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Modeling the Heterogeneous Duration of User Interest in Time-Dependent Recommendation: A Hidden Semi-Markov Approach
Zhang, Haidong1; Ni, Wancheng1; Li, Xin2; Yang, Yiping1
2018-02-01
发表期刊IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
卷号48期号:2页码:177-194
文章类型Article
摘要Recommender systems are widely used for suggesting books, education materials, and products to users by exploring their behaviors. In reality, users' preferences often change over time, leading to studies on time-dependent recommender systems. However, most existing approaches that deal with time information remain primitive. In this paper, we extend existing methods and propose a hidden semi-Markov model to track the change of users' interests. Particularly, this model allows for capturing the different durations of user stays in a (latent) interest state, which can better model the heterogeneity of user interests and focuses. We derive an expectation maximization algorithm to estimate the parameters of the framework and predict users' actions. Experiments on three real-world datasets show that our model significantly outperforms the state-of-the-art time-dependent and static benchmark methods. Further analyses of the experiment results indicate that the performance improvement is related to the heterogeneity of state durations and the drift of user interests in the dataset.
关键词Collaborative Filtering (Cf) Hidden Semi-markov Model (Hsmm) Recommender System Time-dependent Recommendation
WOS标题词Science & Technology ; Technology
DOI10.1109/TSMC.2016.2599705
关键词[WOS]SOCIAL NETWORK ; E-COMMERCE ; SYSTEMS ; DYNAMICS ; CHAINS ; WEB
收录类别SCI
语种英语
项目资助者National Natural Science Foundation of China(61174190 ; GuangDong Natural Science Foundation(2015A030313876) ; CityU SRG(7004287) ; Shenzhen Research Institute, City University of Hong Kong ; 71572169)
WOS研究方向Automation & Control Systems ; Computer Science
WOS类目Automation & Control Systems ; Computer Science, Cybernetics
WOS记录号WOS:000422795800002
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/21939
专题综合信息系统研究中心
作者单位1.Chinese Acad Sci, Inst Automat, Beijing 100190, Peoples R China
2.City Univ Hong Kong, Dept Informat Syst, Hong Kong, Hong Kong, Peoples R China
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Zhang, Haidong,Ni, Wancheng,Li, Xin,et al. Modeling the Heterogeneous Duration of User Interest in Time-Dependent Recommendation: A Hidden Semi-Markov Approach[J]. IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS,2018,48(2):177-194.
APA Zhang, Haidong,Ni, Wancheng,Li, Xin,&Yang, Yiping.(2018).Modeling the Heterogeneous Duration of User Interest in Time-Dependent Recommendation: A Hidden Semi-Markov Approach.IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS,48(2),177-194.
MLA Zhang, Haidong,et al."Modeling the Heterogeneous Duration of User Interest in Time-Dependent Recommendation: A Hidden Semi-Markov Approach".IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS 48.2(2018):177-194.
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