Scalable and Data-Independent Multi-Agent Recommender System Using Social Networks Analysis

Amin Nazari (), Mojtaba Kordabadi () and Muharram Mansoorizadeh
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Amin Nazari: Computer Engineering Department, Bu-Ali Sina University, Hamedan, Iran
Mojtaba Kordabadi: Computer Engineering Department, Bu-Ali Sina University, Hamedan, Iran
Muharram Mansoorizadeh: Computer Engineering Department, Bu-Ali Sina University, Hamedan, Iran

International Journal of Information Technology & Decision Making (IJITDM), 2024, vol. 23, issue 02, 741-762

Abstract: Nowadays, many online users find the selection of information and required products challenging due to the growing volume of data on the web. Recommender systems are introduced to deal with information overload. Cold start and data sparsity are the two primary issues in these systems, which lead to a decrease in the efficiency of recommender systems. To solve the problems, this paper proposes a novel method based on social network analysis. Our method leverages a multi-agent system for clustering users and items and predicting relationships between them simultaneously. The information on users and items is extracted from the user-item matrix as distinct graphs. Each of the graphs is then treated as a social network, which is further processed and analyzed by community detection and link prediction procedures. The users are grouped into several clusters by the community detection agent, which results in each cluster as a community. Then link prediction agent identifies the latent relationships between users and items. Simulation results show that the proposed method has significantly improved performance metrics as compared to recent techniques.

Keywords: Recommender systems; social network analysis; community detection; link prediction; multi-agent systems (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1142/S021962202350030X

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