An approach to effective recommendation considering user preference and diversity simultaneously

Sang Chul Lee, Sang Wook Kim, Sunju Park, Dong Kyu Chae

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


This paper addresses recommendation diversification. Existing diversification methods have difficulty in dealing with the tradeoff between accuracy and diversity. We point out the root of the problem in diversification methods and propose a novel method that can avoid the problem. Our method aims to find an optimal solution of the objective function that is carefully designed to consider user preference and the diversity among recommended items simultaneously. In addition, we propose an item clustering and a greedy approximation to achieve efficiency in recommendation.

Original languageEnglish
Pages (from-to)244-248
Number of pages5
JournalIEICE Transactions on Information and Systems
Issue number1
Publication statusPublished - 2018 Jan

Bibliographical note

Funding Information:
This work was supported by (1) the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT; Ministry of Science and ICT) (No. NRF-2017R1A2B3004581), (2) Next-Generation Information Computing Development Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (No. NRF-2017M3C4A7083678), and (3) the Ministry of Science and ICT (MSIT), Korea, under the Information Technology Research Center (ITRC) support program (IITP-2017-2013-0-00881) supervised by the Institute for Information & communications Technology Promotion (IITP).

Publisher Copyright:
Copyright © 2018 The Institute of Electronics, Information and Communication Engineers

All Science Journal Classification (ASJC) codes

  • Software
  • Hardware and Architecture
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering
  • Artificial Intelligence

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