Secure two-party rank correlation computations for recommender systems

Kok Seng Wong, Minjie Seo, Myung Ho Kim

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Recommendation systems are active information filtering systems that consist of a processor that can provide recommendations to requesting users (based on the personal ratings that were submitted by all users). In order to produce accurate and personalized recommendations, databases from different agencies can be merged together as a central database. However, due to competition and the possibility of disclosing business strategies, some agencies might not want to disclose the rating information of their customers. In this paper, we propose three secure protocols to compute rank correlation coefficients (Spearman's Rho and Kendall's Tau) for recommender systems. We utilize a semantically secure homomorphic cryptosystem and a ciphertext comparison approach in our protocol design.

Original languageEnglish
Title of host publicationProceedings - 14th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1022-1028
Number of pages7
Volume1
ISBN (Electronic)9781467379519
DOIs
Publication statusPublished - Dec 2 2015
Event14th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom 2015 - Helsinki, Finland
Duration: Aug 20 2015Aug 22 2015

Publication series

NameProceedings - 14th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom 2015
Volume1

Conference

Conference14th IEEE International Conference on Trust, Security and Privacy in Computing and Communications, TrustCom 2015
CountryFinland
CityHelsinki
Period8/20/158/22/15

Keywords

  • Ciphertext comparison
  • Data privacy
  • Homomorphic cryptosystem
  • Rank correlation coefficient
  • Recommender systems

ASJC Scopus subject areas

  • Computer Networks and Communications

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