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Collaborative filtering is a broad and powerful framework for building recommendation systems that has seen widespread adoption. Over the past decade, the propensity of such systems for favoring popular products and thus creating echo…

Information Retrieval · Computer Science 2017-02-20 Arda Antikacioglu , R Ravi

Generative retrieval for search and recommendation is a promising paradigm for retrieving items, offering an alternative to traditional methods that depend on external indexes and nearest-neighbor searches. Instead, generative models…

Information Retrieval · Computer Science 2024-10-23 Gustavo Penha , Ali Vardasbi , Enrico Palumbo , Marco de Nadai , Hugues Bouchard

In this paper, we introduce a novel approach to improve the diversity of Top-N recommendations while maintaining accuracy. Our approach employs a user-centric pre-processing strategy aimed at exposing users to a wide array of content…

Information Retrieval · Computer Science 2025-02-05 Manel Slokom , Savvina Danil , Laura Hollink

Fairness-aware recommender systems often mitigate bias by increasing exposure to under-represented or long-tail content, commonly through mechanisms that promote novelty and diversity. In practice, the strength of such interventions is…

Information Retrieval · Computer Science 2026-04-21 Enock O. Ayiku , Evelyn Osei , Emebo Onyeka

One of the main challenges in recommender systems is data sparsity which leads to high variance. Several attempts have been made to improve the bias-variance trade-off using auxiliary information. In particular, document modeling-based…

Information Retrieval · Computer Science 2021-09-14 Meysam Varasteh , Mehdi Soleiman Nejad , Hadi Moradi , Mohammad Amin Sadeghi , Ahmad Kalhor

Textual data are commonly used as auxiliary information for modeling user preference nowadays. While many prior works utilize user reviews for rating prediction, few focus on top-N recommendation, and even few try to incorporate item…

Information Retrieval · Computer Science 2023-05-23 Ming-Hao Juan , Pu-Jen Cheng , Hui-Neng Hsu , Pin-Hsin Hsiao

The widespread use of the internet has led to an overwhelming amount of data, which has resulted in the problem of information overload. Recommender systems have emerged as a solution to this problem by providing personalized…

Information Retrieval · Computer Science 2024-08-15 Hui Fang , Xu Feng , Lu Qin , Zhu Sun

Top-N recommendation, which aims to learn user ranking-based preference, has long been a fundamental problem in a wide range of applications. Traditional models usually motivate themselves by designing complex or tailored architectures…

Information Retrieval · Computer Science 2021-09-14 Mengyue Yang , Quanyu Dai , Zhenhua Dong , Xu Chen , Xiuqiang He , Jun Wang

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

Retrieval tasks typically require a ranking of items given a query. Collaborative filtering tasks, on the other hand, learn to model user's preferences over items. In this paper we study the joint problem of recommending items to a user…

Information Retrieval · Computer Science 2012-06-22 Jason Weston , Chong Wang , Ron Weiss , Adam Berenzweig

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

Top-N item recommendation has been a widely studied task from implicit feedback. Although much progress has been made with neural methods, there is increasing concern on appropriate evaluation of recommendation algorithms. In this paper, we…

Information Retrieval · Computer Science 2020-10-12 Wayne Xin Zhao , Junhua Chen , Pengfei Wang , Qi Gu , Ji-Rong Wen

Graph convolutional networks (GCNs) have become prevalent in recommender system (RS) due to their superiority in modeling collaborative patterns. Although improving the overall accuracy, GCNs unfortunately amplify popularity bias -- tail…

Information Retrieval · Computer Science 2023-05-25 Jiajia Chen , Jiancan Wu , Jiawei Chen , Xin Xin , Yong Li , Xiangnan He

Predicting the future popularity of online content is highly important in many applications. Preferential attachment phenomena is encountered in scale free networks.Under it's influece popular items get more popular thereby resulting in…

Information Retrieval · Computer Science 2016-04-06 Khushnood Abbas , Shang Mingsheng , Luo Xin

Research on recommender systems algorithms, like other areas of applied machine learning, is largely dominated by efforts to improve the state-of-the-art, typically in terms of accuracy measures. Several recent research works however…

Information Retrieval · Computer Science 2022-05-16 Vito Walter Anelli , Alejandro Bellogín , Tommaso Di Noia , Dietmar Jannach , Claudio Pomo

The vast majority of recommender systems model preferences as static or slowly changing due to observable user experience. However, spontaneous changes in user preferences are ubiquitous in many domains like media consumption and key…

Human-Computer Interaction · Computer Science 2016-10-24 Arun Kumar , Paul Schrater

Recommender systems must balance personalization, diversity, and robustness to cold-start scenarios to remain effective in dynamic content environments. This paper introduces an adaptive, exploration-based recommendation framework that…

Information Retrieval · Computer Science 2025-03-26 Edoardo Bianchi

In the realm of music recommendation, sequential recommenders have shown promise in capturing the dynamic nature of music consumption. A key characteristic of this domain is repetitive listening, where users frequently replay familiar…

The increasing availability of implicit feedback datasets has raised the interest in developing effective collaborative filtering techniques able to deal asymmetrically with unambiguous positive feedback and ambiguous negative feedback. In…

Information Retrieval · Computer Science 2016-12-20 Mirko Polato , Fabio Aiolli

Recommender systems play an increasingly important role in online applications to help users find what they need or prefer. Collaborative filtering algorithms that generate predictions by analyzing the user-item rating matrix perform poorly…

Information Retrieval · Computer Science 2016-09-28 Zhao Kang , Chong Peng , Ming Yang , Qiang Cheng