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Related papers: A Survey on Popularity Bias in Recommender Systems

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Recommender systems are vital for shaping user online experiences. While some believe they may limit new content exploration and promote opinion polarization, a systematic analysis is still lacking. We present a model that explores the…

Physics and Society · Physics 2023-12-15 Giordano De Marzo , Pietro Gravino , Vittorio Loreto

Popularity bias occurs when popular items are recommended far more frequently than they should be, negatively impacting both user experience and recommendation accuracy. Existing debiasing methods mitigate popularity bias often uniformly…

Information Retrieval · Computer Science 2025-05-29 Shiyin Tan , Dongyuan Li , Renhe Jiang , Zhen Wang , Xingtong Yu , Manabu Okumura

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

Recommender systems for software engineering (RSSEs) assist software engineers in dealing with a growing information overload when discerning alternative development solutions. While RSSEs are becoming more and more effective in suggesting…

Software Engineering · Computer Science 2023-04-21 Phuong T. Nguyen , Riccardo Rubei , Juri Di Rocco , Claudio Di Sipio , Davide Di Ruscio , Massimiliano Di Penta

Several studies have identified discrepancies between the popularity of items in user profiles and the corresponding recommendation lists. Such behavior, which concerns a variety of recommendation algorithms, is referred to as popularity…

Information Retrieval · Computer Science 2021-08-17 Oleg Lesota , Alessandro B. Melchiorre , Navid Rekabsaz , Stefan Brandl , Dominik Kowald , Elisabeth Lex , Markus Schedl

Recommender systems daily influence our decisions on the Internet. While considerable attention has been given to issues such as recommendation accuracy and user privacy, the long-term mutual feedback between a recommender system and the…

Information Retrieval · Computer Science 2015-08-10 An Zeng , Chi Ho Yeung , Matus Medo , Yi-Cheng Zhang

Imagine a food recommender system -- how would we check if it is \emph{causing} and fostering unhealthy eating habits or merely reflecting users' interests? How much of a user's experience over time with a recommender is caused by the…

Machine Learning · Computer Science 2021-01-13 Sirui Yao , Yoni Halpern , Nithum Thain , Xuezhi Wang , Kang Lee , Flavien Prost , Ed H. Chi , Jilin Chen , Alex Beutel

The ongoing rapid expansion of the Internet greatly increases the necessity of effective recommender systems for filtering the abundant information. Extensive research for recommender systems is conducted by a broad range of communities…

Physics and Society · Physics 2015-06-04 Linyuan Lü , Matus Medo , Chi Ho Yeung , Yi-Cheng Zhang , Zi-Ke Zhang , Tao Zhou

Recommender systems are indispensable because they influence our day-to-day behavior and decisions by giving us personalized suggestions. Services like Kindle, Youtube, and Netflix depend heavily on the performance of their recommender…

Information Retrieval · Computer Science 2021-12-07 Shrikant Saxena , Shweta Jain

Recommender systems are a vital tool that helps us to overcome the information overload problem. They are being used by most e-commerce web sites and attract the interest of a broad scientific community. A recommender system uses data on…

Information Retrieval · Computer Science 2017-02-22 Fei Yu , An Zeng , Sebastien Gillard , Matus Medo

Popularity bias is the idea that a recommender system will unduly favor popular artists when recommending artists to users. As such, they may contribute to a winner-take-all marketplace in which a small number of artists receive nearly all…

Information Retrieval · Computer Science 2022-08-23 Douglas R. Turnbull , Sean McQuillan , Vera Crabtree , John Hunter , Sunny Zhang

Algorithms that favor popular items are used to help us select among many choices, from engaging articles on a social media news feed to songs and books that others have purchased, and from top-raked search engine results to highly-cited…

Computers and Society · Computer Science 2026-05-19 Azadeh Nematzadeh , Giovanni Luca Ciampaglia , Filippo Menczer , Alessandro Flammini

The primary goal of a recommender system is often known as "helping users find relevant items", and a lot of recommendation algorithms are proposed accordingly. However, these accuracy-oriented methods usually suffer the problem of…

Social and Information Networks · Computer Science 2020-04-23 Qiang Dong , Quan Yuan , Yang-Bo Shi

Conversational recommender systems (CRS) aim to provide the recommendation service via natural language conversations. To develop an effective CRS, high-quality CRS datasets are very crucial. However, existing CRS datasets suffer from the…

Information Retrieval · Computer Science 2023-10-24 Zhipeng Zhao , Kun Zhou , Xiaolei Wang , Wayne Xin Zhao , Fan Pan , Zhao Cao , Ji-Rong Wen

Recommendation Systems (RS) are often plagued by popularity bias. When training a recommendation model on a typically long-tailed dataset, the model tends to not only inherit this bias but often exacerbate it, resulting in…

Information Retrieval · Computer Science 2025-04-15 Siyi Lin , Chongming Gao , Jiawei Chen , Sheng Zhou , Binbin Hu , Yan Feng , Chun Chen , Can Wang

Multimedia recommender systems suggest media items, e.g., songs, (digital) books and movies, to users by utilizing concepts of traditional recommender systems such as collaborative filtering. In this paper, we investigate a potential issue…

Information Retrieval · Computer Science 2022-03-02 Dominik Kowald , Emanuel Lacic

Recommender system usually suffers from severe popularity bias -- the collected interaction data usually exhibits quite imbalanced or even long-tailed distribution over items. Such skewed distribution may result from the users' conformity…

Information Retrieval · Computer Science 2021-09-17 Zihao Zhao , Jiawei Chen , Sheng Zhou , Xiangnan He , Xuezhi Cao , Fuzheng Zhang , Wei Wu

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

Beyond accuracy, there are a variety of aspects to the quality of recommender systems, such as diversity, fairness, and robustness. We argue that many of the prevalent problems in recommender systems are partly due to low-dimensionality of…

Information Retrieval · Computer Science 2023-05-24 Naoto Ohsaka , Riku Togashi

One key property in recommender systems is the long-tail distribution in user-item interactions where most items only have few user feedback. Improving the recommendation of tail items can promote novelty and bring positive effects to both…

Information Retrieval · Computer Science 2022-10-11 Tieyun Qian , Yile Liang , Qing Li , Xuan Ma , Ke Sun , Zhiyong Peng