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Article: Knowledge-enhanced attentive learning for answer selection in community question answering systems

TitleKnowledge-enhanced attentive learning for answer selection in community question answering systems
Authors
KeywordsAnswer selection
Community question answering
Knowledge discovery
Knowledge graph embedding
Recommender systems
Issue Date2022
Citation
Knowledge-Based Systems, 2022, v. 250, article no. 109117 How to Cite?
AbstractIn a community question-answering (CQA) system, the answer selection task is used to identify the best answer for a specific question. This plays a key role in improving service quality by recommending appropriate answers to new questions. Recent advances in CQA answer selection have focused on enhancing performance by incorporating community information, and particularly the expertise (previous answers) and authority (position in the social network) of a respondent. However, existing approaches to incorporating this information are limited, as they (a) consider either the expertise or the authority, but not both; (b) ignore domain knowledge that could differentiate between the topics of previous answers; or (c) simply use authority information to adjust the similarity score, rather than fully integrating it into the process of measuring the similarity between the question and answer segments. We propose a new approach called the knowledge-enhanced attentive answer selection (KAAS) model, which enhances performance by (a) considering both the expertise and the authority of the answerer; (b) utilizing human-labeled tags, a taxonomy of tags, and votes as domain knowledge to infer the expertise of the respondent; (c) using a matrix decomposition of the social network (based on ‘following’ relationships) to infer the authority of the respondent and incorporating this information into the process of evaluating the similarity between segments. In addition, we incorporate an external knowledge graph to capture more professional information for CQA systems for vertical communities. We also adopt an attention mechanism to integrate our analysis of both questions and answers texts and the aforementioned community information. Experiments with both vertical and general CQA sites demonstrate the superior performance of the proposed KAAS model.
Persistent Identifierhttp://hdl.handle.net/10722/330817
ISSN
2023 Impact Factor: 7.2
2023 SCImago Journal Rankings: 2.219
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorJing, Fengshi-
dc.contributor.authorRen, Hao-
dc.contributor.authorCheng, Weibin-
dc.contributor.authorWang, Xin-
dc.contributor.authorZhang, Qingpeng-
dc.date.accessioned2023-09-05T12:14:52Z-
dc.date.available2023-09-05T12:14:52Z-
dc.date.issued2022-
dc.identifier.citationKnowledge-Based Systems, 2022, v. 250, article no. 109117-
dc.identifier.issn0950-7051-
dc.identifier.urihttp://hdl.handle.net/10722/330817-
dc.description.abstractIn a community question-answering (CQA) system, the answer selection task is used to identify the best answer for a specific question. This plays a key role in improving service quality by recommending appropriate answers to new questions. Recent advances in CQA answer selection have focused on enhancing performance by incorporating community information, and particularly the expertise (previous answers) and authority (position in the social network) of a respondent. However, existing approaches to incorporating this information are limited, as they (a) consider either the expertise or the authority, but not both; (b) ignore domain knowledge that could differentiate between the topics of previous answers; or (c) simply use authority information to adjust the similarity score, rather than fully integrating it into the process of measuring the similarity between the question and answer segments. We propose a new approach called the knowledge-enhanced attentive answer selection (KAAS) model, which enhances performance by (a) considering both the expertise and the authority of the answerer; (b) utilizing human-labeled tags, a taxonomy of tags, and votes as domain knowledge to infer the expertise of the respondent; (c) using a matrix decomposition of the social network (based on ‘following’ relationships) to infer the authority of the respondent and incorporating this information into the process of evaluating the similarity between segments. In addition, we incorporate an external knowledge graph to capture more professional information for CQA systems for vertical communities. We also adopt an attention mechanism to integrate our analysis of both questions and answers texts and the aforementioned community information. Experiments with both vertical and general CQA sites demonstrate the superior performance of the proposed KAAS model.-
dc.languageeng-
dc.relation.ispartofKnowledge-Based Systems-
dc.subjectAnswer selection-
dc.subjectCommunity question answering-
dc.subjectKnowledge discovery-
dc.subjectKnowledge graph embedding-
dc.subjectRecommender systems-
dc.titleKnowledge-enhanced attentive learning for answer selection in community question answering systems-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.knosys.2022.109117-
dc.identifier.scopuseid_2-s2.0-85131674852-
dc.identifier.volume250-
dc.identifier.spagearticle no. 109117-
dc.identifier.epagearticle no. 109117-
dc.identifier.isiWOS:000811334800003-

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