JSAI2025

Presentation information

Organized Session

Organized Session » OS-33

[4D2-OS-33b] OS-33

Fri. May 30, 2025 12:00 PM - 1:40 PM Room D (Room 1202)

オーガナイザ:西村 直樹(リクルート),池田 春之介(リクルート),関根 翔(メルカリ),大橋 耕也(メルカリ),佐々木 直(講談社),川上 孝介(博報堂テクノロジーズ),松本 健(JINS),磯 智大(ラクスル),小林 健(東京科学大学)

1:20 PM - 1:40 PM

[4D2-OS-33b-05] The Application of Contrast Effects in Two-Sided Recommendation Systems

〇Naoki Nishimura1, Tomoya Ando1, Ken Kobayashi2, Kazuhide Nakata2 (1. Recruit Co., Ltd., 2. Institute of Science Tokyo)

Keywords:Recommendation System, Marketing, Industrial Applications

Contrast effects refer to a psychological phenomenon where the relative value of a presented item changes based on comparisons with other items. This effect is widely utilized in the fields of marketing and pricing strategy. On the other hand, conventional recommendation systems mainly determine recommended items based on predicted user-item affinity, and thus fail to sufficiently consider factors that contribute to the relative attractiveness of an item, such as the order of presentation or the combination of items being compared. This paper proposes an evaluation function to realize contrast effect-aware recommendations in a two-sided recommendation system, and validates its effectiveness through the results of A/B testing in a real-world service.

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