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Related papers: Fairness of Exposure in Dynamic Recommendation

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Fairness is a critical system-level objective in recommender systems that has been the subject of extensive recent research. It is especially important in multi-sided recommendation platforms where it may be crucial to optimize utilities…

Information Retrieval · Computer Science 2021-11-11 Masoud Mansoury

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

Exposure bias is a well-known issue in recommender systems where items and suppliers are not equally represented in the recommendation results. This is especially problematic when bias is amplified over time as a few popular items are…

Information Retrieval · Computer Science 2021-08-10 Masoud Mansoury , Himan Abdollahpouri , Bamshad Mobasher , Mykola Pechenizkiy , Robin Burke , Milad Sabouri

What we discover and see online, and consequently our opinions and decisions, are becoming increasingly affected by automated machine learned predictions. Similarly, the predictive accuracy of learning machines heavily depends on the…

Information Retrieval · Computer Science 2020-01-15 Sami Khenissi , Olfa Nasraoui

Exposure bias is a well-known issue in recommender systems where items and suppliers are not equally represented in the recommendation results. This bias becomes particularly problematic over time as a few items are repeatedly…

Information Retrieval · Computer Science 2024-08-09 Masoud Mansoury , Bamshad Mobasher , Herke van Hoof

Exposure bias is a well-known issue in recommender systems where items and suppliers are not equally represented in the recommendation results. This is especially problematic when bias is amplified over time as a few items (e.g., popular…

Information Retrieval · Computer Science 2022-09-07 Masoud Mansoury , Bamshad Mobasher , Herke van Hoof

Bias in recommender systems not only distorts user experience but also perpetuates and amplifies existing societal stereotypes, particularly in sectors like fashion e-commerce. This study employs a dynamic modeling approach to scrutinize…

Information Retrieval · Computer Science 2025-10-28 Mahsa Goodarzi , M. Abdullah Canbaz

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

Selection bias is prevalent in the data for training and evaluating recommendation systems with explicit feedback. For example, users tend to rate items they like. However, when rating an item concerning a specific user, most of the…

Information Retrieval · Computer Science 2021-09-14 Weishen Pan , Sen Cui , Hongyi Wen , Kun Chen , Changshui Zhang , Fei Wang

Popularity bias and positivity bias are two prominent sources of bias in recommender systems. Both arise from input data, propagate through recommendation models, and lead to unfair or suboptimal outcomes. Popularity bias occurs when a…

Information Retrieval · Computer Science 2026-01-21 Masoud Mansoury , Jin Huang , Mykola Pechenizkiy , Herke van Hoof , Maarten de Rijke

Sequential recommendation (SR) models are typically trained on user-item interactions which are affected by the system exposure bias, leading to the user preference learned from the biased SR model not being fully consistent with the true…

Information Retrieval · Computer Science 2023-12-13 Jiyuan Yang , Yue Ding , Yidan Wang , Pengjie Ren , Zhumin Chen , Fei Cai , Jun Ma , Rui Zhang , Zhaochun Ren , Xin Xin

Popularity bias is a well-known issue in recommender systems where few popular items are over-represented in the input data, while majority of other less popular items are under-represented. This disparate representation often leads to bias…

Information Retrieval · Computer Science 2023-10-05 Masoud Mansoury , Finn Duijvestijn , Imane Mourabet

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

Fairness is a critical system-level objective in recommender systems that has been the subject of extensive recent research. A specific form of fairness is supplier exposure fairness where the objective is to ensure equitable coverage of…

Information Retrieval · Computer Science 2021-07-09 Masoud Mansoury , Himan Abdollahpouri , Mykola Pechenizkiy , Bamshad Mobasher , Robin Burke

Recommender system fairness has been studied from the perspectives of a variety of stakeholders including content producers, the content itself and recipients of recommendations. Regardless of which type of stakeholders are considered, most…

Computers and Society · Computer Science 2022-09-21 Nil-Jana Akpinar , Cyrus DiCiccio , Preetam Nandy , Kinjal Basu

Recommender systems are known to exhibit fairness issues, particularly on the product side, where products and their associated suppliers receive unequal exposure in recommended results. While this problem has been widely studied in…

Information Retrieval · Computer Science 2025-07-22 Huy-Son Nguyen , Yuanna Liu , Masoud Mansoury , Mohammad Alian Nejadi , Alan Hanjalic , Maarten de Rijke

Popularity bias is a long-standing challenge in recommender systems. Such a bias exerts detrimental impact on both users and item providers, and many efforts have been dedicated to studying and solving such a bias. However, most existing…

Information Retrieval · Computer Science 2022-08-03 Ziwei Zhu , Yun He , Xing Zhao , James Caverlee

Recommender systems are known to suffer from the popularity bias problem: popular (i.e. frequently rated) items get a lot of exposure while less popular ones are under-represented in the recommendations. Research in this area has been…

Information Retrieval · Computer Science 2019-09-20 Himan Abdollahpouri , Masoud Mansoury , Robin Burke , Bamshad Mobasher

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

Related Item Recommendations (RIRs) are ubiquitous in most online platforms today, including e-commerce and content streaming sites. These recommendations not only help users compare items related to a given item, but also play a major role…

Information Retrieval · Computer Science 2022-04-04 Abhisek Dash , Abhijnan Chakraborty , Saptarshi Ghosh , Animesh Mukherjee , Krishna P. Gummadi
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