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Contrastive learning (CL) has shown its power in recommendation. However, most CL-based recommendation models build their CL tasks merely focusing on the user's aspects, ignoring the rich diverse information in items. In this work, we…

信息检索 · 计算机科学 2023-01-18 Ruobing Xie , Zhijie Qiu , Bo Zhang , Leyu Lin

This paper presents a solution to the challenges faced by contrastive learning in sequential recommendation systems. In particular, it addresses the issue of false negative, which limits the effectiveness of recommendation algorithms. By…

信息检索 · 计算机科学 2023-07-12 Jaeheyoung Jeon , Jung Hyun Ryu , Jewoong Cho , Myungjoo Kang

Addressing the challenges related to data sparsity, cold-start problems, and diversity in recommendation systems is both crucial and demanding. Many current solutions leverage knowledge graphs to tackle these issues by combining both…

Generative models have emerged as a promising utility to enhance recommender systems. It is essential to model both item content and user-item collaborative interactions in a unified generative framework for better recommendation. Although…

Collaborative filtering (CF) is a successful approach commonly used by many recommender systems. Conventional CF-based methods use the ratings given to items by users as the sole source of information for learning to make recommendation.…

机器学习 · 计算机科学 2015-06-22 Hao Wang , Naiyan Wang , Dit-Yan Yeung

Federated Recommender Systems (FedRecs) have garnered increasing attention recently, thanks to their privacy-preserving benefits. However, the decentralized and open characteristics of current FedRecs present two dilemmas. First, the…

信息检索 · 计算机科学 2024-04-01 Wei Yuan , Chaoqun Yang , Liang Qu , Guanhua Ye , Quoc Viet Hung Nguyen , Hongzhi Yin

The sequential recommendation aims to recommend items, such as products, songs and places, to users based on the sequential patterns of their historical records. Most existing sequential recommender models consider the next item prediction…

信息检索 · 计算机科学 2021-09-14 Ruihong Qiu , Zi Huang , Hongzhi Yin

The item cold-start problem poses a fundamental challenge for music recommendation: newly added tracks lack the interaction history that collaborative filtering (CF) requires. Existing approaches often address this problem by learning…

Graph Neural Network (GNN)-based models have become the mainstream approach for recommender systems. Despite the effectiveness, they are still suffering from the cold-start problem, i.e., recommend for few-interaction items. Existing…

信息检索 · 计算机科学 2023-08-08 Taichi Liu , Chen Gao , Zhenyu Wang , Dong Li , Jianye Hao , Depeng Jin , Yong Li

With the exponentially increasing volume of online data, searching and finding required information have become an extensive and time-consuming task. Recommender Systems as a subclass of information retrieval and decision support systems by…

信息检索 · 计算机科学 2023-04-20 Ali Fallahi RahmatAbadi , Javad Mohammadzadeh

Collaborative Filtering (CF) has emerged as fundamental paradigms for parameterizing users and items into latent representation space, with their correlative patterns from interaction data. Among various CF techniques, the development of…

信息检索 · 计算机科学 2022-04-29 Lianghao Xia , Chao Huang , Yong Xu , Jiashu Zhao , Dawei Yin , Jimmy Xiangji Huang

Collaborative Filtering (CF) is a widely adopted technique in recommender systems. Traditional CF models mainly focus on predicting a user's preference to the items in a single domain such as the movie domain or the music domain. A major…

信息检索 · 计算机科学 2018-03-06 Xinghua Wang , Zhaohui Peng , Senzhang Wang , Philip S. Yu , Wenjing Fu , Xiaoguang Hong

Recently, embedding techniques have achieved impressive success in recommender systems. However, the embedding techniques are data demanding and suffer from the cold-start problem. Especially, for the cold-start item which only has limited…

信息检索 · 计算机科学 2021-05-12 Yongchun Zhu , Ruobing Xie , Fuzhen Zhuang , Kaikai Ge , Ying Sun , Xu Zhang , Leyu Lin , Juan Cao

A major challenge in collaborative filtering methods is how to produce recommendations for cold items (items with no ratings), or integrate cold item into an existing catalog. Over the years, a variety of hybrid recommendation models have…

信息检索 · 计算机科学 2021-12-15 Oren Barkan , Roy Hirsch , Ori Katz , Avi Caciularu , Jonathan Weill , Noam Koenigstein

Recommendation systems get expanding significance because of their applications in both the scholarly community and industry. With the development of additional data sources and methods of extracting new information other than the rating…

信息检索 · 计算机科学 2020-05-19 Mohammad Maghsoudi Mehrabani , Hamid Mohayeji , Ali Moeini

Sequential recommendation systems often struggle to make predictions or take action when dealing with cold-start items that have limited amount of interactions. In this work, we propose SimRec - a new approach to mitigate the cold-start…

信息检索 · 计算机科学 2024-10-30 Shaked Brody , Shoval Lagziel

Many sequential recommender systems suffer from the cold start problem, where items with few or no interactions cannot be effectively used by the model due to the absence of a trained embedding. Content-based approaches, which leverage item…

信息检索 · 计算机科学 2025-07-28 Anton Pembek , Artem Fatkulin , Anton Klenitskiy , Alexey Vasilev

Despite the success of conventional collaborative filtering (CF) approaches for recommendation systems, they exhibit limitations in leveraging semantic knowledge within the textual attributes of users and items. Recent focus on the…

信息检索 · 计算机科学 2024-08-19 Zhongzhou Liu , Hao Zhang , Kuicai Dong , Yuan Fang

Collaborative Filtering (CF) is one of the most commonly used recommendation methods. CF consists in predicting whether, or how much, a user will like (or dislike) an item by leveraging the knowledge of the user's preferences as well as…

Cold-start has being a critical issue in recommender systems with the explosion of data in e-commerce. Most existing studies proposed to alleviate the cold-start problem are also known as hybrid recommender systems that learn…

信息检索 · 计算机科学 2020-11-03 Yan Zhang , Ivor W. Tsang , Lixin Duan