The Homepage of Eran Toch
Home Curriculum Vitae Publications Teaching Hebrew Research Group »

About Me

Picture of Eran Toch, Tel Aviv University

I am a faculty member at the Department of Industrial Engineering, The Iby and Aladar Fleischman Faculty of Engineering , Tel Aviv University.

Previously I was at Carnegie Mellon University and beforehand I was a Ph.D. student at the Technion - Israel Institute of Technology.

My research interests include:

  • Human-Computer Interaction: AI methods for HCI, usable privacy and security, social networks usability
  • Privacy: Information privacy, privacy in social networks, location-related privacy, privacy policy semantics
  • Information systems theory: Formal semantics and ontology, algorithms for approximate inference, cognitive models of information system usage
  • Web: Semantic Web, Web service composition, information retrieval

You can reach me at:

Phone: +972-3-640-6978

My twitter feed is a good way to keep in touch

Personal Links


: Smartphone’s Influence on Cognitive Perceptions of Public Space. Co-PI: Dr. Tali Hatuka.

: Privacy in Location-Sharing Applications.

: Semantic Search Engine for Web Services. 1st prize for performance, S3 Contest, 2009.
Previous projects:

Liquid-Interface: Usable UI generation from service compositions

OPCAT: Object-Process Methodology CASE tool

QSIA: Collaborative e-learning and knowledge sharing

Selected Publications

Journal Papers

Eran Toch, Yang Wang, and Lorrie Faith Cranor, Personalization and Privacy. Accepted to the User Modeling and User-Adapted Interaction (UMUAI), 2011

Eran Toch, Iris Reinhartz-Berger, Dov Dori, Humans, Semantics Services and Similarity: A User Study of Semantic Web Services Matching and Composition. Journal of Web Semantics, vol. 9, no. 1, pp. 16-28, 2011. Download, Info

Eran Toch, Avigdor Gal, Aviv Segev, Context-Based Matching and Ranking of Web Services for Composition. IEEE Transactions on Services Computing, vol. 99, no. 1, pp. 210 - 222, 2009. Download

Eran Toch, Avigdor Gal, Iris Reinhartz-Berger, and Dov Dori, A Semantic Approach to Approximate Service Retrieval. ACM Transactions on Internet Technology, Vol. 8, No. 1, pp. 2:1-2:30, November 2007. Download, Info

Sheizaf Rafaeli, Miri Barak, Yuval Dan-Gur, and Eran Toch, QSIA - A Web-Based Environment for Learning, Assessing and Knowledge Sharing in Communities. Computers and Education, Volume 43 , Issue 3 (November 2004), pp. 273 - 289. Download, Info

Peer Reviewed Conference Papers

Eran Toch Super-Ego: a framework for privacy-sensitive bounded context-awareness. Proceedings of the 5th ACM International Workshop on Context-Awareness for Self-Managing Systems (CASEMANS '11), 2011. Best paper award Download, Info

Vassilis Kostakos, Jayant Venkatanathan, Bernardo Reynolds, Norman Sadeh, Eran Toch, Siraj A. Shaikh, and Simon Jones, Who's your best friend?: targeted privacy attacks In location-sharing social networks. Proceedings of the 13th international conference on Ubiquitous computing (UbiComp '11), pp. 177-186, 2011 Download, Info

Eran Toch, Justin Cranshaw, Paul Hankes Drielsma, Janice Y. Tsai, Patrick Gage Kelley, James Springfield, Lorrie Cranor, Jason Hong, and Norman Sadeh, Empirical models of privacy in location sharing. Proceedings of the 12th ACM international conference on Ubiquitous computing, pp. 129-138 , 2010. Download, Info

Justin Cranshaw, Eran Toch, Jason Hong, Aniket Kittur, and Norman Sadeh, Bridging the Gap between Physical Location and Online Social Networks. Proceedings of the 12th ACM international conference on Ubiquitous computing, pp. 119-128, 2010. Download, Info

Eran Toch, Jason Hong, and Norman Sadeh. Generating Default Privacy Policies for Online Social Networks. International Conference on Human Factors in Computing Systems (CHI 2010), work-in-progress track, April 2010. Download, Info

Eran Toch, Iris Reinhartz-Berger, Avigdor Gal, and Dov Dori. Generating and optimizing graphical user interfaces for semantic service composition. Conceptual Modeling - ER 2008, volume 5231 of Lecture Notes in Computer Science. Springer, October 2008, pages 528–529. Download

Eran Toch, Avigdor Gal and Dov Dori, Automatically Grounding Semantically-enriched Conceptual Models to Concrete Web Services, Proceedings of the International Conference on Conceptual Modeling (ER), October 2005, pp. 304-319, ©Springer-Verlag Berlin Heidelberg 2005. Download

Dov Dori, Eran Toch, and Iris Reinhartz-Berger, Modeling Semantic Web Services with OPM/S – A Human and Machine-Interpretable Language, Third International Workshop on Web Dynamics, WWW 2004, New York, May 18, 2004. Download

Dov Dori, Dizza Beimel, and Eran Toch, OPCATeam – Collaborative Business Process Modeling with OPM. In J.Desel, B. Pernici, and M. Weske (Eds.): BPM 2004, LNCS 3080, pp.66–81, 2004. ©Springer-Verlag Berlin Heidelberg 2004 Download

Rafaeli, S., Barak, M. Dan-Gur, Y. and Toch E., Knowledge Sharing and Online Assessment, Proceedings of the 2003 IADIS conference IADIS e-Society 2003 pp. 257-266. MS- Word Download


Eran Toch, Approximate Service Retrieval, Ph.D. Thesis. Download