DU Yongping, DU Xiaoyan, HUANG Liang. Improve the Collaborative Filtering Recommender System Performance by Trust Network Construction[J]. Chinese Journal of Electronics, 2016, 25(3): 418-423. doi: 10.1049/cje.2016.05.005
Citation: DU Yongping, DU Xiaoyan, HUANG Liang. Improve the Collaborative Filtering Recommender System Performance by Trust Network Construction[J]. Chinese Journal of Electronics, 2016, 25(3): 418-423. doi: 10.1049/cje.2016.05.005

Improve the Collaborative Filtering Recommender System Performance by Trust Network Construction

doi: 10.1049/cje.2016.05.005
Funds:  This work is supported by the National Natural Science Foundation (No.60803086), National Science and Technology Support Plan (No.2013BAH21B02-01) and Beijing Natural Science Foundation (No.4153058).
  • Received Date: 2014-10-14
  • Rev Recd Date: 2014-11-02
  • Publish Date: 2016-05-10
  • Data sparseness brings significant challenges to the research of recommender systems. It becomes more severe for neighborhood-based collaborative filtering. We introduce the trust relation computing of the sociology field. Instead of the traditional similarity computing method, the trust degree is integrated for the nearest neighbor selection. The trust network is constructed by the expansion of different path length, and the trust value between the users can be obtained by the trust transmission rules. To verify the effectiveness of our method, we give the experiments on different techniques for rating prediction, including Pearson based method, the User position similarity (UPS) based method and the trust with Pearson and UPS. We also give the t-test result. The implementation of the experiment on the Epinions data set shows that the proposed method can improve the system performance significantly.
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