Geographical diversification in POI recommendation: Toward improved coverage on interested areas

Jungkyu Han, Hayato Yamana

研究成果: Conference contribution

12 被引用数 (Scopus)

抄録

In recommending POIs(Point-Of-Interests), factors such as the diversity of the recommended POIs are as important as accuracy for providing a satisfactory recommendation. Although existing diversification methods can help POI recommender systems suggest more diverse POIs, they lack "geographical diversification," which results in the concentration of the supposedly "diverse" recommended POIs on "a small portion" in areas where the target-user is most active. This is caused by the neglect of POI locations in the diversification, i.e., existing diversification methods try to diversify the categories of recommended items. However, geographical diversification is essential for users whose activity interests comprise many sub-areas and who require a variety of recommended POIs encompassing all their activity interests. In this paper, we propose a novel proportional geographical diversification method that recommends a variety of POIs located in the activity district of a user such that the variety of sub-areas in the district is proportional to the frequency of his/her activity in each sub-area. We compare the performance of the proposed method with existing diversification methods using real datasets. The evaluation result shows that no method except the proposed one can significantly increase geographical diversity at the expense of tolerable accuracy loss.

本文言語English
ホスト出版物のタイトルRecSys 2017 - Proceedings of the 11th ACM Conference on Recommender Systems
出版社Association for Computing Machinery, Inc
ページ224-228
ページ数5
ISBN(電子版)9781450346528
DOI
出版ステータスPublished - 2017 8 27
イベント11th ACM Conference on Recommender Systems, RecSys 2017 - Como, Italy
継続期間: 2017 8 272017 8 31

出版物シリーズ

名前RecSys 2017 - Proceedings of the 11th ACM Conference on Recommender Systems

Other

Other11th ACM Conference on Recommender Systems, RecSys 2017
国/地域Italy
CityComo
Period17/8/2717/8/31

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 制御およびシステム工学
  • 情報システム
  • ソフトウェア

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