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Fairness-aware recommender systems that have a provider-side fairness concern seek to ensure that protected group(s) of providers have a fair opportunity to promote their items or products. There is a ``cost of fairness'' borne by the…

Information Retrieval · Computer Science 2022-09-12 Paresha Farastu , Nicholas Mattei , Robin Burke

In multi-stakeholder recommender systems (RS), users and providers operate as two crucial and interdependent roles, whose interests must be well-balanced. Prior research, including our work BankFair, has demonstrated the importance of…

Information Retrieval · Computer Science 2025-04-22 Xiaopeng Ye , Chen Xu , Jun Xu , Xuyang Xie , Gang Wang , Zhenhua Dong

Fairness is an emerging and challenging topic in recommender systems. In recent years, various ways of evaluating and therefore improving fairness have emerged. In this study, we examine existing evaluation measures of fairness in…

Information Retrieval · Computer Science 2024-05-21 Theresia Veronika Rampisela , Maria Maistro , Tuukka Ruotsalo , Christina Lioma

As a key application of artificial intelligence, recommender systems are among the most pervasive computer aided systems to help users find potential items of interests. Recently, researchers paid considerable attention to fairness issues…

Information Retrieval · Computer Science 2021-04-26 Le Wu , Lei Chen , Pengyang Shao , Richang Hong , Xiting Wang , Meng Wang

Fairness in recommender systems has been considered with respect to sensitive attributes of users (e.g., gender, race) or items (e.g., revenue in a multistakeholder setting). Regardless, the concept has been commonly interpreted as some…

Information Retrieval · Computer Science 2019-08-20 Yashar Deldjoo , Vito Walter Anelli , Hamed Zamani , Alejandro Bellogin , Tommaso Di Noia

Recommender systems are widely used to provide personalized recommendations to users. Recent research has shown that recommender systems may be subject to different types of biases, such as popularity bias, leading to an uneven distribution…

Information Retrieval · Computer Science 2023-10-03 Giovanni Pellegrini , Vittorio Maria Faraco , Yashar Deldjoo

Algorithmic fairness in recommender systems requires close attention to the needs of a diverse set of stakeholders that may have competing interests. Previous work in this area has often been limited by fixed, single-objective definitions…

Information Retrieval · Computer Science 2024-10-08 Amanda Aird , Elena Štefancová , Cassidy All , Amy Voida , Martin Homola , Nicholas Mattei , Robin Burke

Two-sided marketplaces embody heterogeneity in incentives: producers seek exposure while consumers seek relevance, and balancing these competing objectives through constrained optimization is now a standard practice. Yet real platforms face…

Computer Science and Game Theory · Computer Science 2026-02-13 Dominykas Seputis , Alexander Timans , Rajeev Verma

Fairness in AI-driven decision-making systems has become a critical concern, especially when these systems directly affect human lives. This paper explores the public's comprehension of fairness in healthcare recommendations. We conducted a…

Machine Learning · Computer Science 2024-09-10 Veronica Kecki , Alan Said

In this paper, we address the issue of recommending fairly from the aspect of providers, which has become increasingly essential in multistakeholder recommender systems. Existing studies on provider fairness usually focused on designing…

Information Retrieval · Computer Science 2023-03-14 Chen Xu , Sirui Chen , Jun Xu , Weiran Shen , Xiao Zhang , Gang Wang , Zhenghua Dong

There has been a flurry of research in recent years on notions of fairness in ranking and recommender systems, particularly on how to evaluate if a recommender allocates exposure equally across groups of relevant items (also known as…

Information Retrieval · Computer Science 2022-10-17 Flavien Prost , Ben Packer , Jilin Chen , Li Wei , Pierre Kremp , Nicholas Blumm , Susan Wang , Tulsee Doshi , Tonia Osadebe , Lukasz Heldt , Ed H. Chi , Alex Beutel

Driven by the need to capture users' evolving interests and optimize their long-term experiences, more and more recommender systems have started to model recommendation as a Markov decision process and employ reinforcement learning to…

Information Retrieval · Computer Science 2021-11-02 Dell Zhang , Jun Wang

Our narrative literature review acknowledges that, although there is an increasing interest in recommender system fairness in general, the music domain has received relatively little attention in this regard. However, addressing fairness of…

Information Retrieval · Computer Science 2022-09-14 Karlijn Dinnissen , Christine Bauer

This work takes a critical stance on previous studies concerning fairness evaluation in Large Language Model (LLM)-based recommender systems, which have primarily assessed consumer fairness by comparing recommendation lists generated with…

Information Retrieval · Computer Science 2025-02-24 Yashar Deldjoo , Tommaso di Noia

Algorithmic decision-making systems are increasingly used throughout the public and private sectors to make important decisions or assist humans in making these decisions with real social consequences. While there has been substantial…

Human-Computer Interaction · Computer Science 2020-01-28 Ruotong Wang , F. Maxwell Harper , Haiyi Zhu

Academic research in recommender systems has been greatly focusing on the accuracy-related measures of recommendations. Even when non-accuracy measures such as popularity bias, diversity, and novelty are studied, it is often solely from the…

Information Retrieval · Computer Science 2020-07-03 Himan Abdollahpouri , Masoud Mansoury

There has been significant research in the last five years on ensuring the providers of items in a recommender system are treated fairly, particularly in terms of the exposure the system provides to their work through its results. However,…

Information Retrieval · Computer Science 2023-09-20 Amifa Raj , Michael D. Ekstrand

There has been growing attention on fairness considerations recently, especially in the context of intelligent decision making systems. Explainable recommendation systems, in particular, may suffer from both explanation bias and performance…

Information Retrieval · Computer Science 2020-06-30 Zuohui Fu , Yikun Xian , Ruoyuan Gao , Jieyu Zhao , Qiaoying Huang , Yingqiang Ge , Shuyuan Xu , Shijie Geng , Chirag Shah , Yongfeng Zhang , Gerard de Melo

Ranking items by their probability of relevance has long been the goal of conventional ranking systems. While this maximizes traditional criteria of ranking performance, there is a growing understanding that it is an oversimplification in…

Information Retrieval · Computer Science 2021-09-14 Lequn Wang , Thorsten Joachims

Recommendation algorithms typically build models based on historical user-item interactions (e.g., clicks, likes, or ratings) to provide a personalized ranked list of items. These interactions are often distributed unevenly over different…

Information Retrieval · Computer Science 2021-03-16 Ziwei Zhu , Jianling Wang , James Caverlee