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• W3087549416 startingPage "106433" @default.
• W3087549416 abstract "Social voting is an emerging new feature in online social platforms, through which users can express their attitudes and opinions towards various interested subjects. Since both social relations and textual content decide the votes propagation, the diverse sources present opportunities and challenges for recommender systems. In this paper, we jointly consider these two factors for the online voting recommendation. First, we conduct feature learning on the vote content. Note that the vote questions are usually short and contain informal expressions, existing text mining methods cannot handle it well. We propose a novel topic-enhanced word embedding (TEWE) method, which learns the word vectors by considering both token-level semantics and document-level mixture topics. Second, we propose two Joint Topic-Semantic-aware Social Matrix Factorization (JTS-MF) models, which fuse social relations and textual content for the vote recommendation. Specifically, JTS-MF1 directly identifies the interaction strength to calculate the similarity among users and votes, while JTS-MF2 aims to preserve inter-user and inter-vote similarities during matrix factorization. Extensive experimental results on real online voting dataset show the effectiveness of our approaches against several state-of-the-art baselines. JTS-MF1 and JTS-MF2 models surpass the matrix factorization based method, with 25.4% and 57.1% improvements in the top-1 recall, and 59.12% and 25.1% improvements in the top-10 recall." @default.
• W3087549416 created "2020-09-25" @default.
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• W3087549416 date "2020-12-01" @default.
• W3087549416 modified "2023-10-17" @default.
• W3087549416 title "Joint Topic-Semantic-aware Social Matrix Factorization for online voting recommendation" @default.
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• W3087549416 doi "https://doi.org/10.1016/j.knosys.2020.106433" @default.
• W3087549416 hasPublicationYear "2020" @default.
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