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Prior research on exposure fairness in the context of recommender systems has focused mostly on disparities in the exposure of individual or groups of items to individual users of the system. The problem of how individual or groups of items…

Information Retrieval · Computer Science 2022-05-03 Haolun Wu , Bhaskar Mitra , Chen Ma , Fernando Diaz , Xue Liu

As Recommender Systems (RS) influence more and more people in their daily life, the issue of fairness in recommendation is becoming more and more important. Most of the prior approaches to fairness-aware recommendation have been situated in…

Information Retrieval · Computer Science 2021-01-12 Yingqiang Ge , Shuchang Liu , Ruoyuan Gao , Yikun Xian , Yunqi Li , Xiangyu Zhao , Changhua Pei , Fei Sun , Junfeng Ge , Wenwu Ou , Yongfeng Zhang

As recommender systems have become more widespread and moved into areas with greater social impact, such as employment and housing, researchers have begun to seek ways to ensure fairness in the results that such systems produce. This work…

Information Retrieval · Computer Science 2020-05-28 Nasim Sonboli , Farzad Eskandanian , Robin Burke , Weiwen Liu , Bamshad Mobasher

We propose a control-theoretic interpretation of recommender systems and use this perspective to analyze how fairness interventions shape long-term system behavior. Fairness concerns arise for both users and creators, ranging from opinion…

Systems and Control · Electrical Eng. & Systems 2026-05-05 Giulia De Pasquale , Sarah Dean , Paolo Frasca

Though recommender systems are defined by personalization, recent work has shown the importance of additional, beyond-accuracy objectives, such as fairness. Because users often expect their recommendations to be purely personalized, these…

Information Retrieval · Computer Science 2021-03-17 Nasim Sonboli , Jessie J. Smith , Florencia Cabral Berenfus , Robin Burke , Casey Fiesler

In the current landscape of ever-increasing levels of digitalization, we are facing major challenges pertaining to scalability. Recommender systems have become irreplaceable both for helping users navigate the increasing amounts of data…

Information Retrieval · Computer Science 2024-04-03 Bjørnar Vassøy , Helge Langseth

Algorithmic decision making systems are ubiquitous across a wide variety of online as well as offline services. These systems rely on complex learning methods and vast amounts of data to optimize the service functionality, satisfaction of…

Machine Learning · Statistics 2017-03-27 Muhammad Bilal Zafar , Isabel Valera , Manuel Gomez Rodriguez , Krishna P. Gummadi

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

Traditionally, recommender systems operate by returning a user a set of items, ranked in order of estimated relevance to that user. In recent years, methods relying on stochastic ordering have been developed to create "fairer" rankings that…

Information Retrieval · Computer Science 2022-09-13 Amanda Bower , Kristian Lum , Tomo Lazovich , Kyra Yee , Luca Belli

Recommender systems have become a pervasive part of our daily online experience, and are one of the most widely used applications of artificial intelligence and machine learning. Therefore, regulations and requirements for trustworthy…

Information Retrieval · Computer Science 2024-07-01 Dominik Kowald

Federated learning (FL) has garnered considerable attention due to its privacy-preserving feature. Nonetheless, the lack of freedom in managing user data can lead to group fairness issues, where models are biased towards sensitive factors…

Machine Learning · Computer Science 2024-10-18 Gerry Windiarto Mohamad Dunda , Shenghui Song

Data bias, e.g., popularity impairs the dynamics of two-sided markets within recommender systems. This overshadows the less visible but potentially intriguing long-tail items that could capture user interest. Despite the abundance of…

Information Retrieval · Computer Science 2024-06-26 Zhichen Xiang , Hongke Zhao , Chuang Zhao , Ming He , Jianping Fan

User-side group fairness is crucial for modern recommender systems, aiming to alleviate performance disparities among user groups defined by sensitive attributes like gender, race, or age. In the ever-evolving landscape of user-item…

Information Retrieval · Computer Science 2025-05-30 Hyunsik Yoo , Zhichen Zeng , Jian Kang , Ruizhong Qiu , David Zhou , Zhining Liu , Fei Wang , Charlie Xu , Eunice Chan , Hanghang Tong

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

As trustworthy AI continues to advance, the fairness issue in recommendations has received increasing attention. A recommender system is considered unfair when it produces unequal outcomes for different user groups based on user-sensitive…

Artificial Intelligence · Computer Science 2024-10-24 Wei Chen , Meng Yuan , Zhao Zhang , Ruobing Xie , Fuzhen Zhuang , Deqing Wang , Rui Liu

Recommender systems can be found everywhere today, shaping our everyday experience whenever we're consuming content, ordering food, buying groceries online, or even just reading the news. Let's imagine we're in the process of building a…

Information Retrieval · Computer Science 2025-07-17 Cécile Logé

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

Recommender systems are one of the most pervasive applications of machine learning in industry, with many services using them to match users to products or information. As such it is important to ask: what are the possible fairness risks,…

Computers and Society · Computer Science 2019-03-12 Alex Beutel , Jilin Chen , Tulsee Doshi , Hai Qian , Li Wei , Yi Wu , Lukasz Heldt , Zhe Zhao , Lichan Hong , Ed H. Chi , Cristos Goodrow

Considering the impact of recommendations on item providers is one of the duties of multi-sided recommender systems. Item providers are key stakeholders in online platforms, and their earnings and plans are influenced by the exposure their…

Information Retrieval · Computer Science 2021-06-29 Ludovico Boratto , Gianni Fenu , Mirko Marras

As information filtering services, recommender systems have extremely enriched our daily life by providing personalized suggestions and facilitating people in decision-making, which makes them vital and indispensable to human society in the…

Information Retrieval · Computer Science 2023-06-02 Di Jin , Luzhi Wang , He Zhang , Yizhen Zheng , Weiping Ding , Feng Xia , Shirui Pan