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CTR (Click-Through Rate) prediction, crucial for recommender systems and online advertising, etc., has been confirmed to benefit from modeling long-term user behaviors. Nonetheless, the vast number of behaviors and complexity of noise…

Information Retrieval · Computer Science 2025-09-22 Weijiang Lai , Beihong Jin , Yapeng Zhang , Yiyuan Zheng , Rui Zhao , Jian Dong , Jun Lei , Xingxing Wang

Recommender Systems (RS) aim to provide personalized suggestions of items for users against consumer over-choice. Although extensive research has been conducted to address different aspects and challenges of RS, there still exists a gap…

Information Retrieval · Computer Science 2023-03-07 Peiyan Zhang , Sunghun Kim

In this era of information explosion, a personalized recommendation system is convenient for users to get information they are interested in. To deal with billions of users and items, large-scale online recommendation services usually…

Information Retrieval · Computer Science 2025-09-04 Xu Yuan , Chen Xu , Qiwei Chen , Chao Li , Junfeng Ge , Wenwu Ou

Modern large-scale recommendation systems rely heavily on user interaction history sequences to enhance the model performance. The advent of large language models and sequential modeling techniques, particularly transformer-like…

Information Retrieval · Computer Science 2026-03-27 Zhimin Chen , Chenyu Zhao , Ka Chun Mo , Yunjiang Jiang , Jane H. Lee , Khushhall Chandra Mahajan , Ning Jiang , Kai Ren , Jinhui Li , Wen-Yun Yang

Traditional recommendation systems tend to trap users in strong feedback loops by excessively pushing content aligned with their historical preferences, thereby limiting exploration opportunities and causing content fatigue. Although large…

Information Retrieval · Computer Science 2026-03-05 Hongxiang Lin , Hao Guo , Zeshun Li , Erpeng Xue , Yongqian He , Zhaoyu Hu , Lei Wang , Sheng Chen , Long Zeng

Although deep neural networks have made remarkable achievements in the field of automatic modulation recognition (AMR), these models often require a large amount of labeled data for training. However, in many practical scenarios, the…

Machine Learning · Computer Science 2025-07-17 Yao Lu , Hongyu Gao , Zhuangzhi Chen , Dongwei Xu , Yun Lin , Qi Xuan , Guan Gui

Content-delivery applications can achieve scalability and reduce wide-area network traffic using geographically distributed caches. However, each deployed cache has an associated cost, and under time-varying request rates (e.g., a daily…

Networking and Internet Architecture · Computer Science 2021-12-30 Niklas Carlsson , Derek Eager

With the rapid growth of user historical behavior data, user interest modeling has become a prominent aspect in Click-Through Rate (CTR) prediction, focusing on learning user intent representations. However, this complexity poses…

Information Retrieval · Computer Science 2025-05-09 Xin Song , Xiaochen Li , Jinxin Hu , Hong Wen , Zulong Chen , Yu Zhang , Xiaoyi Zeng , Jing Zhang

User behavior modeling is a key technique for recommender systems. However, most methods focus on head users with large-scale interactions and hence suffer from data sparsity issues. Several solutions integrate side information such as…

Information Retrieval · Computer Science 2021-01-01 Lifang Deng , Jin Niu , Angulia Yang , Qidi Xu , Xiang Fu , Jiandong Zhang , Anxiang Zeng

Sequential recommendation is an extensively explored approach to capturing users' evolving preferences based on past interactions, aimed at predicting their next likely choice. Despite significant advancements in this domain, including…

Information Retrieval · Computer Science 2025-04-15 Kowei Shih , Yi Han , Li Tan

Despite dropout's ubiquity in machine learning, its effectiveness as a form of data augmentation remains under-explored. We address two key questions: (i) When is dropout effective as an augmentation strategy? (ii) Is dropout uniquely…

Machine Learning · Computer Science 2025-06-02 Rickard Brüel-Gabrielsson , Tongzhou Wang , Manel Baradad , Justin Solomon

Dynamic spectrum access (DSA) is regarded as an effective and efficient technology to share radio spectrum among different networks. As a secondary user (SU), a DSA device will face two critical problems: avoiding causing harmful…

Machine Learning · Computer Science 2018-10-30 Hao-Hsuan Chang , Hao Song , Yang Yi , Jianzhong Zhang , Haibo He , Lingjia Liu

Reciprocal recommender system (RRS), considering a two-way matching between two parties, has been widely applied in online platforms like online dating and recruitment. Existing RRS models mainly capture static user preferences, which have…

Information Retrieval · Computer Science 2023-06-27 Bowen Zheng , Yupeng Hou , Wayne Xin Zhao , Yang Song , Hengshu Zhu

Conversational recommendation systems (CRS) could acquire dynamic user preferences towards desired items through multi-round interactive dialogue. Previous CRS mainly focuses on the single conversation (subsession) that user quits after a…

Information Retrieval · Computer Science 2023-10-23 Yu Ji , Qi Shen , Shixuan Zhu , Hang Yu , Yiming Zhang , Chuan Cui , Zhihua Wei

Data stream mining, also known as stream learning, is a growing area which deals with learning from high-speed arriving data. Its relevance has surged recently due to its wide range of applicability, such as, critical infrastructure…

Machine Learning · Computer Science 2025-04-08 Kleanthis Malialis , Stylianos Filippou , Christos G. Panayiotou , Marios M. Polycarpou

Online community platforms require dynamic personalized retrieval and recommendation that can continuously adapt to evolving user interests and new documents. However, optimizing models to handle such changes in real-time remains a major…

Information Retrieval · Computer Science 2025-05-07 Youngjune Lee , Haeyu Jeong , Changgeon Lim , Jeong Choi , Hongjun Lim , Hangon Kim , Jiyoon Kwon , Saehun Kim

The main task of personalized recommendation is capturing users' interests based on their historical behaviors. Most of recent advances in recommender systems mainly focus on modeling users' preferences accurately using deep learning based…

Information Retrieval · Computer Science 2020-07-15 Shihao Li , Dekun Yang , Bufeng Zhang

The majority of existing recommender systems rely on user ratings, which are limited by the lack of user collaboration and the sparsity problem. To address these issues, this study proposes a behavior-based recommender system that leverages…

Information Retrieval · Computer Science 2024-03-28 Reza Barzegar Nozari , Mahdi Divsalar , Sepehr Akbarzadeh Abkenar , Mohammadreza Fadavi Amiri , Ali Divsalar

The need for diversification of recommendation lists manifests in a number of recommender systems use cases. However, an increase in diversity may undermine the utility of the recommendations, as relevant items in the list may be replaced…

Information Retrieval · Computer Science 2014-11-14 Azin Ashkan , Branislav Kveton , Shlomo Berkovsky , Zheng Wen

Recently, substantial research has been conducted on sequential recommendation, with the objective of forecasting the subsequent item by leveraging a user's historical sequence of interacted items. Prior studies employ both capsule networks…

Information Retrieval · Computer Science 2025-05-01 Zhikai Wang , Yanyan Shen