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Cross-Domain Sequential Recommendation (CDSR) aims to predict future interactions based on user's historical sequential interactions from multiple domains. Generally, a key challenge of CDSR is how to mine precise cross-domain user…

Information Retrieval · Computer Science 2023-04-11 Jiangxia Cao , Xin Cong , Jiawei Sheng , Tingwen Liu , Bin Wang

ID-based Recommender Systems (RecSys), where each item is assigned a unique identifier and subsequently converted into an embedding vector, have dominated the designing of RecSys. Though prevalent, such ID-based paradigm is not suitable for…

Information Retrieval · Computer Science 2023-12-19 Youhua Li , Hanwen Du , Yongxin Ni , Pengpeng Zhao , Qi Guo , Fajie Yuan , Xiaofang Zhou

This paper investigates the one-epoch overfitting phenomenon in Click-Through Rate (CTR) models, where performance notably declines at the start of the second epoch. Despite extensive research, the efficacy of multi-epoch training over the…

Machine Learning · Computer Science 2024-07-03 Zhongxiang Fan , Zhaocheng Liu , Jian Liang , Dongying Kong , Han Li , Peng Jiang , Shuang Li , Kun Gai

Deep learning-based recommender systems may lead to over-fitting when lacking training interaction data. This over-fitting significantly degrades recommendation performances. To address this data sparsity problem, cross-domain recommender…

Information Retrieval · Computer Science 2022-11-08 Zhi Li , Daichi Amagata , Yihong Zhang , Takahiro Hara , Shuichiro Haruta , Kei Yonekawa , Mori Kurokawa

Meta-Learning is a subarea of Machine Learning that aims to take advantage of prior knowledge to learn faster and with fewer data [1]. There are different scenarios where meta-learning can be applied, and one of the most common is algorithm…

Machine Learning · Computer Science 2019-10-17 Gean Trindade Pereira , Moisés dos Santos , Edesio Alcobaça , Rafael Mantovani , André Carvalho

Most pedestrian trajectory prediction methods rely on a huge amount of trajectories annotation, which is time-consuming and expensive. Moreover, a well-trained model may not effectively generalize to a new scenario captured by another…

Computer Vision and Pattern Recognition · Computer Science 2022-08-17 Pingxuan Huang , Zhenhua Cui , Jing Li , Shenghua Gao , bo Hu , Yanyan Fang

Cross-domain recommendation (CDR) aims to alleviate the data sparsity by transferring knowledge across domains. Disentangled representation learning provides an effective solution to model complex user preferences by separating intra-domain…

Information Retrieval · Computer Science 2025-07-24 Yuhan Wang , Qing Xie , Zhifeng Bao , Mengzi Tang , Lin Li , Yongjian Liu

Many sequential recommender systems suffer from the cold start problem, where items with few or no interactions cannot be effectively used by the model due to the absence of a trained embedding. Content-based approaches, which leverage item…

Information Retrieval · Computer Science 2025-07-28 Anton Pembek , Artem Fatkulin , Anton Klenitskiy , Alexey Vasilev

Modern DNN-based recommendation systems rely on training-derived embeddings of sparse features. Input sparsity makes obtaining high-quality embeddings for rarely-occurring categories harder as their representations are updated infrequently.…

Machine Learning · Computer Science 2023-09-29 Zihao Deng , Benjamin Ghaemmaghami , Ashish Kumar Singh , Benjamin Cho , Leo Orshansky , Mattan Erez , Michael Orshansky

In many practical transfer learning scenarios, the feature distribution is different across the source and target domains (i.e. non-i.i.d.). Maximum mean discrepancy (MMD), as a domain discrepancy metric, has achieved promising performance…

Computer Vision and Pattern Recognition · Computer Science 2019-03-26 Lei Zhang , Shanshan Wang , Guang-Bin Huang , Wangmeng Zuo , Jian Yang , David Zhang

In many practical visual recognition scenarios, feature distribution in the source domain is generally different from that of the target domain, which results in the emergence of general cross-domain visual recognition problems. To address…

Computer Vision and Pattern Recognition · Computer Science 2019-12-25 Shanshan Wang , Lei Zhang , JingRu Fu

User cold-start recommendation is a long-standing challenge for recommender systems due to the fact that only a few interactions of cold-start users can be exploited. Recent studies seek to address this challenge from the perspective of…

Information Retrieval · Computer Science 2021-03-11 Xixun Lin , Jia Wu , Chuan Zhou , Shirui Pan , Yanan Cao , Bin Wang

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

Cross-domain reinforcement learning (CDRL) is meant to improve the data efficiency of RL by leveraging the data samples collected from a source domain to facilitate the learning in a similar target domain. Despite its potential,…

Machine Learning · Computer Science 2026-03-13 Ming-Hong Chen , Kuan-Chen Pan , You-De Huang , Xi Liu , Ping-Chun Hsieh

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

Embedding & MLP has become a paradigm for modern large-scale recommendation system. However, this paradigm suffers from the cold-start problem which will seriously compromise the ecological health of recommendation systems. This paper…

Information Retrieval · Computer Science 2022-05-30 Xu Zhao , Yi Ren , Ying Du , Shenzheng Zhang , Nian Wang

Cross-Domain Collaborative Filtering (CDCF) provides a way to alleviate data sparsity and cold-start problems present in recommendation systems by exploiting the knowledge from related domains. Existing CDCF models are either based on…

Information Retrieval · Computer Science 2019-07-22 Vijaikumar M , Shirish Shevade , M N Murty

This paper investigates Cross-Domain Sequential Recommendation (CDSR), a promising method that uses information from multiple domains (more than three) to generate accurate and diverse recommendations, and takes into account the sequential…

Artificial Intelligence · Computer Science 2023-11-23 Chung Park , Taesan Kim , Taekyoon Choi , Junui Hong , Yelim Yu , Mincheol Cho , Kyunam Lee , Sungil Ryu , Hyungjun Yoon , Minsung Choi , Jaegul Choo

Visible-infrared cross-modality person re-identification is a challenging ReID task, which aims to retrieve and match the same identity's images between the heterogeneous visible and infrared modalities. Thus, the core of this task is to…

Computer Vision and Pattern Recognition · Computer Science 2023-05-24 Tengfei Liang , Yi Jin , Yajun Gao , Wu Liu , Songhe Feng , Tao Wang , Yidong Li

With the increasing availability of videos, how to edit them and present the most interesting parts to users, i.e., video highlight, has become an urgent need with many broad applications. As users'visual preferences are subjective and vary…

Information Retrieval · Computer Science 2020-05-26 Le Wu , Yonghui Yang , Lei Chen , Defu Lian , Richang Hong , Meng Wang