Trust-embedded collaborative deep generative model for social recommendation

Xiaoyi Deng, Yenchun Jim Wu*, Fuzhen Zhuang


研究成果: 雜誌貢獻期刊論文同行評審

7 引文 斯高帕斯(Scopus)


Social networks can provide massive amounts of information for communication among users and communities. The trust relationships in social networks can be utilized to reveal user preferences for improving the quality of social recommendation, which aims to mitigate information overload and provide users with the most attractive and relevant items or services. However, the data sparsity and cold-start issue degrade recommendation performance significantly. To address these issues, a novel trust-embedded collaborative deep generative model (TCDG) is proposed for exploiting multisource information (content, rating and trust) to predict ratings. TCDG employs deep generative model to unsupervisedly learn deep latent representations for item content through an inference network in latent space instead of observation space. Meanwhile, TCDG adopts probabilistic matrix factorization to map users into low-dimensional latent feature spaces by trust relationships, which can reflect users’ mutual influence on the formation of users’ opinions more accurately and learn better implicit relationships between items and users from content, rating and trust. In addition, an approach with an annealing parameter to calculate the maximum a posteriori estimates is proposed to learn model parameters. Experiments using four real-world datasets are conducted to evaluate the prediction and top-ranking performance of our model. The results indicate that TDCG has better accuracy and robustness than other methods for making recommendations.

頁(從 - 到)8801-8829
期刊Journal of Supercomputing
出版狀態已發佈 - 2020 11月 1

ASJC Scopus subject areas

  • 軟體
  • 理論電腦科學
  • 資訊系統
  • 硬體和架構


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