Predicting best answerers for new questions in community question answering

  • Authors:

  • Mingrong Liu;Yicen Liu;Qing Yang

  • Affiliations:

  • National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China;National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China;National Laboratory of Pattern Recognition, Institute of Automation, Chinese Academy of Sciences, Beijing, China

  • Venue:
  • WAIM'10 Proceedings of the 11th international conference on Web-age information management
  • Year:
  • 2010

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Abstract

Community question answering (CQA) has become a very popular web service to provide a platform for people to share knowledge. In current CQA services, askers post their questions to the system and wait for answerers to answer them passively. This procedure leads to several drawbacks. Since new questions are presented to all users in the system, the askers can not expect some experts to answer their questions. Meanwhile, answerers have to visit many questions and then pick out only a small part of them to answer. To overcome those drawbacks, a probabilistic framework is proposed to predict best answerers for new questions. By tracking answerers' answering history, interests of answerers are modeled with the mixture of the Language Model and the Latent Dirichlet Allocation model. User activity and authority information is also taken into consideration. Experimental results show the proposed method can effectively push new questions to the best answerers.