Dynamic Group Recommendation Based on the Attention Mechanism

Haiyan Xu, Yanhui Ding, Jing Sun, Kun Zhao and Yuanjian Chen
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Haiyan Xu: School of Information Science and Engineering, Shandong Normal University, Jinan 250358, China
Yanhui Ding: School of Information Science and Engineering, Shandong Normal University, Jinan 250358, China
Jing Sun: School of Information Science and Engineering, Shandong Normal University, Jinan 250358, China
Kun Zhao: School of Information Science and Engineering, Shandong Normal University, Jinan 250358, China
Yuanjian Chen: School of Information Science and Engineering, Shandong Normal University, Jinan 250358, China

Future Internet, 2019, vol. 11, issue 9, 1-15

Abstract: Group recommendation has attracted significant research efforts for its importance in benefiting group members. The purpose of group recommendation is to provide recommendations to group users, such as recommending a movie to several friends. Group recommendation requires that the recommendation should be as satisfactory as possible to each member of the group. Due to the lack of weighting of users in different items, group decision-making cannot be made dynamically. Therefore, in this paper, a dynamic recommendation method based on the attention mechanism is proposed. Firstly, an improved density peak clustering ( DPC ) algorithm is used to discover the potential group; and then the attention mechanism is adopted to learn the influence weight of each user. The normalized discounted cumulative gain (NDCG) and hit ratio (HR) are adopted to evaluate the validity of the recommendation results. Experimental results on the CAMRa2011 dataset show that our method is effective.

Keywords: group recommendation; density peak clustering; attention mechanism (search for similar items in EconPapers)
JEL-codes: O3 (search for similar items in EconPapers)
Date: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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