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The rapid proliferation of new users and items on the social web has aggravated the gray-sheep user/long-tail item challenge in recommender systems. Historically, cross-domain co-clustering methods have successfully leveraged shared users…

Information Retrieval · Computer Science 2020-05-22 Adit Krishnan , Mahashweta Das , Mangesh Bendre , Hao Yang , Hari Sundaram

Ensemble models achieve state-of-the-art performance on prediction tasks, but usually require aggregating a large number of weak learners. This can hinder deployment, interpretability, and downstream tasks such as robustness verification.…

Machine Learning · Computer Science 2026-05-08 Fabian Akkerman , Julien Ferry , Théo Guyard , Thibaut Vidal

Electroencephalography (EEG)-based emotion recognition suffers from severe performance degradation when models are transferred across heterogeneous datasets due to physiological variability, experimental paradigm differences, and device…

Machine Learning · Computer Science 2026-03-31 Guangli Li , Canbiao Wu , Na Tian , Li Zhang , Zhen Liang

Interpretable explanations for recommender systems and other machine learning models are crucial to gain user trust. Prior works that have focused on paths connecting users and items in a heterogeneous network have several limitations, such…

Machine Learning · Computer Science 2019-12-25 Azin Ghazimatin , Oana Balalau , Rishiraj Saha Roy , Gerhard Weikum

Supply Chain Platforms (SCPs) provide downstream industries with numerous raw materials. Compared with traditional e-commerce platforms, data in SCPs is more sparse due to limited user interests. To tackle the data sparsity problem, one can…

Information Retrieval · Computer Science 2022-09-05 Zhiwen Jing , Ziliang Zhao , Yang Feng , Xiaochen Ma , Nan Wu , Shengqiao Kang , Cheng Yang , Yujia Zhang , Hao Guo

Knowledge-based recommendation models effectively alleviate the data sparsity issue leveraging the side information in the knowledge graph, and have achieved considerable performance. Nevertheless, the knowledge graphs used in previous…

Information Retrieval · Computer Science 2024-03-28 Shenghao Yang , Weizhi Ma , Peijie Sun , Min Zhang , Qingyao Ai , Yiqun Liu , Mingchen Cai

Despite recent advances in machine learning and explainable AI, a gap remains in personalized preventive healthcare: predictions, interventions, and recommendations should be both understandable and verifiable for all stakeholders in the…

Unsupervised efficient domain adaptive retrieval aims to transfer knowledge from a labeled source domain to an unlabeled target domain, while maintaining low storage cost and high retrieval efficiency. However, existing methods typically…

Machine Learning · Computer Science 2025-05-21 Junyu Luo , Yusheng Zhao , Xiao Luo , Zhiping Xiao , Wei Ju , Li Shen , Dacheng Tao , Ming Zhang

Federated Learning has emerged as a leading paradigm for decentralized, privacy-preserving learning, particularly relevant in the era of interconnected edge devices equipped with sensors. However, the practical implementation of Federated…

Machine Learning · Computer Science 2025-07-15 Manuel Röder , Christoph Raab , Frank-Michael Schleif

Cross-domain recommendation has long been one of the major topics in recommender systems. Recently, various deep models have been proposed to transfer the learned knowledge across domains, but most of them focus on extracting abstract…

Machine Learning · Computer Science 2019-05-28 Feng Yuan , Lina Yao , Boualem Benatallah

Data sparsity and cold-start problems are persistent challenges in recommendation systems. Cross-domain recommendation (CDR) is a promising solution that utilizes knowledge from the source domain to improve the recommendation performance in…

Information Retrieval · Computer Science 2023-11-07 Yanyu Chen , Yao Yao , Wai Kin Victor Chan , Li Xiao , Kai Zhang , Liang Zhang , Yun Ye

Deploying reinforcement learning (RL) in robotics, industry, and health care is blocked by two obstacles: the difficulty of specifying accurate rewards and the risk of unsafe, data-hungry exploration. We address this by proposing a…

Artificial Intelligence · Computer Science 2025-10-14 Maël Macuglia , Paul Friedrich , Giorgia Ramponi

With the widespread adoption of information systems, recommender systems are widely used for better user experience. Collaborative filtering is a popular approach in implementing recommender systems. Yet, collaborative filtering methods are…

Information Retrieval · Computer Science 2019-08-20 Sapumal Ahangama , Danny Chiang-Choon Poo

Cold-start problems are enormous challenges in practical recommender systems. One promising solution for this problem is cross-domain recommendation (CDR) which leverages rich information from an auxiliary (source) domain to improve the…

Information Retrieval · Computer Science 2021-05-12 Yongchun Zhu , Kaikai Ge , Fuzhen Zhuang , Ruobing Xie , Dongbo Xi , Xu Zhang , Leyu Lin , Qing He

Automated Essay Scoring (AES) faces significant challenges in cross-prompt settings, where models must generalize to unseen writing prompts. To address this limitation, we propose MAPLE, a meta-learning framework that leverages prototypical…

Computation and Language · Computer Science 2026-04-21 Salam Albatarni , May Bashendy , Sohaila Eltanbouly , Tamer Elsayed

Transferring knowledges learned from multiple source domains to target domain is a more practical and challenging task than conventional single-source domain adaptation. Furthermore, the increase of modalities brings more difficulty in…

Computer Vision and Pattern Recognition · Computer Science 2020-07-29 Hang Wang , Minghao Xu , Bingbing Ni , Wenjun Zhang

Cross-domain NER is a challenging task to address the low-resource problem in practical scenarios. Previous typical solutions mainly obtain a NER model by pre-trained language models (PLMs) with data from a rich-resource domain and adapt it…

Computation and Language · Computer Science 2023-09-19 Xiang Chen , Lei Li , Shuofei Qiao , Ningyu Zhang , Chuanqi Tan , Yong Jiang , Fei Huang , Huajun Chen

Recommendation model performance is intrinsically tied to the quality, volume, and relevance of their training data. To address common challenges like data sparsity and cold start, recent researchs have leveraged data from multiple…

Artificial Intelligence · Computer Science 2026-04-01 Jiaqing Zhang , Mingjia Yin , Hao Wang , Yuxin Tian , Yuyang Ye , Yawen Li , Wei Guo , Yong Liu , Enhong Chen

With the availability of massive general-domain dialogue data, pre-trained dialogue generation appears to be super appealing to transfer knowledge from the general domain to downstream applications. In most existing work, such transferable…

Computation and Language · Computer Science 2022-10-25 Xueliang Zhao , Lemao Liu , Tingchen Fu , Shuming Shi , Dongyan Zhao , Rui Yan

Recent advances in generic large models, such as GPT and DeepSeek, have motivated the introduction of universality to graph pre-training, aiming to learn rich and generalizable knowledge across diverse domains using graph representations to…

Machine Learning · Computer Science 2026-02-27 Lianze Shan , Jitao Zhao , Dongxiao He , Siqi Liu , Jiaxu Cui , Weixiong Zhang