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Implicit feedback, such as user clicks, serves as the primary data source for modern recommender systems. However, click interactions inherently contain substantial noise, including accidental clicks, clickbait-induced interactions, and…

Information Retrieval · Computer Science 2026-02-18 Xikai Yang , Yang Wang , Yilin Li , Sebastian Sun

Traditional recommender systems are typically passive in that they try to adapt their recommendations to the user's historical interests. However, it is highly desirable for commercial applications, such as e-commerce, advertisement…

Information Retrieval · Computer Science 2022-11-24 Haoren Zhu , Hao Ge , Xiaodong Gu , Pengfei Zhao , Dik Lun Lee

In the modern e-commerce, the behaviors of customers contain rich information, e.g., consumption habits, the dynamics of preferences. Recently, session-based recommendations are becoming popular to explore the temporal characteristics of…

Information Retrieval · Computer Science 2018-08-06 Zhi Li , Hongke Zhao , Qi Liu , Zhenya Huang , Tao Mei , Enhong Chen

Matrix factorization is a widely adopted recommender system technique that fits scalar rating values by dot products of user feature vectors and item feature vectors. However, the formulation of matrix factorization as a scalar fitting…

Information Retrieval · Computer Science 2021-12-07 Hao Wang

Lifelong sequential modeling (LSM) is becoming increasingly critical in social media recommendation systems for predicting the click-through rate (CTR) of items presented to users. Central to this process is the attention mechanism, which…

Information Retrieval · Computer Science 2025-04-14 Ting Guo , Zhaoyang Yang , Qinsong Zeng , Ming Chen

Personalized recommendation algorithms learn a user's preference for an item by measuring a distance/similarity between them. However, some of the existing recommendation models (e.g., matrix factorization) assume a linear relationship…

Information Retrieval · Computer Science 2019-05-03 Thanh Tran , Xinyue Liu , Kyumin Lee , Xiangnan Kong

One of the main challenges in recommender systems is data sparsity which leads to high variance. Several attempts have been made to improve the bias-variance trade-off using auxiliary information. In particular, document modeling-based…

Information Retrieval · Computer Science 2021-09-14 Meysam Varasteh , Mehdi Soleiman Nejad , Hadi Moradi , Mohammad Amin Sadeghi , Ahmad Kalhor

Due to the extensive growth of information available online, recommender systems play a more significant role in serving people's interests. Traditional recommender systems mostly use an accuracy-focused approach to produce recommendations.…

Information Retrieval · Computer Science 2023-02-22 Samira Vaez Barenji , Saeed Farzi

Item representation holds significant importance in recommendation systems, which encompasses domains such as news, retail, and videos. Retrieval and ranking models utilise item representation to capture the user-item relationship based on…

Information Retrieval · Computer Science 2023-08-21 Amit Kumar Jaiswal , Yu Xiong

Suggestion mining is increasingly becoming an important task along with sentiment analysis. In today's cyberspace world, people not only express their sentiments and dispositions towards some entities or services, but they also spend…

Computation and Language · Computer Science 2018-11-02 Hitesh Golchha , Deepak Gupta , Asif Ekbal , Pushpak Bhattacharyya

State of the art music recommender systems mainly rely on either matrix factorization-based collaborative filtering approaches or deep learning architectures. Deep learning models usually use metadata for content-based filtering or predict…

Information Retrieval · Computer Science 2019-12-20 Khalil Damak , Olfa Nasraoui

Pre-ranking plays a crucial role in large-scale recommender systems by significantly improving the efficiency and scalability within the constraints of providing high-quality candidate sets in real time. The two-tower model is widely used…

Information Retrieval · Computer Science 2025-09-17 Chao Xiong , Xianwen Yu , Wei Xu , Lei Cheng , Chuan Yuan , Linjian Mo

Project ATHENA aims to develop an application to address information overload, primarily focused on Recommendation Systems (RSs) with the personalization and user experience design of a modern system. Two machine learning (ML) algorithms…

Information Retrieval · Computer Science 2022-02-15 Lordjette Leigh M. Lecaros , Concepcion L. Khan

One key property in recommender systems is the long-tail distribution in user-item interactions where most items only have few user feedback. Improving the recommendation of tail items can promote novelty and bring positive effects to both…

Information Retrieval · Computer Science 2022-10-11 Tieyun Qian , Yile Liang , Qing Li , Xuan Ma , Ke Sun , Zhiyong Peng

The past few years have witnessed the great success of recommender systems, which can significantly help users find out personalized items for them from the information era. One of the most widely applied recommendation methods is the…

Information Retrieval · Computer Science 2015-06-17 Chu-Xu Zhang , Zi-Ke Zhang , Lu Yu , Chuang Liu , Hao Liu , Xiao-Yong Yan

Multifaceted user modeling aims to uncover fine-grained patterns and learn representations from user data, revealing their diverse interests and characteristics, such as profile, preference, and personality. Recent studies on foundation…

Information Retrieval · Computer Science 2024-12-24 Chunxu Zhang , Guodong Long , Hongkuan Guo , Zhaojie Liu , Guorui Zhou , Zijian Zhang , Yang Liu , Bo Yang

This paper proposes Text mAtching based SequenTial rEcommendation model (TASTE), which maps items and users in an embedding space and recommends items by matching their text representations. TASTE verbalizes items and user-item interactions…

Information Retrieval · Computer Science 2023-08-29 Zhenghao Liu , Sen Mei , Chenyan Xiong , Xiaohua Li , Shi Yu , Zhiyuan Liu , Yu Gu , Ge Yu

Recommender systems are widely used to recommend the most appealing items to users. These recommendations can be generated by applying collaborative filtering methods. The low-rank matrix completion method is the state-of-the-art…

Information Retrieval · Computer Science 2020-01-07 Mohit Sharma , George Karypis

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

Recommending new items to existing users has remained a challenging problem due to absence of user's past preferences for these items. The user personalized non-collaborative methods based on item features can be used to address this item…

Information Retrieval · Computer Science 2019-04-29 Mohit Sharma , Jiayu Zhou , Junling Hu , George Karypis