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Recommender systems play a vital role in helping users discover content in streaming services, but their effectiveness depends on users understanding why items are recommended. In this study, explanations were based solely on item features…

Information Retrieval · Computer Science 2025-05-07 Juan Ahmad , Jonas Hellgren , Alan Said

With the recent surge of social networks like Facebook, new forms of recommendations have become possible - personalized recommendations of ads, content, and even new friend and product connections based on one's social interactions. Since…

Databases · Computer Science 2011-05-24 Ashwin Machanavajjhala , Aleksandra Korolova , Atish Das Sarma

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

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

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

Recommender systems shape individual choices through feedback loops in which user behavior and algorithmic recommendations coevolve over time. The systemic effects of these loops remain poorly understood, in part due to unrealistic…

Information Retrieval · Computer Science 2026-02-19 Gabriele Barlacchi , Margherita Lalli , Emanuele Ferragina , Fosca Giannotti , Dino Pedreschi , Luca Pappalardo

Standard collaborative filtering approaches for top-N recommendation are biased toward popular items. As a result, they recommend items that users are likely aware of and under-represent long-tail items. This is inadequate, both for…

Information Retrieval · Computer Science 2018-03-02 Zainab Zolaktaf , Reza Babanezhad , Rachel Pottinger

Recommender systems are personalized: we expect the results given to a particular user to reflect that user's preferences. Some researchers have studied the notion of calibration, how well recommendations match users' stated preferences,…

Information Retrieval · Computer Science 2019-09-17 Kun Lin , Nasim Sonboli , Bamshad Mobasher , Robin Burke

Using multiple carousels, lists that wrap around and can be scrolled, is the basis for offering content in most contemporary movie streaming platforms. Carousels allow for highlighting different aspects of users' taste, that fall in…

Information Retrieval · Computer Science 2025-11-19 Daniël Wilten , Gideon Maillette de Buy Wenniger , Arjen Hommersom , Paul Lucassen , Emiel Poortman

Matrix factorization (MF) is extensively used to mine the user preference from explicit ratings in recommender systems. However, the reliability of explicit ratings is not always consistent, because many factors may affect the user's final…

Information Retrieval · Computer Science 2018-06-25 Zhipeng Wu , Hui Tian , Xuzhen Zhu , Shuo Wang

Social network websites, such as Facebook, YouTube, Lastfm etc, have become a popular platform for users to connect with each other and share content or opinions. They provide rich information for us to study the influence of user's social…

Information Retrieval · Computer Science 2012-06-22 Sanjay Purushotham , Yan Liu , C. -C. Jay Kuo

Personalized recommendation systems (RS) are extensively used in many services. Many of these are based on learning algorithms where the RS uses the recommendation history and the user response to learn an optimal strategy. Further, these…

Information Retrieval · Computer Science 2018-03-26 Rahul Meshram , D. Manjunath , Nikhil Karamchandani

Traditional recommendation proposals, including content-based and collaborative filtering, usually focus on similarity between items or users. Existing approaches lack ways of introducing unexpectedness into recommendations, prioritizing…

Information Retrieval · Computer Science 2024-05-15 Oliver Baumann , Durgesh Nandini , Anderson Rossanez , Mirco Schoenfeld , Julio Cesar dos Reis

Automated audits of recommender systems found that blindly following recommendations leads users to increasingly partisan, conspiratorial, or false content. At the same time, studies using real user traces suggest that recommender systems…

Computers and Society · Computer Science 2023-04-06 Manoel Horta Ribeiro , Veniamin Veselovsky , Robert West

Most modern recommendation algorithms are data-driven: they generate personalized recommendations by observing users' past behaviors. A common assumption in recommendation is that how a user interacts with a piece of content (e.g., whether…

Computers and Society · Computer Science 2024-05-12 Sarah H. Cen , Andrew Ilyas , Jennifer Allen , Hannah Li , Aleksander Madry

Learning user preferences for products based on their past purchases or reviews is at the cornerstone of modern recommendation engines. One complication in this learning task is that some users are more likely to purchase products or review…

Information Retrieval · Computer Science 2023-03-08 Wanning Chen , Mohsen Bayati

With the recent surge of social networks like Facebook, new forms of recommendations have become possible -- personalized recommendations of ads, content, and even new social and product connections based on one's social interactions. In…

Data Structures and Algorithms · Computer Science 2015-03-17 Ashwin Machanavajjhala , Aleksandra Korolova , Atish Das Sarma

As more and more people shift their movie watching online, competition between movie viewing websites are getting more and more intense. Therefore, it has become incredibly important to accurately predict a given user's watching list to…

Information Retrieval · Computer Science 2019-09-05 Ruomu Zou

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

With ever-increasing amounts of online information available, modeling and predicting individual preferences-for books or articles, for example-is becoming more and more important. Good predictions enable us to improve advice to users, and…

Social and Information Networks · Computer Science 2017-02-06 Antonia Godoy-Lorite , Roger Guimera , Cristopher Moore , Marta Sales-Pardo