Computers - Colloquium
Friday, November 16, 2012
11:00 AM-12:00 PM
Friday, November 16, 2012
11:00 a.m. - 12:00 p.m.
Fuller Labs 320
Recently, online social networking sites have exploded in popularity; numerous sites are dedicated to exchanging end-user generated content, such as photos on Flickr, videos on YouTube, and status updates on Twitter. These sites represent a new type of information system, where links between users (as opposed to links between content items) are the primary manner in which information is structured. But, the enabling of all users to become publishers is resulting in a deluge of data that only makes the fundamental problems of finding relevant content and trustworthy users even harder.
The social networks that these sites are based on, however, offer a potential solution, because the relationships among users in the social network may indicate the relevance of content or the trustworthiness of other users in the network.
In this talk, I discuss two systems that leverage social networks to solve some of the challenges facing information systems. First, I present WebCloud, a system that addresses the challenge of content distribution in online social networks by recruiting individual users to help serve their own content. WebCloud represents the first step towards decentralized content exchange over centralized social networks. Second, I describe Bazaar, a system that strengthens user reputations in online marketplaces.
Bazaar addresses the reputation manipulation that is possible today because accounts on online marketplaces are usually free to obtain. Both of these systems have been evaluated on data from real online social networks or in a deployment with real users.
Alan Mislove is an Assistant Professor at the College of Computer and Information Science at Northeastern University. He received his Ph.D. from Rice University in 2009, and was a postdoctoral researcher at the Max Planck Institute for Software Systems (MPI-SWS) in the summer of 2009.
Prof. Mislove's research concerns distributed systems and networks, with a focus on using social networks to enhance the security, privacy, and efficiency of newly emerging systems. He is a recipient of an NSF CAREER Award (2011), and his work has been covered by the Wall Street Journal, the New York Times, and the CBS Evening News.
Host: Prof. Craig Wills
Refreshments will be served.
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Last Modified: November 14, 2012 at 10:07 AM