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The success of most existing cross-modal retrieval methods heavily relies on the assumption that the given queries follow the same distribution of the source domain. However, such an assumption is easily violated in real-world scenarios due…

Machine Learning · Computer Science 2024-10-22 Haobin Li , Peng Hu , Qianjun Zhang , Xi Peng , Xiting Liu , Mouxing Yang

Conversational Recommender Systems (CRSs) have attracted growing attention for their ability to deliver personalized recommendations through natural language interactions. To more accurately infer user preferences from multi-turn…

Information Retrieval · Computer Science 2026-01-21 Wei Yuan , Shutong Qiao , Tong Chen , Quoc Viet Hung Nguyen , Zi Huang , Hongzhi Yin

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

Click-through rate (CTR) and post-click conversion rate (CVR) predictions are two fundamental modules in industrial ranking systems such as recommender systems, advertising, and search engines. Since CVR involves much fewer samples than CTR…

Information Retrieval · Computer Science 2023-02-17 Xuanji Xiao , Huabin Chen , Yuzhen Liu , Xing Yao , Pei Liu , Chaosheng Fan , Nian Ji , Xirong Jiang

Multi-task learning (MTL) has been widely used in recommender systems, wherein predicting each type of user feedback on items (e.g, click, purchase) are treated as individual tasks and jointly trained with a unified model. Our key…

Information Retrieval · Computer Science 2022-03-29 Chenxiao Yang , Junwei Pan , Xiaofeng Gao , Tingyu Jiang , Dapeng Liu , Guihai Chen

Click-through rates prediction is critical in modern advertising systems, where ranking relevance and user engagement directly impact platform efficiency and business value. In this project, we explore how to model CTR more effectively…

Machine Learning · Computer Science 2025-12-01 Hongyu Yang , Chunxi Wen , Jiyin Zhang , Nanfei Shen , Shijiao Zhang , Xiyan Han

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

Deploying models on target domain data subject to distribution shift requires adaptation. Test-time training (TTT) emerges as a solution to this adaptation under a realistic scenario where access to full source domain data is not available,…

Machine Learning · Computer Science 2023-03-21 Yongyi Su , Xun Xu , Tianrui Li , Kui Jia

In this paper we present a new approach to content-based transfer learning for solving the data sparsity problem in cases when the users' preferences in the target domain are either scarce or unavailable, but the necessary information on…

Machine Learning · Computer Science 2013-05-16 Naseem Biadsy , Lior Rokach , Armin Shmilovici

Finding the next venue to be visited by a user in a specific city is an interesting, but challenging, problem. Different techniques have been proposed, combining collaborative, content, social, and geographical signals; however it is not…

Information Retrieval · Computer Science 2018-09-27 Pablo Sánchez , Alejandro Bellogín

Long-standing data sparsity and cold-start constitute thorny and perplexing problems for the recommendation systems. Cross-domain recommendation as a domain adaptation framework has been utilized to efficiently address these challenging…

Information Retrieval · Computer Science 2024-10-28 Alexandros Gkillas , Dimitrios Kosmopoulos

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

Detection transformers like DETR have recently shown promising performance on many object detection tasks, but the generalization ability of those methods is still quite challenging for cross-domain adaptation scenarios. To address the…

Computer Vision and Pattern Recognition · Computer Science 2022-06-02 Jinhong Deng , Xiaoyue Zhang , Wen Li , Lixin Duan

Click-Through Rate (CTR) prediction, which aims to estimate the probability that a user will click an item, is an essential component of online advertising. Existing methods mainly attempt to mine user interests from users' historical…

Information Retrieval · Computer Science 2022-07-25 Erxue Min , Yu Rong , Tingyang Xu , Yatao Bian , Peilin Zhao , Junzhou Huang , Da Luo , Kangyi Lin , Sophia Ananiadou

Click-Through Rate (CTR) prediction, a core task in recommendation systems, aims to estimate the probability of users clicking on items. Existing models predominantly follow a discriminative paradigm, which relies heavily on explicit…

Information Retrieval · Computer Science 2025-12-17 Mingjia Yin , Junwei Pan , Hao Wang , Ximei Wang , Shangyu Zhang , Jie Jiang , Defu Lian , Enhong Chen

Recent advances in unsupervised domain adaptation have significantly improved the recognition accuracy of CNNs by alleviating the domain shift between (labeled) source and (unlabeled) target data distributions. While the problem of…

Computer Vision and Pattern Recognition · Computer Science 2022-05-13 Le Thanh Nguyen-Meidine , Madhu Kiran , Marco Pedersoli , Jose Dolz , Louis-Antoine Blais-Morin , Eric Granger

Click-through rate (CTR) prediction plays an important role in online advertising and recommendation systems, which aims at estimating the probability of a user clicking on a specific item. Feature interaction modeling and user interest…

Information Retrieval · Computer Science 2022-06-02 Zuowu Zheng , Changwang Zhang , Xiaofeng Gao , Guihai Chen

Click-through rate (CTR) prediction is one of the core tasks in recommender systems. User behavior sequences, as one of the most effective features, can accurately reflect user preferences and significantly improve prediction accuracy.…

Information Retrieval · Computer Science 2026-04-28 Xiaolong Chen , Haoyi Zhao , Xu Huang , Defu Lian

Multi-Domain Recommendation (MDR) has gained significant attention in recent years, which leverages data from multiple domains to enhance their performance concurrently.However, current MDR models are confronted with two limitations.…

Information Retrieval · Computer Science 2025-10-14 Xiaopeng Li , Fan Yan , Xiangyu Zhao , Yichao Wang , Bo Chen , Huifeng Guo , Ruiming Tang

Existing techniques to adapt semantic segmentation networks across the source and target domains within deep convolutional neural networks (CNNs) deal with all the samples from the two domains in a global or category-aware manner. They do…

Computer Vision and Pattern Recognition · Computer Science 2020-12-18 Minsu Kim , Sunghun Joung , Seungryong Kim , JungIn Park , Ig-Jae Kim , Kwanghoon Sohn