User credit-based collaborative filtering

被引:17
作者
Jeong, Buhwan [2 ]
Lee, Jaewook [1 ]
Cho, Hyunbo [1 ]
机构
[1] Pohang Univ Sci & Technol, Dept Ind & Management Engn, Pohang 790784, South Korea
[2] Dauni Commun Corp, Data Min Team, Cheju 690150, South Korea
关键词
Collaborative filtering; Memory-based method; Recommender system; Sparsity; User credit; OF-THE-ART; RECOMMENDATION;
D O I
10.1016/j.eswa.2008.09.034
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
Memory-based collaborative filtering is the state-of-the-art method in recommender systems and has proven to be successful in various applications. In this paper we develop novel memory-based methods that incorporate the level of a user credit instead of using similarity between users. The user credit is the degree of one's rating reliability that measures how adherently the user rates items as others do. Preliminary simulation results show that the proposed methods outperform the conventional memory-based ones. The methods are effective in a cold-starting problem. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:7309 / 7312
页数:4
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