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With the advancement of machine learning and artificial intelligence technologies, recommender systems have been increasingly used across a vast variety of platforms to efficiently and effectively match users with items. As application…

Information Retrieval · Computer Science 2026-01-28 Xuan Bi , Yaqiong Wang , Gediminas Adomavicius , Shawn Curley

Sequential recommendation plays an increasingly important role in many e-commerce services such as display advertisement and online shopping. With the rapid development of these services in the last two decades, users have accumulated a…

Information Retrieval · Computer Science 2021-06-01 Yongji Wu , Lu Yin , Defu Lian , Mingyang Yin , Neil Zhenqiang Gong , Jingren Zhou , Hongxia Yang

Deep recommender systems (DRS) are intensively applied in modern web services. To deal with the massive web contents, DRS employs a two-stage workflow: retrieval and ranking, to generate its recommendation results. The retriever aims to…

Information Retrieval · Computer Science 2023-03-30 Xu Huang , Defu Lian , Jin Chen , Zheng Liu , Xing Xie , Enhong Chen

Multi-behavior recommendation aims to predict user conversions by modeling various interaction types that carry distinct intent signals. Recently, generative sequence modeling methods have emerged as an important paradigm for multi-behavior…

Information Retrieval · Computer Science 2026-04-28 Wenxuan Yang , Xiaoyang Xu , Hanyu Zhang , Zhexuan Xu , Wanqiang Xiong , Zhaoqun Chen

In real-world recommendation scenarios, users typically engage with platforms through multiple types of behavioral interactions. Multi-behavior recommendation algorithms aim to leverage various auxiliary user behaviors to enhance prediction…

Information Retrieval · Computer Science 2025-07-22 Hengyu Zhang , Chunxu Shen , Xiangguo Sun , Jie Tan , Yanchao Tan , Yu Rong , Hong Cheng , Lingling Yi

Online groups have become increasingly prevalent, providing users with space to share experiences and explore interests. Therefore, user-centric group discovery task, i.e., recommending groups to users can help both users' online…

Information Retrieval · Computer Science 2023-08-11 Xixi Wu , Yun Xiong , Yao Zhang , Yizhu Jiao , Jiawei Zhang

As the final stage of the multi-stage recommender system (MRS), re-ranking directly affects user experience and satisfaction by rearranging the input ranking lists, and thereby plays a critical role in MRS. With the advances in deep…

Information Retrieval · Computer Science 2022-04-19 Weiwen Liu , Yunjia Xi , Jiarui Qin , Fei Sun , Bo Chen , Weinan Zhang , Rui Zhang , Ruiming Tang

A recommender system is an information filtering technology which can be used to predict preference ratings of items (products, services, movies, etc) and/or to output a ranking of items that are likely to be of interest to the user.…

Information Retrieval · Computer Science 2019-01-08 Camila V. Sundermann , Marcos A. Domingues , Ricardo M. Marcacini , Solange O. Rezende

Recommender systems play an essential role in the choices people make in domains such as entertainment, shopping, food, news, employment, and education. The machine learning models underlying these recommender systems are often enormously…

Information Retrieval · Computer Science 2023-08-30 Sahil Verma , Ashudeep Singh , Varich Boonsanong , John P. Dickerson , Chirag Shah

Bundle recommendation approaches offer users a set of related items on a particular topic. The current state-of-the-art (SOTA) method utilizes contrastive learning to learn representations at both the bundle and item levels. However, due to…

Information Retrieval · Computer Science 2023-11-29 Xiaoyu Du , Kun Qian , Yunshan Ma , Xinguang Xiang

Large-scale industrial recommendation systems typically employ a two-stage paradigm of retrieval and ranking to handle huge amounts of information. Recent research focuses on improving the performance of retrieval model. A promising way is…

Information Retrieval · Computer Science 2025-08-21 Chengcheng Guo , Junda She , Kuo Cai , Shiyao Wang , Qigen Hu , Qiang Luo , Kun Gai , Guorui Zhou

To effectively assist human workers in assembly tasks a robot must proactively offer support by inferring their preferences in sequencing the task actions. Previous work has focused on learning the dominant preferences of human workers for…

Robotics · Computer Science 2021-03-30 Heramb Nemlekar , Jignesh Modi , Satyandra K. Gupta , Stefanos Nikolaidis

Sequential recommendation based on multi-interest framework models the user's recent interaction sequence into multiple different interest vectors, since a single low-dimensional vector cannot fully represent the diversity of user…

Information Retrieval · Computer Science 2021-12-17 Jie Zhang , Ke-Jia Chen , Jingqiang Chen

The homepage recommendation on most E-commerce applications places items in a hierarchical manner, where different channels display items in different styles. Existing algorithms usually optimize the performance of a single channel. So…

Information Retrieval · Computer Science 2021-12-15 Qi Hao , Tianze Luo , Guangda Huzhang

Current advances in recommender systems have been remarkably successful in optimizing immediate engagement. However, long-term user engagement, a more desirable performance metric, remains difficult to improve. Meanwhile, recent…

Information Retrieval · Computer Science 2023-06-05 Wanqi Xue , Qingpeng Cai , Zhenghai Xue , Shuo Sun , Shuchang Liu , Dong Zheng , Peng Jiang , Kun Gai , Bo An

Recommender systems are a subset of information filtering systems designed to predict and suggest items that users may find interesting or relevant based on their preferences, behaviors, or interactions. By analyzing user data such as past…

Information Retrieval · Computer Science 2024-10-01 Mahamudul Hasan

Algorithmic Recourse aims to provide actionable explanations, or recourse plans, to overturn potentially unfavourable decisions taken by automated machine learning models. In this paper, we propose an interaction paradigm based on a guided…

Human-Computer Interaction · Computer Science 2024-07-22 Seyedehdelaram Esfahani , Giovanni De Toni , Bruno Lepri , Andrea Passerini , Katya Tentori , Massimo Zancanaro

Recommender systems have played a critical role in diverse digital services such as e-commerce, streaming media, social networks, etc. If we know what a user's intent is in a given session (e.g. do they want to watch short videos or a movie…

Information Retrieval · Computer Science 2025-05-22 Sejoon Oh , Moumita Bhattacharya , Yesu Feng , Sudarshan Lamkhede

Multi-types of behaviors (e.g., clicking, adding to cart, purchasing, etc.) widely exist in most real-world recommendation scenarios, which are beneficial to learn users' multi-faceted preferences. As dependencies are explicitly exhibited…

Information Retrieval · Computer Science 2022-08-08 Chang Meng , Ziqi Zhao , Wei Guo , Yingxue Zhang , Haolun Wu , Chen Gao , Dong Li , Xiu Li , Ruiming Tang

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