Towards User-Specific Explanations from Expert Systems; Proceedings of Canadian Society for Computational Studies of Intelligence (CSCSI) 1986 conference; May 1986.

  140. Cohen, R.; The Need for Pragmatics in Natural Language Understanding; Proceedings of CSCSI-sponsored Theoretical Advances in Natural Language Understanding; May 1985.

  141. Cohen, R.; A Computational Theory of the Function of Clue Words in Argument Understanding; Proceedings of International Computational Linguistics Society (COLING) 1984 conference; June 1984.

  142. Cohen, R.; A Theory of Discourse Coherence for Argument Understanding; Proceedings of Canadian Society for Computational Studies of Intelligence (CSCSI) 1984 conference; May 1984.

  143. Cohen, R.; Investigation of Processing Strategies for the Structural Analysis of Arguments; Proceedings of ACL(Association for Computational Linguistics) Conference 1981; June 1981.

  144. Cohen, R.; Understanding Arguments; Proceedings of CSCSI (Canadian AI Society) Conference 1980; May 1980.