— We study how an online community perceives the relative quality of its own user-contributed content, which has important implications for the successful self-regulation and gro...
Community QA portals provide an important resource for non-factoid question-answering. The inherent noisiness of user-generated data makes the identification of high-quality cont...
Graph representations of data are increasingly common. Such representations arise in a variety of applications, including computational biology, social network analysis, web applic...
Social content sites [4], which integrate traditional content sites with social networking features, have recently emerged as an exciting new trend on the Web. Users on those site...
Online popularity has enormous impact on opinions, culture, policy, and profits, especially with the advent of the social Web and Web advertising. Yet the processes that drive popu...
Jacob Ratkiewicz, Filippo Menczer, Santo Fortunato...