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Collaborative filtering models based on matrix factorization and learned similarities using Artificial Neural Networks (ANNs) have gained significant attention in recent years. This is, in part, because ANNs have demonstrated good results…

Information Retrieval · Computer Science 2021-07-29 Vito Walter Anelli , Alejandro Bellogín , Tommaso Di Noia , Claudio Pomo

Recommender systems play an essential role in online services by providing personalized item lists to support users' decision-making processes. While collaborative filtering methods can achieve high accuracy, it is crucial to consider not…

Optimization and Control · Mathematics 2026-03-24 Tomoya Yanagi , Shunnosuke Ikeda , Ken Kobayashi , Yuichi Takano

We present a general approach for collaborative filtering (CF) using spectral regularization to learn linear operators from "users" to the "objects" they rate. Recent low-rank type matrix completion approaches to CF are shown to be special…

Machine Learning · Computer Science 2008-12-19 Jacob Abernethy , Francis Bach , Theodoros Evgeniou , Jean-Philippe Vert

Temporal collaborative filtering (TCF) methods aim at modelling non-static aspects behind recommender systems, such as the dynamics in users' preferences and social trends around items. State-of-the-art TCF methods employ recurrent neural…

Artificial Intelligence · Computer Science 2020-10-14 Esther Rodrigo Bonet , Duc Minh Nguyen , Nikos Deligiannis

User interaction data in recommender systems is a form of dyadic relation that reflects the preferences of users with items. Learning the representations of these two discrete sets of objects, users and items, is critical for…

Information Retrieval · Computer Science 2023-02-10 Hongyu Zhou , Xin Zhou , Lingzi Zhang , Zhiqi Shen

Recommender systems are software tools used to generate and provide suggestions for items and other entities to the users by exploiting various strategies. Hybrid recommender systems combine two or more recommendation strategies in…

Information Retrieval · Computer Science 2019-01-15 Erion Çano , Maurizio Morisio

Users of online dating sites are facing information overload that requires them to manually construct queries and browse huge amount of matching user profiles. This becomes even more problematic for multimedia profiles. Although matchmaking…

Information Retrieval · Computer Science 2007-05-23 Lukas Brozovsky , Vaclav Petricek

Due to the growing volume of user generated content, hashtags are employed as topic indicators to manage content efficiently on social media platforms. However, finding these vital topics is challenging in microvideos since they contain…

Information Retrieval · Computer Science 2024-10-15 Shubhi Bansal , Kushaan Gowda , Mohammad Zia Ur Rehman , Chandravardhan Singh Raghaw , Nagendra Kumar

Collaborative recommendation is an information-filtering technique that attempts to present information items that are likely of interest to an Internet user. Traditionally, collaborative systems deal with situations with two types of…

Statistics Theory · Mathematics 2010-10-05 Gérard Biau , Benoît Cadre , Laurent Rouvière

To foster an active and engaged community, social networks employ recommendation algorithms that filter large amounts of contents and provide a user with personalized views of the network. Popular social networks such as Facebook and…

Information Retrieval · Computer Science 2018-11-26 Jan Trienes , Andrés Torres Cano , Djoerd Hiemstra

Collaborative filtering recommendation systems provide recommendations to users based on their own past preferences, as well as those of other users who share similar interests. The use of recommendation systems has grown widely in recent…

Cryptography and Security · Computer Science 2020-03-19 Islam Elnabarawy , Wei Jiang , Donald C. Wunsch

We investigate the problem of online collaborative filtering under no-repetition constraints, whereby users need to be served content in an online fashion and a given user cannot be recommended the same content item more than once. We start…

Machine Learning · Computer Science 2024-10-23 Stephen Pasteris , Fabio Vitale , Mark Herbster , Claudio Gentile , Andre' Panisson

Recent years have witnessed the fast development of the emerging topic of Graph Learning based Recommender Systems (GLRS). GLRS mainly employ the advanced graph learning approaches to model users' preferences and intentions as well as…

Information Retrieval · Computer Science 2020-04-27 Shoujin Wang , Liang Hu , Yan Wang , Xiangnan He , Quan Z. Sheng , Mehmet Orgun , Longbing Cao , Nan Wang , Francesco Ricci , Philip S. Yu

Graph-based collaborative filtering (CF) algorithms have gained increasing attention. Existing work in this literature usually models the user-item interactions as a bipartite graph, where users and items are two isolated node sets and…

Information Retrieval · Computer Science 2020-11-19 Zekun Li , Yujia Zheng , Shu Wu , Xiaoyu Zhang , Liang Wang

Recently, there has been a rising awareness that when machine learning (ML) algorithms are used to automate choices, they may treat/affect individuals unfairly, with legal, ethical, or economic consequences. Recommender systems are…

Information Retrieval · Computer Science 2022-04-19 Mohammadmehdi Naghiaei , Hossein A. Rahmani , Yashar Deldjoo

Collaborative filtering (CF) has been successfully used to provide users with personalized products and services. However, dealing with the increasing sparseness of user-item matrix still remains a challenge. To tackle such issue, hybrid CF…

Information Retrieval · Computer Science 2017-06-14 Shuai Zhang , Lina Yao , Xiwei Xu

In recommender systems, user-item interactions can be modeled as a bipartite graph, where user and item nodes are connected by undirected edges. This graph-based view has motivated the rapid adoption of graph neural networks (GNNs), which…

Graph Neural Networks (GNNs) have been successfully adopted in recommender systems by virtue of the message-passing that implicitly captures collaborative effect. Nevertheless, most of the existing message-passing mechanisms for…

Information Retrieval · Computer Science 2023-02-21 Yu Wang , Yuying Zhao , Yi Zhang , Tyler Derr

Intent modeling has attracted widespread attention in recommender systems. As the core motivation behind user selection of items, intent is crucial for elucidating recommendation results. The current mainstream modeling method is to…

Information Retrieval · Computer Science 2024-05-16 Yi Zhang , Lei Sang , Yiwen Zhang

Graph Signal Processing (GSP) based recommendation algorithms have recently attracted lots of attention due to its high efficiency. However, these methods failed to consider the importance of various interactions that reflect unique…

Information Retrieval · Computer Science 2024-02-14 Jiafeng Xia , Dongsheng Li , Hansu Gu , Tun Lu , Peng Zhang , Li Shang , Ning Gu