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We propose a Bayesian propensity score-augmented latent factor model for causal inference with time-series cross-sectional data. The framework explicitly models the treatment assignment mechanism by incorporating latent factor loadings,…

Methodology · Statistics 2026-03-27 Licheng Liu

Recent research efforts have investigated how to integrate Large Language Models (LLMs) into recommendation, capitalizing on their semantic comprehension and open-world knowledge for user behavior understanding. These approaches…

Information Retrieval · Computer Science 2025-04-15 Haokai Ma , Yunshan Ma , Ruobing Xie , Lei Meng , Jialie Shen , Xingwu Sun , Zhanhui Kang , Tat-Seng Chua

Recommender systems have become an essential tool for providers and users of online services and goods, especially with the increased use of the Internet to access information and purchase products and services. This work proposes a novel…

Information Retrieval · Computer Science 2022-10-17 Abdullah Alhadlaq , Said Kerrache , Hatim Aboalsamh

Recommender systems are one of the most applied methods in machine learning and find applications in many areas, ranging from economics to the Internet of things. This article provides a general overview of modern approaches to recommender…

Information Retrieval · Computer Science 2021-09-28 Irina Beregovskaya , Mikhail Koroteev

Many machine learning systems utilize latent factors as internal representations for making predictions. Since these latent factors are largely uninterpreted, however, predictions made using them are opaque. Collaborative filtering via…

Information Retrieval · Computer Science 2018-04-11 Anupam Datta , Sophia Kovaleva , Piotr Mardziel , Shayak Sen

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

Data sparsity is an inherent challenge in the recommender systems, where most of the data is collected from the implicit feedbacks of users. This causes two difficulties in designing effective algorithms: first, the majority of users only…

Information Retrieval · Computer Science 2020-07-15 Wenhui Yu , Xiao Lin , Junfeng Ge , Wenwu Ou , Zheng Qin

CDR (Cross-Domain Recommendation), i.e., leveraging information from multiple domains, is a critical solution to data sparsity problem in recommendation system. The majority of previous research either focused on single-target CDR (STCDR)…

Information Retrieval · Computer Science 2024-11-27 Xiaopeng Liu , Juan Zhang , Chongqi Ren , Shenghui Xu , Zhaoming Pan , Zhimin Zhang

Recommender systems are frequently challenged by the data sparsity problem. One approach to mitigate this issue is through cross-domain recommendation techniques. In a cross-domain context, sharing knowledge between domains can enhance the…

Information Retrieval · Computer Science 2023-11-06 Zixuan Yi , Iadh Ounis , Craig Macdonald

Retrieval tasks typically require a ranking of items given a query. Collaborative filtering tasks, on the other hand, learn to model user's preferences over items. In this paper we study the joint problem of recommending items to a user…

Information Retrieval · Computer Science 2012-06-22 Jason Weston , Chong Wang , Ron Weiss , Adam Berenzweig

Existing techniques to adapt semantic segmentation networks across the source and target domains within deep convolutional neural networks (CNNs) deal with all the samples from the two domains in a global or category-aware manner. They do…

Computer Vision and Pattern Recognition · Computer Science 2020-12-18 Minsu Kim , Sunghun Joung , Seungryong Kim , JungIn Park , Ig-Jae Kim , Kwanghoon Sohn

Traditional domain generalization methods often rely on domain alignment to reduce inter-domain distribution differences and learn domain-invariant representations. However, domain shifts are inherently difficult to eliminate, which limits…

Computer Vision and Pattern Recognition · Computer Science 2024-12-10 Yuheng Xu , Taiping Zhang

Collaborative Filtering(CF) recommender is a crucial application in the online market and ecommerce. However, CF recommender has been proven to suffer from persistent problems related to sparsity of the user rating that will further lead to…

Information Retrieval · Computer Science 2022-07-27 Elliot Dang , Zheyuan Hu , Tong Li

Probabilistic load forecasting (PLF) is a key component in the extended tool-chain required for efficient management of smart energy grids. Neural networks are widely considered to achieve improved prediction performances, supporting highly…

Signal Processing · Electrical Eng. & Systems 2021-01-12 Alessandro Brusaferri , Matteo Matteucci , Stefano Spinelli , Andrea Vitali

Domain Generalized Semantic Segmentation (DGSS) is a critical yet challenging task, as domain shifts in unseen environments can severely compromise model performance. While recent studies enhance feature alignment by projecting features…

Computer Vision and Pattern Recognition · Computer Science 2025-07-30 I-Hsiang Chen , Hua-En Chang , Wei-Ting Chen , Jenq-Neng Hwang , Sy-Yen Kuo

Collaborative Filtering is largely applied to personalize item recommendation but its performance is affected by the sparsity of rating data. In order to address this issue, recent systems have been developed to improve recommendation by…

Information Retrieval · Computer Science 2020-03-31 Noemi Mauro , Liliana Ardissono

Recommender systems are aimed at generating a personalized ranked list of items that an end user might be interested in. With the unprecedented success of deep learning in computer vision and speech recognition, recently it has been a hot…

Information Retrieval · Computer Science 2018-08-16 Bo Song , Xin Yang , Yi Cao , Congfu Xu

Federated cross-domain recommendation (Federated CDR) aims to collaboratively learn personalized recommendation models across heterogeneous domains while preserving data privacy. Recently, large language model (LLM)-based recommendation…

Information Retrieval · Computer Science 2026-02-19 Xinrui He , Ting-Wei Li , Tianxin Wei , Xuying Ning , Xinyu He , Wenxuan Bao , Hanghang Tong , Jingrui He

Traditional recommendation systems rely on past usage data in order to generate new recommendations. Those approaches fail to generate sensible recommendations for new users and items into the system due to missing information about their…

Information Retrieval · Computer Science 2017-06-20 Ivica Obadić , Gjorgji Madjarov , Ivica Dimitrovski , Dejan Gjorgjevikj

Cross-domain recommendation (CDR) aims to address the data-sparsity problem by transferring knowledge across domains. Existing CDR methods generally assume that the user-item interaction data is shareable between domains, which leads to…

Information Retrieval · Computer Science 2024-08-28 Li Wang , Shoujin Wang , Quangui Zhang , Qiang Wu , Min Xu