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Related papers: The Unfairness of Popularity Bias in Book Recommen…

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Many recommendation algorithms suffer from popularity bias: a small number of popular items being recommended too frequently, while other items get insufficient exposure. Research in this area so far has concentrated on a one-shot…

Information Retrieval · Computer Science 2019-06-28 Himan Abdollahpouri , Robin Burke

Recommender system usually faces popularity bias issues: from the data perspective, items exhibit uneven (long-tail) distribution on the interaction frequency; from the method perspective, collaborative filtering methods are prone to…

Information Retrieval · Computer Science 2021-05-14 Yang Zhang , Fuli Feng , Xiangnan He , Tianxin Wei , Chonggang Song , Guohui Ling , Yongdong Zhang

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

Statements on the propagation of bias by recommender systems are often hard to verify or falsify. Research on bias tends to draw from a small pool of publicly available datasets and is therefore bound by their specific properties.…

Information Retrieval · Computer Science 2024-09-13 Savvina Daniil , Manel Slokom , Mirjam Cuper , Cynthia C. S. Liem , Jacco van Ossenbruggen , Laura Hollink

Conversational recommender systems (CRS) have shown great success in accurately capturing a user's current and detailed preference through the multi-round interaction cycle while effectively guiding users to a more personalized…

Information Retrieval · Computer Science 2022-08-23 Allen Lin , Jianling Wang , Ziwei Zhu , James Caverlee

We propose a simple model of an idealized online cultural market in which $N$ items, endowed with a hidden quality metric, are recommended to users by a ranking algorithm possibly biased by the current items' popularity. Our goal is to…

Social and Information Networks · Computer Science 2023-01-18 Rossano Gaeta , Michele Garetto , Giancarlo Ruffo , Alessandro Flammini

Popularity bias in recommender systems can increase cultural overrepresentation by favoring norms from dominant cultures and marginalizing underrepresented groups. This issue is critical for platforms offering cultural products, as they…

Information Retrieval · Computer Science 2024-12-20 Armin Moradi , Nicola Neophytou , Florian Carichon , Golnoosh Farnadi

Recommender systems, while transformative in online user experiences, have raised concerns over potential provider-side fairness issues. These systems may inadvertently favor popular items, thereby marginalizing less popular ones and…

Information Retrieval · Computer Science 2023-09-11 Saeedeh Karimi , Hossein A. Rahmani , Mohammadmehdi Naghiaei , Leila Safari

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

With a vast number of items, web-pages, and news to choose from, online services and the customers both benefit tremendously from personalized recommender systems. Such systems however provide great opportunities for targeted…

Information Retrieval · Computer Science 2015-04-16 Subhashini Krishnasamy , Rajat Sen , Sewoong Oh , Sanjay Shakkottai

Recent work in recommender systems mainly focuses on fairness in recommendations as an important aspect of measuring recommendations quality. A fairness-aware recommender system aims to treat different user groups similarly. Relevant work…

Information Retrieval · Computer Science 2022-05-18 Hossein A. Rahmani , Mohammadmehdi Naghiaei , Mahdi Dehghan , Mohammad Aliannejadi

Collaborative filtering-based recommender systems leverage vast amounts of behavioral user data, which poses severe privacy risks. Thus, often, random noise is added to the data to ensure Differential Privacy (DP). However, to date, it is…

Information Retrieval · Computer Science 2024-01-17 Peter Müllner , Elisabeth Lex , Markus Schedl , Dominik Kowald

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

Nowadays, with the increase in the amount of information generated in the webspace, many web service providers try to use recommender systems to personalize their services and make accessing the content convenient. Recommender systems that…

Information Retrieval · Computer Science 2021-12-07 Reza Shafiloo , Marjan Kaedi , Ali Pourmiri

Popularity bias is a well-known challenge in recommender systems, where a small number of popular items receive disproportionate attention, while the majority of less popular items are largely overlooked. This imbalance often results in…

Information Retrieval · Computer Science 2025-08-26 Parviz Ahmadov , Masoud Mansoury

Recommender systems often suffer from popularity bias, where popular items are overly recommended while sacrificing unpopular items. Existing researches generally focus on ensuring the number of recommendations exposure of each item is…

Information Retrieval · Computer Science 2023-05-10 Yuanhao Liu , Qi Cao , Huawei Shen , Yunfan Wu , Shuchang Tao , Xueqi Cheng

Recommender systems have been applied successfully in a number of different domains, such as, entertainment, commerce, and employment. Their success lies in their ability to exploit the collective behavior of users in order to deliver…

Information Retrieval · Computer Science 2018-11-06 Virginia Tsintzou , Evaggelia Pitoura , Panayiotis Tsaparas

The suggestions generated by most existing recommender systems are known to suffer from a lack of diversity, and other issues like popularity bias. As a result, they have been observed to promote well-known "blockbuster" items, and to…

Computers and Society · Computer Science 2019-09-05 Bibek Paudel , Abraham Bernstein

Recommendation algorithms are known to suffer from popularity bias; a few popular items are recommended frequently while the majority of other items are ignored. These recommendations are then consumed by the users, their reaction will be…

Information Retrieval · Computer Science 2020-07-28 Masoud Mansoury , Himan Abdollahpouri , Mykola Pechenizkiy , Bamshad Mobasher , Robin Burke