review-article

Fairness in recommender systems: research landscape and future directions

Authors:

Yashar Deldjoo,

Dietmar Jannach,

Alejandro Bellogin,

Alessandro Difonzo,

Dario ZanzonelliAuthors Info & Claims

User Modeling and User-Adapted Interaction, Volume 34, Issue 1

Pages 59 - 108

https://doi.org/10.1007/s11257-023-09364-z

Published: 24 April 2023 Publication History

Abstract

Recommender systems can strongly influence which information we see online, e.g., on social media, and thus impact our beliefs, decisions, and actions. At the same time, these systems can create substantial business value for different stakeholders. Given the growing potential impact of such AI-based systems on individuals, organizations, and society, questions of fairness have gained increased attention in recent years. However, research on fairness in recommender systems is still a developing area. In this survey, we first review the fundamental concepts and notions of fairness that were put forward in the area in the recent past. Afterward, through a review of more than 160 scholarly publications, we present an overview of how research in this field is currently operationalized, e.g., in terms of general research methodology, fairness measures, and algorithmic approaches. Overall, our analysis of recent works points to certain research gaps. In particular, we find that in many research works in computer science, very abstract problem operationalizations are prevalent and questions of the underlying normative claims and what represents a fair recommendation in the context of a given application are often not discussed in depth. These observations call for more interdisciplinary research to address fairness in recommendation in a more comprehensive and impactful manner.

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cover image User Modeling and User-Adapted Interaction

User Modeling and User-Adapted Interaction Volume 34, Issue 1

Mar 2024

255 pages

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Published: 24 April 2023

Accepted: 17 March 2023

Received: 27 June 2022

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Aird AFarastu PSun JStefancová EAll CVoida AMattei NBurke R(2024)Dynamic Fairness-aware Recommendation Through Multi-agent Social ChoiceACM Transactions on Recommender Systems10.1145/36906533:2(1-35)Online publication date: 28-Sep-2024
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Zhao YWang YLiu YCheng XAggarwal CDerr T(2024)Fairness and Diversity in Recommender Systems: A SurveyACM Transactions on Intelligent Systems and Technology10.1145/366492816:1(1-28)Online publication date: 21-May-2024
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