A Novel Semantic Clustering Approach for Reasonable Diversity in News Recommendations

  • Punam Bedi
  • Shikha Agarwa
  • Archana Singhal
  • Ena Jain
  • Gunjan Gupta
Conference paper
Part of the Smart Innovation, Systems and Technologies book series (SIST, volume 31)

Abstract

Experienced users expect the recommendations to be accurate as well as diverse. Unconditional diversity looses user’s trust. Therefore a novel soft hierarchical semantic clustering approach is proposed to group users based on their semantic profiles, to bring reasonable diversity in news recommendations. To find ranked membership of user in a cluster, interest score along with rank of that category in profile is considered. Users are compared semantically using hierarchical structure of ontology, to bring positive serendipity along with reasonable diversity. New items are recommended with semantic ranking. Transparency helps user to understand and logically accept new unexpected recommendations. Clusters are formed by making variations in standard Jaccard similarity metric and are compared for homogeneity using Semi-Partial R-Squared (SPRS) metric. Result shows that formed clusters are better in terms of homogeneity and distribution of concepts per cluster. The approach is scalable, as number of users and items increases.

Keywords

Collaborative filtering Hierarchical semantic clustering Soft clustering Semantic user profile Transparency 

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Copyright information

© Springer India 2015

Authors and Affiliations

  • Punam Bedi
    • 1
  • Shikha Agarwa
    • 1
  • Archana Singhal
    • 1
  • Ena Jain
    • 1
  • Gunjan Gupta
    • 1
  1. 1.Department of Computer ScienceUniversity of DelhiDelhiIndia

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