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The ubiquity of implicit feedback makes it indispensable for building recommender systems. However, it does not actually reflect the actual satisfaction of users. For example, in E-commerce, a large portion of clicks do not translate to…

Information Retrieval · Computer Science 2021-12-03 Wenjie Wang , Fuli Feng , Xiangnan He , Liqiang Nie , Tat-Seng Chua

Adaptive Mixed-Criticality (AMC) is a fixed-priority preemptive scheduling algorithm for mixed-criticality hard real-time systems. It dominates many other scheduling algorithms for mixed-criticality systems, but does so at the cost of…

Operating Systems · Computer Science 2024-11-04 Bruno Mendes , Pedro F. Souto , Pedro C. Diniz

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

As a study on the efficient usage of data, Multi-source Unsupervised Domain Adaptation transfers knowledge from multiple source domains with labeled data to an unlabeled target domain. However, the distribution discrepancy between different…

Computer Vision and Pattern Recognition · Computer Science 2022-10-07 Tong Xu , Lin Wang , Wu Ning , Chunyan Lyu , Kejun Wang , Chenhui Wang

Cross-Domain Recommendation (CDR) has been popularly studied to utilize different domain knowledge to solve the data sparsity and cold-start problem in recommender systems. In this paper, we focus on the Review-based Non-overlapped…

Information Retrieval · Computer Science 2022-02-11 Weiming Liu , Xiaolin Zheng , Mengling Hu , Chaochao Chen

Shared-account Cross-domain Sequential recommendation (SCSR) is the task of recommending the next item based on a sequence of recorded user behaviors, where multiple users share a single account, and their behaviours are available in…

Information Retrieval · Computer Science 2021-05-10 Lei Guo , Li Tang , Tong Chen , Lei Zhu , Quoc Viet Hung Nguyen , Hongzhi Yin

Loss function learning is a new meta-learning paradigm that aims to automate the essential task of designing a loss function for a machine learning model. Existing techniques for loss function learning have shown promising results, often…

Machine Learning · Computer Science 2025-10-14 Christian Raymond , Qi Chen , Bing Xue , Mengjie Zhang

As new products are emerging daily, recommendation systems are required to quickly adapt to possible new domains without needing extensive retraining. This work presents ``X-Cross'' -- a novel cross-domain sequential-recommendation model…

Information Retrieval · Computer Science 2025-04-30 Guy Hadad , Haggai Roitman , Yotam Eshel , Bracha Shapira , Lior Rokach

In modern recommender systems, sequential recommendation leverages chronological user behaviors to make effective next-item suggestions, which suffers from data sparsity issues, especially for new users. One promising line of work is the…

Information Retrieval · Computer Science 2023-11-15 Guanyu Lin , Chen Gao , Yu Zheng , Jianxin Chang , Yanan Niu , Yang Song , Kun Gai , Zhiheng Li , Depeng Jin , Yong Li , Meng Wang

In this paper, we make two contributions to unsupervised domain adaptation (UDA) using the convolutional neural network (CNN). First, our approach transfers knowledge in all the convolutional layers through attention alignment. Most…

Computer Vision and Pattern Recognition · Computer Science 2018-08-14 Guoliang Kang , Liang Zheng , Yan Yan , Yi Yang

Cross-Domain Recommendation (CDR) has been popularly studied to utilize different domain knowledge to solve the cold-start problem in recommender systems. Most of the existing CDR models assume that both the source and target domains share…

Information Retrieval · Computer Science 2022-05-30 Weiming Liu , Xiaolin Zheng , Mengling Hu , Chaochao Chen

The performance of a classifier trained on data coming from a specific domain typically degrades when applied to a related but different one. While annotating many samples from the new domain would address this issue, it is often too…

Computer Vision and Pattern Recognition · Computer Science 2018-03-13 Artem Rozantsev , Mathieu Salzmann , Pascal Fua

Domain generalization involves learning a classifier from a heterogeneous collection of training sources such that it generalizes to data drawn from similar unknown target domains, with applications in large-scale learning and personalized…

Machine Learning · Computer Science 2021-12-24 Xavier Thomas , Dhruv Mahajan , Alex Pentland , Abhimanyu Dubey

Multi-source unsupervised domain adaptation (MUDA) aims to transfer knowledge from related source domains to an unlabeled target domain. While recent MUDA methods have shown promising results, most focus on aligning the overall feature…

Machine Learning · Computer Science 2023-07-27 Long Liu , Bo Zhou , Zhipeng Zhao , Zening Liu

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

Stochastic gradient algorithms are the main focus of large-scale optimization problems and led to important successes in the recent advancement of the deep learning algorithms. The convergence of SGD depends on the careful choice of…

Machine Learning · Computer Science 2017-03-03 Caglar Gulcehre , Jose Sotelo , Marcin Moczulski , Yoshua Bengio

Click-through rate (CTR) prediction is a fundamental technique in recommendation and advertising systems. Recent studies have proved that learning a unified model to serve multiple domains is effective to improve the overall performance.…

Information Retrieval · Computer Science 2022-07-04 Xuanhua Yang , Xiaoyu Peng , Penghui Wei , Shaoguo Liu , Liang Wang , Bo Zheng

Domain adaptation aims to generalise a high-performance learner on target domain (non-labelled data) by leveraging the knowledge from source domain (rich labelled data) which comes from a different but related distribution. Assuming the…

Computer Vision and Pattern Recognition · Computer Science 2019-10-18 Jie Su

Building robust online content recommendation systems requires learning complex interactions between user preferences and content features. The field has evolved rapidly in recent years from traditional multi-arm bandit and collaborative…

Information Retrieval · Computer Science 2018-05-08 Yoel Zeldes , Stavros Theodorakis , Efrat Solodnik , Aviv Rotman , Gil Chamiel , Dan Friedman

This paper proposes a new unsupervised domain adaptation approach called Collaborative and Adversarial Network (CAN), which uses the domain-collaborative and domain-adversarial learning strategy for training the neural network. The…

Computer Vision and Pattern Recognition · Computer Science 2025-06-25 Weichen Zhang , Dong Xu , Wanli Ouyang , Wen Li