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Accurate predictions in session-based recommendations have progressed, but a few studies have focused on skewed recommendation lists caused by popularity bias. Existing models for mitigating popularity bias have attempted to reduce the…

Information Retrieval · Computer Science 2022-10-24 Jiayi Chen , Wen Wu , Wei Zheng , Liang He

In this paper, we consider decentralized sequential decision making in distributed online recommender systems, where items are recommended to users based on their search query as well as their specific background including history of bought…

Social and Information Networks · Computer Science 2015-03-25 Cem Tekin , Simpson Zhang , Mihaela van der Schaar

Cross-domain Recommendation systems leverage multi-domain user interactions to improve performance, especially in sparse data or new user scenarios. However, CDR faces challenges such as effectively capturing user preferences and avoiding…

Information Retrieval · Computer Science 2024-10-10 Junxiong Tong , Mingjia Yin , Hao Wang , Qiushi Pan , Defu Lian , Enhong Chen

Convolutional Neural Networks (CNNs) have been recently introduced in the domain of session-based next item recommendation. An ordered collection of past items the user has interacted with in a session (or sequence) are embedded into a…

Information Retrieval · Computer Science 2018-11-30 Fajie Yuan , Alexandros Karatzoglou , Ioannis Arapakis , Joemon M Jose , Xiangnan He

Conventional knowledge distillation, designed for model compression, fails on long-tailed distributions because the teacher model tends to be biased toward head classes and provides limited supervision for tail classes. We propose…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Seonghak Kim

Sequential recommendation techniques provide users with product recommendations fitting their current preferences by handling dynamic user preferences over time. Previous studies have focused on modeling sequential dynamics without much…

Information Retrieval · Computer Science 2021-05-25 Seongwon Jang , Hoyeop Lee , Hyunsouk Cho , Sehee Chung

A large amount of information exists in reviews written by users. This source of information has been ignored by most of the current recommender systems while it can potentially alleviate the sparsity problem and improve the quality of…

Machine Learning · Computer Science 2017-01-18 Lei Zheng , Vahid Noroozi , Philip S. Yu

Real-world visual recognition problems often exhibit long-tailed distributions, where the amount of data for learning in different categories shows significant imbalance. Standard classification models learned on such data distribution…

Computer Vision and Pattern Recognition · Computer Science 2021-08-31 Chi Zhang , Guosheng Lin , Lvlong Lai , Henghui Ding , Qingyao Wu

This paper shows that deep neural network (DNN) can be used for efficient and distributed channel estimation, quantization, feedback, and downlink multiuser precoding for a frequency-division duplex massive multiple-input multiple-output…

Information Theory · Computer Science 2021-01-27 Foad Sohrabi , Kareem M. Attiah , Wei Yu

The two-tower architecture has been widely applied for learning item and user representations, which is important for large-scale recommender systems. Many two-tower models are trained using various in-batch negative sampling strategies,…

Information Retrieval · Computer Science 2021-10-29 Jinpeng Wang , Jieming Zhu , Xiuqiang He

The diversity of recommendation is equally crucial as accuracy in improving user experience. Existing studies, e.g., Determinantal Point Process (DPP) and Maximal Marginal Relevance (MMR), employ a greedy paradigm to iteratively select…

Information Retrieval · Computer Science 2024-08-15 Fan Li , Xu Si , Shisong Tang , Dingmin Wang , Kunyan Han , Bing Han , Guorui Zhou , Yang Song , Hechang Chen

Cross-Domain Sequential Recommendation (CDSR) leverages user behaviors across domains to enhance recommendation quality. However, naive aggregation of sequential signals can introduce conflicting domain-specific preferences, leading to…

Information Retrieval · Computer Science 2025-09-12 Xiaoxin Ye , Chengkai Huang , Hongtao Huang , Lina Yao

Lifelong user behavior sequences are crucial for capturing user interests and predicting user responses in modern recommendation systems. A two-stage paradigm is typically adopted to handle these long sequences: a subset of relevant…

Information Retrieval · Computer Science 2025-03-27 Ningya Feng , Junwei Pan , Jialong Wu , Baixu Chen , Ximei Wang , Qian Li , Xian Hu , Jie Jiang , Mingsheng Long

Traditional recommendation systems mainly focus on modeling user interests. However, the dynamics of recommended items caused by attribute modifications (e.g. changes in prices) are also of great importance in real systems, especially in…

Information Retrieval · Computer Science 2022-08-30 Rui Ma , Ning Liu , Jingsong Yuan , Huafeng Yang , Jiandong Zhang

Item IDs form the backbone of industrial recommender systems, but suffer from representation instability and poor long-tail generalization in large, dynamic item corpora. Semantic IDs (SIDs) mitigate these issues by enabling knowledge…

Information Retrieval · Computer Science 2026-03-12 Yi Xu , Moyu Zhang , Chaofan Fan , Jinxin Hu , Xiaochen Li , Yu Zhang , Xiaoyi Zeng , Jing Zhang

Graph Neural Network (GNN)-based models have become the mainstream approach for recommender systems. Despite the effectiveness, they are still suffering from the cold-start problem, i.e., recommend for few-interaction items. Existing…

Information Retrieval · Computer Science 2023-08-08 Taichi Liu , Chen Gao , Zhenyu Wang , Dong Li , Jianye Hao , Depeng Jin , Yong Li

The increasing availability and diversity of multimodal data in recommender systems offer new avenues for enhancing recommendation accuracy and user satisfaction. However, these systems must contend with high-dimensional, sparse user-item…

Information Retrieval · Computer Science 2024-12-04 Yasser Khalafaoui , Martino Lovisetto , Basarab Matei , Nistor Grozavu

Medical image segmentation using deep neural networks has been highly successful. However, the effectiveness of these networks is often limited by inadequate dense prediction and inability to extract robust features. To achieve refined…

Computer Vision and Pattern Recognition · Computer Science 2024-03-06 Suraj Mishra , Danny Z. Chen

Despite the recent success of deep neural networks, it remains challenging to effectively model the long-tail class distribution in visual recognition tasks. To address this problem, we first investigate the performance bottleneck of the…

Computer Vision and Pattern Recognition · Computer Science 2021-03-31 Songyang Zhang , Zeming Li , Shipeng Yan , Xuming He , Jian Sun

Recommender systems play a crucial role in shaping information we encounter online, whether on social media or when using content platforms, thereby influencing our beliefs, choices, and behaviours. Many recent works address the issue of…

Information Retrieval · Computer Science 2024-10-07 Václav Blahut , Karel Koupil