Exploring question subjectivity prediction in community QA

Authors:
Baoli Li;Yandong Liu;Ashwin Ram;Ernest V. Garcia;Eugene Agichtein
Affiliations:
Emory University, Atlanta, GA, USA;Emory University, Atlanta, GA, USA;Georgia Institute of Technology, Atlanta, GA, USA;Emory University, Atlanta, GA, USA;Emory University, Atlanta, GA, USA
Venue:
Proceedings of the 31st annual international ACM SIGIR conference on Research and development in information retrieval
Year:
2008

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Abstract

In this paper we begin to investigate how to automatically determine the subjectivity orientation of questions posted by real users in community question answering (CQA) portals. Subjective questions seek answers containing private states, such as personal opinion and experience. In contrast, objective questions request objective, verifiable information, often with support from reliable sources. Knowing the question orientation would be helpful not only for evaluating answers provided by users, but also for guiding the CQA engine to process questions more intelligently. Our experiments on Yahoo! Answers data show that our method exhibits promising performance.