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Collaboration Matrix Factorization on Rate and Review for Recommendation

Collaboration Matrix Factorization on Rate and Review for Recommendation
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Author(s): Zhicheng Wu (Beijing Jiaotong University, Beijing, China), Huafeng Liu (Beijing Jiaotong University, Beijing, China), Yanyan Xu (School of Information Science and Technology, Beijing Forestry University, Beijing, China)and Liping Jing (Beijing Jiaotong University, Beijing, China)
Copyright: 2019
Volume: 30
Issue: 2
Pages: 17
Source title: Journal of Database Management (JDM)
Editor(s)-in-Chief: Keng Siau (City University of Hong Kong, Hong Kong SAR)
DOI: 10.4018/JDM.2019040102

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Abstract

According to the sparseness of rating information, the quality of recommender systems has been greatly restricted. In order to solve this problem, much auxiliary information has been used, such as social networks, review information, and item description. Convolutional neural networks (CNNs) have been widely employed by recommender systems, it greatly improved the rating prediction's accuracy especially when combined with traditional recommendation methods. However, a large amount of research focuses on the consistency between the rating-based latent factor and review-based latent factor. But in fact, these two parts are completely different. In this article, the authors propose a model named collaboration matrix factorization (CMF) that combines a projection method with a convolutional matrix factorization (ConvMF) to extract the collaboration between rating-based latent factors and review-based latent factors that comes from the results of the CNN process. Extensive experiments on three real-world datasets show that the projection method achieves significant improvements over the existing baseline.

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