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Collaborative filtering (CF) is an important research direction in recommender systems that aims to make recommendations given the information on user-item interactions. Graph CF has attracted more and more attention in recent years due to…

Information Retrieval · Computer Science 2023-06-07 Jiayan Guo , Lun Du , Xu Chen , Xiaojun Ma , Qiang Fu , Shi Han , Dongmei Zhang , Yan Zhang

Transformer-based sequential recommendation (TSR) models have shown superior performance in recommendation systems, where the quality of item representations plays a crucial role. Classical representation methods integrate item features…

Information Retrieval · Computer Science 2025-04-22 Hao Deng , Haibo Xing , Kanefumi Matsuyama , Yulei Huang , Jinxin Hu , Hong Wen , Jia Xu , Zulong Chen , Yu Zhang , Xiaoyi Zeng , Jing Zhang

In the world of big data, many people find it difficult to access the information they need quickly and accurately. In order to overcome this, research on the system that recommends information accurately to users is continuously conducted.…

Computers and Society · Computer Science 2019-09-19 Keum Gang Cha , Soo-Ryeon Lee , Jung-Woo Lee , Seung Bin Baik

The rise of FinTech has transformed financial services online, yet stock recommender systems have received limited attention. Personalized stock recommendations can significantly impact customer engagement and satisfaction within the…

Information Retrieval · Computer Science 2025-11-11 Munki Chung , Junhyeong Lee , Yongjae Lee , Woo Chang Kim

The cold-start problem is a long-standing challenge in recommender systems. As a promising solution, content-based generative models usually project a cold-start item's content onto a warm-start item embedding to capture collaborative…

Information Retrieval · Computer Science 2023-02-23 Zhihui Zhou , Lilin Zhang , Ning Yang

Nowadays, news apps have taken over the popularity of paper-based media, providing a great opportunity for personalization. Recurrent Neural Network (RNN)-based sequential recommendation is a popular approach that utilizes users' recent…

Information Retrieval · Computer Science 2020-04-13 Bing Bai , Guanhua Zhang , Ye Lin , Hao Li , Kun Bai , Bo Luo

Collaborative Filtering (CF) is a pivotal research area in recommender systems that capitalizes on collaborative similarities between users and items to provide personalized recommendations. With the remarkable achievements of node…

Information Retrieval · Computer Science 2024-01-30 Yifang Qin , Wei Ju , Xiao Luo , Yiyang Gu , Zhiping Xiao , Ming Zhang

Large Language Models (LLMs) exhibit potential for explainable recommendation systems but overlook collaborative signals, while prevailing methods treat recommendation and explanation as separate tasks, resulting in a memory footprint. We…

Artificial Intelligence · Computer Science 2026-02-06 Fahad Anwaar , Adil Mehmood Khan , Muhammad Khalid , Usman Zia , Kezhi Wang

Collaborative Filtering (CF) methods dominate real-world recommender systems given their ability to learn high-quality, sparse ID-embedding tables that effectively capture user preferences. These tables scale linearly with the number of…

Information Retrieval · Computer Science 2025-09-03 Donald Loveland , Xinyi Wu , Tong Zhao , Danai Koutra , Neil Shah , Mingxuan Ju

Collaborative filtering is the simplest but oldest machine learning algorithm in the field of recommender systems. In spite of its long history, it remains a discussion topic in research venues. Usually people use users/items whose…

Information Retrieval · Computer Science 2023-03-09 Hao Wang

Recent advancements in recommender systems have focused on integrating knowledge graphs (KGs) to leverage their auxiliary information. The core idea of KG-enhanced recommenders is to incorporate rich semantic information for more accurate…

Information Retrieval · Computer Science 2024-07-08 Darnbi Sakong , Viet Hung Vu , Thanh Trung Huynh , Phi Le Nguyen , Hongzhi Yin , Quoc Viet Hung Nguyen , Thanh Tam Nguyen

Clustered federated learning (CFL) addresses the performance challenges posed by data heterogeneity in federated learning (FL) by organizing edge devices with similar data distributions into clusters, enabling collaborative model training…

Machine Learning · Computer Science 2025-01-06 Yuxin Zhang , Haoyu Chen , Zheng Lin , Zhe Chen , Jin Zhao

User-based Collaborative Filtering (CF) is one of the most popular approaches to create recommender systems. This approach is based on finding the most relevant k users from whose rating history we can extract items to recommend. CF,…

Social and Information Networks · Computer Science 2018-07-19 Tomislav Duricic , Emanuel Lacic , Dominik Kowald , Elisabeth Lex

We introduce CoHiRF (Consensus Hierarchical Random Features), a hierarchical consensus framework that enables existing clustering methods to operate beyond their usual computational and memory limits. CoHiRF is a meta-algorithm that…

Machine Learning · Computer Science 2026-02-10 Katia Meziani , Bruno Belucci , Karim Lounici , Vladimir R. Kostic

Recommender systems play a central role in providing individualized access to information and services. This paper focuses on collaborative filtering, an approach that exploits the shared structure among mind-liked users and similar items.…

Machine Learning · Statistics 2016-02-10 Truyen Tran , Dinh Phung , Svetha Venkatesh

Recommendation system has gained a large popularity for a variety of personalized suggestion tasks, but the ever-increasing number of user data makes real-time processing of recommendation systems difficult. NAND flash memory-based…

Hardware Architecture · Computer Science 2026-04-29 Jangho Baik , Sunghyun Kim , Gisan Ji , Wonbo Shim , Sungju Ryu

Cross-Domain Collaborative Filtering (CDCF) provides a way to alleviate data sparsity and cold-start problems present in recommendation systems by exploiting the knowledge from related domains. Existing CDCF models are either based on…

Information Retrieval · Computer Science 2019-07-22 Vijaikumar M , Shirish Shevade , M N Murty

Federated learning offers a privacy-preserving framework for recommendation systems by enabling local data processing; however, data localization introduces substantial obstacles. Traditional federated recommendation approaches treat each…

Machine Learning · Computer Science 2026-03-10 Xudong Wang , Qingbo Hao , Yingyuan Xiao

Collaborative filtering (CF) has been successfully employed by many modern recommender systems. Conventional CF-based methods use the user-item interaction data as the sole information source to recommend items to users. However, CF-based…

Machine Learning · Computer Science 2018-09-25 Kenan Cui , Xu Chen , Jiangchao Yao , Ya Zhang

This paper presents an intelligent approach to handle heterogeneous and large-sized data using machine learning to generate true recommendations for the future customers. The Collaborative Filtering (CF) approach is one of the most popular…

Information Retrieval · Computer Science 2019-10-16 Bushra Ramzan , Imran Sarwar Bajwa , Noreen Jamil , Farhaan Mirza