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Dual role model for question recommendation in community question answering

Published: 12 August 2012 Publication History

Abstract

Question recommendation that automatically recommends a new question to suitable users to answer is an appealing and challenging problem in the research area of Community Question Answering (CQA). Unlike in general recommender systems where a user has only a single role, each user in CQA can play two different roles (dual roles) simultaneously: as an asker and as an answerer. To the best of our knowledge, this paper is the first to systematically investigate the distinctions between the two roles and their different influences on the performance of question recommendation in CQA. Moreover, we propose a Dual Role Model (DRM) to model the dual roles of users effectively. With different indepen-dence assumptions, two variants of DRM are achieved. Finally, we present the DRM based approach to question recommendation which provides a mechanism for naturally integrating the user relation between the answerer and the asker with the content re-levance between the answerer and the question into a uni-fied probabilistic framework. Experiments using a real-world data crawled from Yahoo! Answers show that: (1) there are evident distinctions between the two roles of users in CQA. Additionally, the answerer role is more effective than the asker role for modeling candidate users in question recommendation; (2) compared with baselines utilizing a single role or blended roles based methods, our DRM based approach consistently and significantly improves the performance of question recommendation, demonstrating that our approach can model the user in CQA more reasonably and precisely.

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      cover image ACM Conferences
      SIGIR '12: Proceedings of the 35th international ACM SIGIR conference on Research and development in information retrieval
      August 2012
      1236 pages
      ISBN:9781450314725
      DOI:10.1145/2348283
      Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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      Published: 12 August 2012

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      Author Tags

      1. PLSA
      2. community question answering
      3. dual role model
      4. question recommendation
      5. role analysis

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      • (2023)SE-PEF: a Resource for Personalized Expert FindingProceedings of the Annual International ACM SIGIR Conference on Research and Development in Information Retrieval in the Asia Pacific Region10.1145/3624918.3625335(288-309)Online publication date: 26-Nov-2023
      • (2023) Ask and Ye shall be AnsweredInformation Fusion10.1016/j.inffus.2023.10185699:COnline publication date: 1-Nov-2023
      • (2023)Here are the answers. What is your question? Bayesian collaborative tag-based recommendation of time-sensitive expertise in question-answering communitiesExpert Systems with Applications10.1016/j.eswa.2023.120042225(120042)Online publication date: Sep-2023
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      • (2021)Multi-Relational Graph based Heterogeneous Multi-Task Learning in Community Question AnsweringProceedings of the 30th ACM International Conference on Information & Knowledge Management10.1145/3459637.3482279(1038-1047)Online publication date: 26-Oct-2021
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