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Social recommendation across multiple relational domains

Published: 29 October 2012 Publication History

Abstract

Social networks enable users to create different types of personal items. In dealing with serious information overload, the major problems of social recommendation are sparsity and cold start. In existing approaches, relational and heterogeneous domains can not be effectively utilized for social recommendation, which brings a challenge to model users and multiple types of items together on social networks. In this paper, we consider how to represent social networks with multiple relational domains and alleviate the major problems in an individual domain by transferring knowledge from other domains. We propose a novel Hybrid Random Walk (HRW), which can integrate multiple heterogeneous domains including directed/undirected links, signed/unsigned links and within-domain/cross-domain links into a star-structured hybrid graph with user graph at the center. We perform random walk until convergence and use the steady state distribution for recommendation. We conduct experiments on a real social network dataset and show that our method can significantly outperform existing social recommendation approaches.

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cover image ACM Conferences
CIKM '12: Proceedings of the 21st ACM international conference on Information and knowledge management
October 2012
2840 pages
ISBN:9781450311564
DOI:10.1145/2396761
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Published: 29 October 2012

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Author Tags

  1. hybrid random walk
  2. relational domains
  3. social recommendation
  4. star-structured graph
  5. transfer learning

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