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User-based Collaborative Filtering (CF) is one of the most popular approaches to create recommender systems. CF, however, suffers from data sparsity and the cold-start problem since users often rate only a small fraction of available items.…

Social and Information Networks · Computer Science 2019-07-29 Tomislav Duricic , Emanuel Lacic , Dominik Kowald , Elisabeth Lex

A model-based collaborative filtering (CF) approach utilizing fast adaptive randomized singular value decomposition (SVD) is proposed for the matrix completion problem in recommender system. Firstly, a fast adaptive PCA frameworkis…

Machine Learning · Computer Science 2025-04-08 Xiangyun Ding , Wenjian Yu , Yuyang Xie , Shenghua Liu

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

A huge amount of user generated content related to movies is created with the popularization of web 2.0. With these continues exponential growth of data, there is an inevitable need for recommender systems as people find it difficult to…

Information Retrieval · Computer Science 2019-06-04 Lasitha Uyangoda , Supunmali Ahangama , Tharindu Ranasinghe

Graph collaborative filtering (GCF) is a dominant paradigm in recommender systems, where contrastive learning (CL) objectives such as the Sampled Softmax (SSM) loss are widely used for optimization. However, it remains unclear how CL…

Information Retrieval · Computer Science 2026-05-26 Geon Lee , Sunwoo Kim , Kyungho Kim , Kijung Shin

Graph convolutional networks (GCNs) have recently enabled a popular class of algorithms for collaborative filtering (CF). Nevertheless, the theoretical underpinnings of their empirical successes remain elusive. In this paper, we endeavor to…

Information Retrieval · Computer Science 2021-08-18 Yifei Shen , Yongji Wu , Yao Zhang , Caihua Shan , Jun Zhang , Khaled B. Letaief , Dongsheng Li

Nowadays, we have large amounts of online items in various web-based applications, which makes it an important task to build effective personalized recommender systems so as to save users' efforts in information seeking. One of the most…

Information Retrieval · Computer Science 2021-12-30 Danis J. Wilson , Wei Zhang

Recommender systems play a vital role in modern online services, such as Amazon and Taobao. Traditional personalized methods, which focus on user-item (UI) relations, have been widely applied in industrial settings, owing to their…

Information Retrieval · Computer Science 2021-03-02 Xu Xie , Fei Sun , Xiaoyong Yang , Zhao Yang , Jinyang Gao , Wenwu Ou , Bin Cui

Collaborative Filtering~(CF) plays a crucial role in modern recommender systems, leveraging historical user-item interactions to provide personalized suggestions. However, CF-based methods often encounter biases due to imbalances in…

Information Retrieval · Computer Science 2025-11-18 Miaomiao Cai , Min Hou , Lei Chen , Le Wu , Haoyue Bai , Yong Li , Meng Wang

Collaborative filtering (CF) is widely used to learn informative latent representations of users and items from observed interactions. Existing CF-based methods commonly adopt negative sampling to discriminate different items. Training with…

Information Retrieval · Computer Science 2023-05-02 Xin Zhou , Aixin Sun , Yong Liu , Jie Zhang , Chunyan Miao

Two main challenges in recommender systems are modeling users with heterogeneous taste, and providing explainable recommendations. In this paper, we propose the neural Attentive Multi-Persona Collaborative Filtering (AMP-CF) model as a…

Information Retrieval · Computer Science 2020-10-15 Oren Barkan , Yonatan Fuchs , Avi Caciularu , Noam Koenigstein

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

We propose a J-NCF method for recommender systems. The J-NCF model applies a joint neural network that couples deep feature learning and deep interaction modeling with a rating matrix. Deep feature learning extracts feature representations…

Information Retrieval · Computer Science 2019-07-11 Wanyu Chen , Fei Cai , Honghui Chen , Maarten de Rijke

Recommendation systems today exert a strong influence on consumer behavior and individual perceptions of the world. By using collaborative filtering (CF) methods to create recommendations, it generates a continuous feedback loop in which…

Information Retrieval · Computer Science 2020-02-05 Sunshine Chong , Andrés Abeliuk

The increasingly stringent regulations on privacy protection have sparked interest in federated learning. As a distributed machine learning framework, it bridges isolated data islands by training a global model over devices while keeping…

Information Retrieval · Computer Science 2022-05-27 Zhitao Zhu , Shijing Si , Jianzong Wang , Jing Xiao

Tag-aware recommendation is a task of predicting a personalized list of items for a user by their tagging behaviors. It is crucial for many applications with tagging capabilities like last.fm or movielens. Recently, many efforts have been…

Information Retrieval · Computer Science 2022-08-09 Yin Zhang , Can Xu , XianJun Wu , Yan Zhang , LiGang Dong , Weigang Wang

This survey provides an examination of the use of Deep Neural Networks (DNN) in Collaborative Filtering (CF) recommendation systems. As the digital world increasingly relies on data-driven approaches, traditional CF techniques face…

Artificial Intelligence · Computer Science 2024-12-03 Pang Li , Shahrul Azman Mohd Noah , Hafiz Mohd Sarim

Recommender systems may be confounded by various types of confounding factors (also called confounders) that may lead to inaccurate recommendations and sacrificed recommendation performance. Current approaches to solving the problem usually…

Information Retrieval · Computer Science 2023-08-15 Shuyuan Xu , Juntao Tan , Shelby Heinecke , Jia Li , Yongfeng Zhang

Hashing is an effective technique to address the large-scale recommendation problem, due to its high computation and storage efficiency on calculating the user preferences on items. However, existing hashing-based recommendation methods…

Information Retrieval · Computer Science 2020-03-25 Yang Xu , Lei Zhu , Zhiyong Cheng , Jingjing Li , Jiande Sun

The aim of the recommender systems is to provide relevant and potentially interesting information to each user. This is fulfilled by utilizing the already recorded tendencies of similar users or detecting items similar to interested items…

Social and Information Networks · Computer Science 2019-12-20 Mohammad Reza Zarei , Mohammad R. Moosavi