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Cross-domain recommendation forms a crucial component in recommendation systems. It leverages auxiliary information through source domain tasks or features to enhance target domain recommendations. However, incorporating inconsistent source…

Information Retrieval · Computer Science 2025-10-17 Zhibo Wu , Yunfan Wu , Lin Jiang , Ping Yang , Yao Hu

Collaborative Filtering (CF) is a foundational approach in recommender systems, but it struggles with challenges such as data sparsity and the cold-start problem. Cross-Domain Recommendation (CDR) has emerged as a promising solution by…

Information Retrieval · Computer Science 2025-09-18 Jeongeun Lee , Seongku Kang , Won-Yong Shin , Jeongwhan Choi , Noseong Park , Dongha Lee

Cross-domain recommendation has been proposed to transfer user behavior pattern by pooling together the rating data from multiple domains to alleviate the sparsity problem appearing in single rating domains. However, previous models only…

Information Retrieval · Computer Science 2014-09-26 Siting Ren , Sheng Gao

Recommender Systems (RSs) are operated locally by different organizations in many realistic scenarios. If various organizations can fully share their data and perform computation in a centralized manner, they may significantly improve the…

Information Retrieval · Computer Science 2022-11-08 Enmao Diao , Vahid Tarokh , Jie Ding

Recommender systems (RS) have become crucial tools for information filtering in various real world scenarios. And cross domain recommendation (CDR) has been widely explored in recent years in order to provide better recommendation results…

Information Retrieval · Computer Science 2025-03-19 Hao Zhang , Mingyue Cheng , Qi Liu , Junzhe Jiang , Xianquan Wang , Rujiao Zhang , Chenyi Lei , Enhong Chen

Cross-domain recommendation (CDR) is a task that aims to improve the recommendation performance in a target domain by leveraging the information from source domains. Contrastive learning methods have been widely adopted among intra-domain…

Information Retrieval · Computer Science 2025-02-25 Heng Chang , Liang Gu , Cheng Hu , Zhinan Zhang , Hong Zhu , Yuhui Xu , Yuan Fang , Zhen Chen

Collaborative filtering often suffers from sparsity and cold start problems in real recommendation scenarios, therefore, researchers and engineers usually use side information to address the issues and improve the performance of recommender…

Information Retrieval · Computer Science 2019-01-28 Hongwei Wang , Fuzheng Zhang , Miao Zhao , Wenjie Li , Xing Xie , Minyi Guo

Cross-domain recommendation (CDR) aims to leverage the correlation of users' behaviors in both the source and target domains to improve the user preference modeling in the target domain. Conventional CDR methods typically explore the…

Information Retrieval · Computer Science 2023-06-09 Haokai Ma , Ruobing Xie , Lei Meng , Xin Chen , Xu Zhang , Leyu Lin , Jie Zhou

Cross-domain recommendation (CDR) has been proven as a promising way to tackle the user cold-start problem, which aims to make recommendations for users in the target domain by transferring the user preference derived from the source…

Information Retrieval · Computer Science 2024-06-13 Xiaodong Li , Jiawei Sheng , Jiangxia Cao , Wenyuan Zhang , Quangang Li , Tingwen Liu

Multiagent reinforcement learning (MARL) has attracted considerable attention due to its potential in addressing complex cooperative tasks. However, existing MARL approaches often rely on frequent exchanges of action or state information…

Machine Learning · Computer Science 2026-01-14 Zhenglong Luo , Zhiyong Chen , Aoxiang Liu , Ke Pan

Multi-agent reinforcement learning for incomplete information environments has attracted extensive attention from researchers. However, due to the slow sample collection and poor sample exploration, there are still some problems in…

Artificial Intelligence · Computer Science 2022-05-12 Shuhan Qi , Shuhao Zhang , Xiaohan Hou , Jiajia Zhang , Xuan Wang , Jing Xiao

In the digital era, users typically interact with diverse items across multiple domains (e.g., e-commerce, streaming platforms, and social networks), generating intricate heterogeneous interaction graphs. Leveraging multi-domain data can…

Information Retrieval · Computer Science 2025-07-11 Hengyu Zhang , Chunxu Shen , Xiangguo Sun , Jie Tan , Yu Rong , Chengzhi Piao , Hong Cheng , Lingling Yi

Recommender systems(RS), especially collaborative filtering(CF) based RS, has been playing an important role in many e-commerce applications. As the information being searched over the internet is rapidly increasing, users often face the…

Information Retrieval · Computer Science 2021-08-04 Sowmini Devi Veeramachaneni , Arun K Pujari , Vineet Padmanabhan , Vikas Kumar

Multi-Agent Reinforcement Learning (MARL) has gained significant interest in recent years, enabling sequential decision-making across multiple agents in various domains. However, most existing explanation methods focus on centralized MARL,…

Artificial Intelligence · Computer Science 2025-11-14 Kayla Boggess , Sarit Kraus , Lu Feng

Recent cross-domain recommendation (CDR) studies assume that disentangled domain-shared and domain-specific user representations can mitigate domain gaps and facilitate effective knowledge transfer. However, achieving perfect…

Information Retrieval · Computer Science 2024-11-27 Jing Du , Zesheng Ye , Bin Guo , Zhiwen Yu , Jia Wu , Jian Yang , Michael Sheng , Lina Yao

Sequential recommendation is a popular paradigm in modern recommender systems. In particular, one challenging problem in this space is cross-domain sequential recommendation (CDSR), which aims to predict future behaviors given user…

Information Retrieval · Computer Science 2025-05-29 Clark Mingxuan Ju , Leonardo Neves , Bhuvesh Kumar , Liam Collins , Tong Zhao , Yuwei Qiu , Qing Dou , Sohail Nizam , Sen Yang , Neil Shah

Cross-domain recommendation (CDR) methods predominantly leverage overlapping users to transfer knowledge from a source domain to a target domain. However, through empirical studies, we uncover a critical bias inherent in these approaches:…

Information Retrieval · Computer Science 2025-07-24 Weixin Chen , Yuhan Zhao , Li Chen , Weike Pan

Cross-domain sequential recommendation (CDSR) aims to address the data sparsity problems that exist in traditional sequential recommendation (SR) systems. The existing approaches aim to design a specific cross-domain unit that can transfer…

Information Retrieval · Computer Science 2024-06-06 Wujiang Xu , Xuying Ning , Wenfang Lin , Mingming Ha , Qiongxu Ma , Qianqiao Liang , Xuewen Tao , Linxun Chen , Bing Han , Minnan Luo

Reinforcement Learning (RL) has shown significant promise in automated portfolio management; however, effectively balancing risk and return remains a central challenge, as many models fail to adapt to dynamically changing market conditions.…

Machine Learning · Computer Science 2025-12-04 Jiayi Chen , Jing Li , Guiling Wang

Cross-domain recommendation (CDR) has been attracting increasing attention of researchers for its ability to alleviate the data sparsity problem in recommender systems. However, the existing single-target or dual-target CDR methods often…

Information Retrieval · Computer Science 2022-01-19 Xiaoyun Zhao , Ning Yang , Philip S. Yu