The Journal of China Universities of Posts and Telecommunications ›› 2022, Vol. 29 ›› Issue (4): 89-105.doi: 10.19682/j.cnki.1005-8885.2022.2022

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Summary of research on recommendation system based on serendipity

Meng Wei, Wang Liting, Lu Meng   

  1. 1. School of Information Science and Technology, Beijing Forestry University, Beijing 100083, China
    2. Engineering Research Center for Forestry-oriented Intelligent Information Processing, National Forestry and
    Grassland Administration, Beijing 100083, China
  • Received:2021-07-02 Revised:2021-08-18 Accepted:2021-11-14 Online:2022-08-31 Published:2022-08-31
  • Contact: Meng Wei, E-mail:

Abstract: Personalized recommender systems provide various personalized recommendations for different users through the analysis of their respective historical data. Currently, the problem of the “filter bubble" which has to do with over-specialization persists. Serendipity (SRDP), one of the evaluation indicators, can provide users with unexpected and useful recommendations, and help to successfully mitigate the filter bubble problem, and enhance users' satisfaction levels and provide them with diverse recommendations. Since SRDP is highly subjective and challenging to study, only a few studies have focused on it in recent years. In this study, the research results on SRDP were summarized, the various definitions of SRDP and its applications were discussed, the specific SRDP calculation process from qualitative to quantitative perspectives was presented, the challenges and the development directions were outlined to provide a framework for further research.

Key words: serendipity, recommended algorithm, recommended diversity, filter bubbles, evaluation indicators

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