Evolution of experts in question answering communities

Aditya Pal, Shuo Chang, Joseph A Konstan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

70 Scopus citations

Abstract

Community Question Answering (CQA) services thrive as a result of a small number of highly active users, typically called experts, who provide a large number of high quality useful answers. Understanding the temporal dynamics and interactions between experts can present key insights into how community members evolve over time. In this paper, we present a temporal study of experts in CQA and analyze the changes in their behavioral patterns over time. Further, using unsupervised machine learning methods, we show the interesting evolution patterns that can help us distinguish experts from one another. Using supervised classification methods, we show that the models based on evolutionary data of users can be more effective at expert identification than the models that ignore evolution. We run our experiments on two large online CQA to show the generality of our proposed approach.

Original languageEnglish (US)
Title of host publicationICWSM 2012 - Proceedings of the 6th International AAAI Conference on Weblogs and Social Media
Pages274-281
Number of pages8
StatePublished - Dec 1 2012
Event6th International AAAI Conference on Weblogs and Social Media, ICWSM 2012 - Dublin, Ireland
Duration: Jun 4 2012Jun 7 2012

Publication series

NameICWSM 2012 - Proceedings of the 6th International AAAI Conference on Weblogs and Social Media

Other

Other6th International AAAI Conference on Weblogs and Social Media, ICWSM 2012
CountryIreland
CityDublin
Period6/4/126/7/12

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