When Factorization Meets Heterogeneous Latent Topics: An Interpretable Cross-Site Recommendation Framework
When Factorization Meets Heterogeneous Latent Topics: An Interpretable Cross-Site Recommendation Framework
复制标题
当分解遇到异构潜在主题时:可解释的跨站点推荐框架
DOI:
10.1007/s11390-015-1570-x
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发表时间:
2015-07
影响因子:
0.7
通讯作者:
Huang He-Yan
中科院分区:
文献类型:
--
作者:
Xin Xin;Lin Chin-Yew;Wei Xiao-Chi;Huang He-Yan
Data sparsity is a well-known challenge in recommender systems. Previous studies alleviate this problem by incorporating the information within the corresponding social media site. In this paper, we solve this challenge by exploring cross-site information. Specifically, we examine: 1) how to effectively and efficiently utilize cross-site ratings and content features to improve recommendation performance and 2) how to make the recommendation interpretable by utilizing content features. We propose a joint model of matrix factorization and latent topic analysis. Heterogeneous content features are modeled by multiple kinds of latent topics. In addition, the combination of matrix factorization and latent topics makes the recommendation result interpretable. Therefore, the above two issues are simultaneously solved. Through a real-world dataset, where user behaviors in three social media sites are collected, we demonstrate that the proposed model is effective in improving recommendation performance and interpreting the rationale of ratings.
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2008-07
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2008-08
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Proceedings of the 22nd international conference on World Wide Web
影响因子:
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Proceedings of the 22nd international conference on World Wide Web
影响因子:
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