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Sequential recommendation systems model dynamic preferences of users based on their historical interactions with platforms. Despite recent progress, modeling short-term and long-term behavior of users in such systems is nontrivial and…

Information Retrieval · Computer Science 2021-07-07 Mehrnaz Amjadi , Seyed Danial Mohseni Taheri , Theja Tulabandhula

Transformer based models are increasingly being used in various domains including recommender systems (RS). Pretrained transformer models such as BERT have shown good performance at language modelling. With the greater ability to model…

Information Retrieval · Computer Science 2025-01-03 Uzma Mushtaque

Search engines operate under a strict time constraint as a fast response is paramount to user satisfaction. Thus, neural re-ranking models have a limited time-budget to re-rank documents. Given the same amount of time, a faster re-ranking…

Information Retrieval · Computer Science 2020-02-06 Sebastian Hofstätter , Markus Zlabinger , Allan Hanbury

Transformer-based sequential recommendation (TSR) models have shown superior performance in recommendation systems, where the quality of item representations plays a crucial role. Classical representation methods integrate item features…

Information Retrieval · Computer Science 2025-04-22 Hao Deng , Haibo Xing , Kanefumi Matsuyama , Yulei Huang , Jinxin Hu , Hong Wen , Jia Xu , Zulong Chen , Yu Zhang , Xiaoyi Zeng , Jing Zhang

Deep neural networks have emerged as a powerful technique for learning representations from user-item interaction data in collaborative filtering (CF) for recommender systems. However, many existing methods heavily rely on unique user and…

Information Retrieval · Computer Science 2025-10-21 Xubin Ren , Chao Huang

Transformer models have achieved remarkable success in sequential recommender systems (SRSs). However, computing the attention matrix in traditional dot-product attention mechanisms results in a quadratic complexity with sequence lengths,…

Information Retrieval · Computer Science 2024-11-05 Langming Liu , Xiangyu Zhao , Chi Zhang , Jingtong Gao , Wanyu Wang , Wenqi Fan , Yiqi Wang , Ming He , Zitao Liu , Qing Li

Spiking Neural Networks (SNNs) offer a promising direction for energy-efficient and brain-inspired computing, yet their vulnerability to adversarial perturbations remains poorly understood. In this work, we revisit the adversarial…

Machine Learning · Computer Science 2025-08-18 Jihang Wang , Dongcheng Zhao , Ruolin Chen , Qian Zhang , Yi Zeng

Sequential recommendation is a task to capture hidden user preferences from historical user item interaction data and recommend next items for the user. Significant progress has been made in this domain by leveraging classification based…

Information Retrieval · Computer Science 2024-08-30 Panfeng Cao , Pietro Lio

Sequential recommendation systems aim to provide personalized recommendations by analyzing dynamic preferences and dependencies within user behavior sequences. Recently, Transformer models can effectively capture user preferences. However,…

Information Retrieval · Computer Science 2024-07-30 Shun Zhang , Runsen Zhang , Zhirong Yang

In this paper, we propose a listwise approach for constructing user-specific rankings in recommendation systems in a collaborative fashion. We contrast the listwise approach to previous pointwise and pairwise approaches, which are based on…

Machine Learning · Statistics 2019-02-08 Liwei Wu , Cho-Jui Hsieh , James Sharpnack

Next Set Recommendation (NSRec), encompassing related tasks such as next basket recommendation and temporal sets prediction, stands as a trending research topic. Although numerous attempts have been made on this topic, there are certain…

Information Retrieval · Computer Science 2024-10-31 Yuli Liu , Min Liu , Christian Walder , Lexing Xie

At the age of big data, recommender systems have shown remarkable success as a key means of information filtering in our daily life. Recent years have witnessed the technical development of recommender systems, from perception learning to…

Information Retrieval · Computer Science 2022-08-30 Zhijian Luo , Zihan Huang , Jiahui Tang , Yueen Hou , Yanzeng Gao

Sequential recommendation (SR) models often capture user preferences based on the historically interacted item IDs, which usually obtain sub-optimal performance when the interaction history is limited. Content-based sequential…

Information Retrieval · Computer Science 2025-10-20 Donglin Zhou , Weike Pan , Zhong Ming

Interactive conversational recommender systems have gained significant attention for their ability to capture user preferences through natural language interactions. However, existing approaches face substantial challenges in handling…

Artificial Intelligence · Computer Science 2025-10-03 Bo Ma , Hang Li , ZeHua Hu , XiaoFan Gui , LuYao Liu , Simon Lau

Calibrated recommendation, which aims to maintain personalized proportions of categories within recommendations, is crucial in practical scenarios since it enhances user satisfaction by reflecting diverse interests. However, achieving…

Information Retrieval · Computer Science 2024-08-06 Hyunsik Jeon , Se-eun Yoon , Julian McAuley

We present our solution to the job recommendation task for RecSys Challenge 2016. The main contribution of our work is to combine temporal learning with sequence modeling to capture complex user-item activity patterns to improve job…

Machine Learning · Computer Science 2016-08-16 Kuan Liu , Xing Shi , Anoop Kumar , Linhong Zhu , Prem Natarajan

Transformer structures have been widely used in sequential recommender systems (SRS). However, as user interaction histories increase, computational time and memory requirements also grow. This is mainly caused by the standard attention…

Information Retrieval · Computer Science 2026-05-25 Mengyang Ma , Xiaopeng Li , Wanyu Wang , Zhaocheng Du , Jingtong Gao , Pengyue Jia , Yuyang Ye , Yiqi Wang , Yunpeng Weng , Weihong Luo , Xiao Han , Xiangyu Zhao

The recent development of online recommender systems has a focus on collaborative ranking from implicit feedback, such as user clicks and purchases. Different from explicit ratings, which reflect graded user preferences, the implicit…

Information Retrieval · Computer Science 2020-02-25 Chao Wang , Hengshu Zhu , Chen Zhu , Chuan Qin , Hui Xiong

Sequential recommendation methods are increasingly important in cutting-edge recommender systems. Through leveraging historical records, the systems can capture user interests and perform recommendations accordingly. State-of-the-art…

Information Retrieval · Computer Science 2023-08-10 Chong Liu , Xiaoyang Liu , Rongqin Zheng , Lixin Zhang , Xiaobo Liang , Juntao Li , Lijun Wu , Min Zhang , Leyu Lin

Modern online service providers such as online shopping platforms often provide both search and recommendation (S&R) services to meet different user needs. Rarely has there been any effective means of incorporating user behavior data from…

Information Retrieval · Computer Science 2023-05-19 Zihua Si , Zhongxiang Sun , Xiao Zhang , Jun Xu , Xiaoxue Zang , Yang Song , Kun Gai , Ji-Rong Wen