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GLORY: Exploration and integration of global and local correlations to improve personalized online social recommendations

Author

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  • Mingxin Gan

    (University of Science and Technology Beijing)

  • Lily Sun

    (University of Reading)

  • Rui Jiang

    (Tsinghua University)

Abstract

Nowadays people manage their social circles via a variety of online social media which employ social recommendation as an important component. Among social recommendation methods, global methods take an emphasis on common tastes between people while local methods assume that new relations are established mainly through people’s common friends. However, in a real social network, both local and global relations exist, which motivate us to integrate them to improve recommendation performance. To achieve the goal, we proposed a novel hybrid method GLORY to combine global associations with local correlations for social recommendation. GLORY consists of two components: GLOBE and LORY. The former is a globalised regression model to explore the concordance between people’s preference with the relatedness of their friends. The latter is an integration method to fuse global and local correlations via a rigorous statistical model to calibrate the statistical significance of these correlations. Furthermore, we demonstrated the effectiveness of our methods via 10-fold large-scale cross-validation on three real social network datasets (Facebook, Last.fm and Epinions). Results show that GLORY significantly outperform the state-of-the-art methods while LORY is effective across various global and local methods, indicating their promising future for social recommendations.

Suggested Citation

  • Mingxin Gan & Lily Sun & Rui Jiang, 2019. "GLORY: Exploration and integration of global and local correlations to improve personalized online social recommendations," Information Systems Frontiers, Springer, vol. 21(4), pages 925-939, August.
  • Handle: RePEc:spr:infosf:v:21:y:2019:i:4:d:10.1007_s10796-017-9797-4
    DOI: 10.1007/s10796-017-9797-4
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    References listed on IDEAS

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    Cited by:

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