Journal Papers

  • Chen Hajaj, Noam Hazon and David Sarne, Improving Comparison Shopping Agents’ Competence through Selective Price Disclosure, Electronic Commerce Research Chen Hajajand Applications (ECRA). (PDF, bib)

     

  • Chen Hajaj, Noam Hazon and David Sarne, Enhancing Comparison Shopping Agents through Ordering and Gradual Information Disclosure, to appear in Autonomous Agents and Multi-Agent Systems (JAAMAS). (PDF)

     

  • Chen Hajaj and David Sarne, Selective Opportunity Disclosure at the Service of Strategic Information Platforms, to appear in Autonomous Agents and Multi-Agent Systems (JAAMAS). (PDF, bib)
 
 

Papers in Refereed Conferences

  • Liang Tong, Bo Li, Chen Hajaj, Chaowei Xiao, Ning Zhang, Yevgeniy Vorobeychik. Improving Robustness of ML Classifiers against Realizable, Evasion Attacks Using Conserved Feature. In the 28th USENIX Security Symposium (USENIX Security ’19 Winter)(PDF)

     

  • Yevgeniy Vorobeychik, Myrna Wooders, Greg Leo, Matthew Chambers, Chen Hajaj, Jian Lou, and Martin Van der Linden. Non-Cooperative Team Formation and a Team Formation Mechanism. In the 11th annual conference of the Israeli chapter of the game theory society.

  • Chen Hajaj, Sixie Yu, Zlatko Joveski, Yifan Guo, and Yevgeniy Vorobeychik. Adversarial Coordination on Social Networks. In the International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2019)(PDF)

     

  • Cheng Ye, Joseph Coco, Anna Epishova, Chen Hajaj, Henry Bogardus, Laurie Novak, Joshua Denny, Yevgeniy Vorobeychik, Thomas Lasko, Bradley Malin, and Daniel Fabbri. Crowdsourcing Clinical Chart Reviews. In AMIA Joint Summits on Translational Science (AMIA 2018)(PDF)

     

  • Chen Hajaj and Yevgeniy Vorobeychik. Adversarial Task Assignment. In International Joint Conference on Artificial Intelligence and European Conference on Artificial Intelligence (IJCAI-ECAI 2018) (PDF)

     

  • Cheng Ye, Joseph Coco, Anna Epishova, Chen Hajaj, Henry Bogardus, Laurie Novak, Joshua Denny, Yevgeniy Vorobeychik, Thomas Lasko, Bradley Malin, and Daniel Fabbri. A Crowdsourcing Framework for Medical Data Sets. In American Medical Informatics Association (AMIA 2018).(PDF)

     

  • Avshalom Elmalech, David Sarne, Esther David, and Chen Hajaj. Enhancing Crowdworkers’ Vigilance. In International Joint Conference on Artificial Intelligence (IJCAI 2017).(PDF)

     

  • Avshalom Elmalech, David Sarne, Esther David, and Chen Hajaj, Extending Workers’ Attention Span Through Dummy Sub-Goals, In proceedings of The Fourth AAAI Conference on Human Computation and Crowdsourcing (HCOMP 2016). Best paper finalist (PDF)

     

  • Chen Hajaj, John P. Dickerson,  Avinatan Hassidim, Tuomas Sandholm, and David Sarne, Strategy-Proof and Efficient Kidney Exchange Using a Credit Mechanism, In Proceedings of the Twenty-Ninth AAAI Conference on Artificial Intelligence (AAAI 2015). (PDFbib)

     

  • Tal Darom, Yaniv Gur, Chen Hajaj and Yosi Keller, Automatic Anatomical Shape Correspondence and Alignment Using Mesh Features, In Proceedings of International Symposium on Biomedical Imaging (ISBI 2015).(PDF)

     

  • Chen Hajaj, Noam Hazon and David Sarne, Ordering Effects and Belief Adjustment in the Use of Comparison Shopping Agents, In Proceedings of the Twenty-Eighth AAAI Conference on Artificial Intelligence (AAAI 2014). (PDFbib)

     

  • Chen Hajaj and David Sarne, Strategic Information Platforms – Selective Disclosure and The Price of “Free”, In Proceeding of The Fifteenth ACM Conference on Economics and Computation (EC 2014). (PDFbib)

     

  • Chen Hajaj, Noam Hazon, David Sarne, and Avshalom Elmalech, Search More, Disclose Less, In Proceedings of the Twenty-Seventh AAAI Conference on Artificial Intelligence (AAAI 2013). (PDFbib)
 
 

Short Paper and Referred Workshops

  • Chen Hajaj, and Yevgeniy Vorobeychik. Adversarial Randomized Task Assignment. In The 6th Day on Computational Game Theory

     

  • Chen Hajaj, Sixie Yu, Zlatko Joveski and Yevgeniy Vorobeychik. Adversarial Coordination on Social Networks. In The AAMAS-IJCAI workshop on agents and incentives in artificial intelligence (AI^3)

     

  • Jian Lou, Chen Hajaj, Myrna Wooders, and Yevgeniy Vorobeychik. Automated Mechanism Design for the Roommates Problem. In The AAMAS-IJCAI workshop on agents and incentives in artificial intelligence (AI^3)

     

  • Jian Lou, Martin Van der Linden, Pranav Batra, Chen Hajaj, Greg Leo, Yevgeniy Vorobeychik and Myrna Wooders. Rotating Proposer Mechanisms for Team Formation. In Workshop on Cooperative Games in Multiagent Systems (CoopMAS 2017). Most visionary paper.

     

  • Chen Hajaj, David Sarne and Lea Perets, Advanced Service Schemes for a Self-Interested Information Platform, In Proceedings of the Thirteenth International Conference on Autonomous Agents and Multiagent Systems (AAMAS 2014). (PDFbib)