Models and Algorithms for Online Collaborative Systems

Lecturer : 
Professor Aris Anagnostopoulos, Sapienza University of Rome
Event type: 
HIIT seminar
Event time: 
2013-06-13 13:15 to 14:00
Aalto University, Computer Science Building, lecture hall T2

In the last years we have observed the emergence of a variety of systems where users communicate and collaborate online and produce knowledge or provide new services. Success stories include Wikipedia, Linux and the open source community, games with a purpose, crowdsourcing services, online labor marketplaces, and car-sharing services, to name a few. This new paradigm, where users collaborate using the Internet for coordination, requires the development of new models and algorithms to capture both the machine and the human elements, and the interactions between them.

In this talk I will start with a high-level presentation of some of these systems and with some of the issues needed to be captured when trying to formally model them. I will then proceed with the presentation of algorithms for the problem of creating online teams of experts, for the problem of assigning tasks to experts in some crowdsourcing systems, and of some experimental results about the "wisdom of crowds." I will conclude with a discussion of challenges for future work.

About the speaker:
Aris Anagnostopoulos is an assistant professor at the Sapienza University of Rome. He obtained his Ph.D. from Brown University in 2006, and afterwards he did a postdoc at Yahoo! Research in Silicon Valley. His main research interests include randomized and approximation algorithms and their applications on data mining, social networks, and web search.


Last updated on 10 Jun 2013 by Antti Ukkonen - Page created on 10 Jun 2013 by Antti Ukkonen