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Cross-domain offline reinforcement learning aims to adapt a policy from a source domain to a target domain using only pre-collected datasets, where environment dynamics may differ. A key challenge is to leverage source data while reducing…

Machine Learning · Computer Science 2026-05-14 Minung Kim , Jeongmo Kim , Gwanwoo Choi , Seungyul Han

Cross domain recommender systems have been increasingly valuable for helping consumers identify useful items in different applications. However, existing cross-domain models typically require large number of overlap users, which can be…

Information Retrieval · Computer Science 2021-04-21 Pan Li , Alexander Tuzhilin

Deep learning has been applied to achieve significant progress in emotion recognition. Despite such substantial progress, existing approaches are still hindered by insufficient training data, and the resulting models do not generalize well…

Computer Vision and Pattern Recognition · Computer Science 2020-03-26 Dung Nguyen , Sridha Sridharan , Duc Thanh Nguyen , Simon Denman , Son N. Tran , Rui Zeng , Clinton Fookes

Prior access to domain knowledge could significantly improve the performance of a reinforcement learning agent. In particular, it could help agents avoid potentially catastrophic exploratory actions, which would otherwise have to be…

Artificial Intelligence · Computer Science 2020-09-15 Thommen George Karimpanal , Santu Rana , Sunil Gupta , Truyen Tran , Svetha Venkatesh

Recommender systems have long been built upon the modeling of interactions between users and items, while recent studies have sought to broaden this paradigm by generalizing to new users and items, incorporating diverse information sources,…

Information Retrieval · Computer Science 2025-10-28 Chanyoung Chung , Kyeongryul Lee , Sunbin Park , Joyce Jiyoung Whang

Domain adaptation (DA) aims to transfer knowledge learned from a labeled source domain to an unlabeled or a less labeled but related target domain. Ideally, the source and target distributions should be aligned to each other equally to…

Computer Vision and Pattern Recognition · Computer Science 2022-08-15 Jian Hu , Haowen Zhong , Junchi Yan , Shaogang Gong , Guile Wu , Fei Yang

In this paper, we aim to adapt a model at test-time using a few unlabeled data to address distribution shifts. To tackle the challenges of extracting domain knowledge from a limited amount of data, it is crucial to utilize correlated…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Zhixiang Chi , Li Gu , Tao Zhong , Huan Liu , Yuanhao Yu , Konstantinos N Plataniotis , Yang Wang

We study a new highly-practical problem setting that enables resource-constrained edge devices to adapt a pre-trained model to their local data distributions. Recognizing that device's data are likely to come from multiple latent domains…

Machine Learning · Computer Science 2024-02-02 Ondrej Bohdal , Da Li , Shell Xu Hu , Timothy Hospedales

Transfer learning is an effective technique to improve a target recommender system with the knowledge from a source domain. Existing research focuses on the recommendation performance of the target domain while ignores the privacy leakage…

Artificial Intelligence · Computer Science 2021-01-14 Guangneng Hu , Qiang Yang

Recommender systems frequently encounter data sparsity issues, particularly when addressing cold-start scenarios involving new users or items. Multi-source cross-domain recommendation (CDR) addresses these challenges by transferring…

Information Retrieval · Computer Science 2025-10-07 Lili Xie , Yi Zhang , Ruihong Qiu , Jiajun Liu , Sen Wang

Nowadays, many recommender systems encompass various domains to cater to users' diverse needs, leading to user behaviors transitioning across different domains. In fact, user behaviors across different domains reveal changes in preference…

Information Retrieval · Computer Science 2025-05-08 Changshuo Zhang , Teng Shi , Xiao Zhang , Qi Liu , Ruobing Xie , Jun Xu , Ji-Rong Wen

Prompt learning has attracted increasing attention in the graph domain as a means to bridge the gap between pretext and downstream tasks. Existing studies on heterogeneous graph prompting typically use feature prompts to modify node…

Machine Learning · Computer Science 2025-02-14 Feiyang Wang , Zhongbao Zhang , Junda Ye , Li Sun , Jianzhong Qi

Cross-domain recommendation (CDR), aiming to extract and transfer knowledge across domains, has attracted wide attention for its efficacy in addressing data sparsity and cold-start problems. Despite significant advances in representation…

Information Retrieval · Computer Science 2024-04-02 Luankang Zhang , Hao Wang , Suojuan Zhang , Mingjia Yin , Yongqiang Han , Jiaqing Zhang , Defu Lian , Enhong Chen

Real-world recommendation systems commonly offer diverse content scenarios for users to interact with. Considering the enormous number of users in industrial platforms, it is infeasible to utilize a single unified recommendation model to…

Information Retrieval · Computer Science 2024-12-10 Chonggang Song , Chunxu Shen , Hao Gu , Yaoming Wu , Lingling Yi , Jie Wen , Chuan Chen

Cross-domain recommendation has attracted substantial interest in industrial apps such as Meituan, which serves multiple business domains via knowledge transfer and meets the diverse interests of users. However, existing methods typically…

Information Retrieval · Computer Science 2024-07-30 Lei Huang , Weitao Li , Chenrui Zhang , Jinpeng Wang , Xianchun Yi , Sheng Chen

To leverage machine learning in any decision-making process, one must convert the given knowledge (for example, natural language, unstructured text) into representation vectors that can be understood and processed by machine learning model…

Machine Learning · Computer Science 2023-07-11 Shibo Yao

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…

Information Retrieval · Computer Science 2024-03-28 Yejin Kim , Scott Rome , Kevin Foley , Mayur Nankani , Rimon Melamed , Javier Morales , Abhay Yadav , Maria Peifer , Sardar Hamidian , H. Howie Huang

Domain adaptation in reinforcement learning (RL) mainly deals with the changes of observation when transferring the policy to a new environment. Many traditional approaches of domain adaptation in RL manage to learn a mapping function…

Machine Learning · Computer Science 2023-06-14 Qi Yi , Rui Zhang , Shaohui Peng , Jiaming Guo , Yunkai Gao , Kaizhao Yuan , Ruizhi Chen , Siming Lan , Xing Hu , Zidong Du , Xishan Zhang , Qi Guo , Yunji Chen

Knowledge graph completion (KGC) is one of the effective methods to identify new facts in knowledge graph. Except for a few methods based on graph network, most of KGC methods trend to be trained based on independent triples, while are…

Artificial Intelligence · Computer Science 2023-03-20 Kuan Xu , Kuo Yang , Hanyang Dong , Xinyan Wang , Jian Yu , Xuezhong Zhou

Safe landing is essential in robotics applications, from industrial settings to space exploration. As artificial intelligence advances, we have developed PEACE (Prompt Engineering Automation for CLIPSeg Enhancement), a system that…

Robotics · Computer Science 2025-07-01 Haechan Mark Bong , Rongge Zhang , Antoine Robillard , Giovanni Beltrame