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Collaborative filtering is a very useful general technique for exploiting the preference patterns of a group of users to predict the utility of items to a particular user. Previous research has studied several probabilistic graphic models…

Information Retrieval · Computer Science 2012-12-12 Rong Jin , Luo Si , ChengXiang Zhai

While popularity bias is recognized to play a crucial role in recommmender (and other ranking-based) systems, detailed analysis of its impact on collective user welfare has largely been lacking. We propose and theoretically analyze a…

Information Retrieval · Computer Science 2023-11-03 Guy Tennenholtz , Martin Mladenov , Nadav Merlis , Robert L. Axtell , Craig Boutilier

How to make the best decision between the opinions and tastes of your friends and acquaintances? Therefore, recommender systems are used to solve such issues. The common algorithms use a similarity measure to predict active users' tastes…

Information Retrieval · Computer Science 2019-08-16 Mostafa Khalaji , Nilufar Mohammadnejad

The emergence of online communities has enabled firms to monitor consumer-generated online word-of-mouth (WOM) in real-time by mining publicly available information from the Internet. A prerequisite for harnessing this new ability is the…

Statistics Theory · Mathematics 2007-06-13 Chrysanthos Dellarocas , Ritu Narayan

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 the overwhelming online products available in recent years, there is an increasing need to filter and deliver relevant personalized advice for users. Recommender systems solve this problem by modeling and predicting individual…

Machine Learning · Statistics 2020-02-11 Antonia Godoy-Lorite , Roger Guimera , Marta Sales-Pardo

In this paper, we propose a method of ranking recently created Twitter accounts according to their prospective popularity. Early detection of new promising accounts is useful for trend prediction, viral marketing, user recommendation, and…

Social and Information Networks · Computer Science 2015-12-09 Daichi Imamori , Keishi Tajima

Recommender systems shape online interactions by matching users with creators content to maximize engagement. Creators, in turn, adapt their content to align with users preferences and enhance their popularity. At the same time, users…

Information Retrieval · Computer Science 2026-01-07 Lukas Schüepp , Carmen Amo Alonso , Florian Dörfler , Giulia De Pasquale

Understanding the structure and evolution of web-based user-object bipartite networks is an important task since they play a fundamental role in online information filtering. In this paper, we focus on investigating the patterns of online…

Physics and Society · Physics 2015-05-28 Cheng-Jun Zhang , An Zeng

In the domain of online advertising, our aim is to serve the best ad to a user who visits a certain webpage, to maximize the chance of a desired action to be performed by this user after seeing the ad. While it is possible to generate a…

Artificial Intelligence · Computer Science 2015-02-25 Sahin Cem Geyik , Ali Dasdan , Kuang-Chih Lee

Probabilistic models can learn users' preferences from the history of their item adoptions on a social media site, and in turn, recommend new items to users based on learned preferences. However, current models ignore psychological factors…

Information Retrieval · Computer Science 2013-11-07 Jeon-Hyung Kang , Kristina Lerman

With the ever decreasing attention span of contemporary Internet users, the title of online content (such as a news article or video) can be a major factor in determining its popularity. To take advantage of this phenomenon, we propose a…

Computation and Language · Computer Science 2017-07-24 Wociech Stokowiec , Tomasz Trzcinski , Krzysztof Wolk , Krzysztof Marasek , Przemyslaw Rokita

Recommender systems learn from historical user-item interactions to identify preferred items for target users. These observed interactions are usually unbalanced following a long-tailed distribution. Such long-tailed data lead to popularity…

Information Retrieval · Computer Science 2022-11-03 Weijieying Ren , Lei Wang , Kunpeng Liu , Ruocheng Guo , Lim Ee Peng , Yanjie Fu

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

Recommender systems help people find relevant content in a personalized way. One main promise of such systems is that they are able to increase the visibility of items in the long tail, i.e., the lesser-known items in a catalogue. Existing…

Information Retrieval · Computer Science 2024-07-03 Anastasiia Klimashevskaia , Dietmar Jannach , Mehdi Elahi , Christoph Trattner

When it comes to a personalized item recommendation system, It is essential to extract users' preferences and purchasing patterns. Assuming that users in the real world form a cluster and there is common favoritism in each cluster, in this…

Information Retrieval · Computer Science 2024-04-30 Hoin Jung , Hyunsoo Cho , Myungje Choi , Joowon Lee , Jung Ho Park , Myungjoo Kang

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

Contextual bandit algorithms are commonly used in recommender systems, where content popularity can change rapidly. These algorithms continuously learn latent mappings between users and items, based on contexts associated with them both.…

Distributed, Parallel, and Cluster Computing · Computer Science 2020-07-17 Kanak Mahadik , Qingyun Wu , Shuai Li , Amit Sabne

The dynamics of individuals is of essential importance for understanding the evolution of social systems. Most existing models assume that individuals in diverse systems, ranging from social networks to e-commerce, all tend to what is…

Physics and Society · Physics 2017-02-22 Matus Medo , Manuel S. Mariani , An Zeng , Yi-Cheng Zhang

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