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Large recommendation models have demonstrated substantial potential gains under scaling laws, yet these gains are difficult to realize in industrial recommendation systems because real-world deployment requires lightweight models with…

There exist situations of decision-making under information overload in the Internet, where people have an overwhelming number of available options to choose from, e.g. products to buy in an e-commerce site, or restaurants to visit in a…

Social and Information Networks · Computer Science 2021-01-14 Ivan Palomares , Carlos Porcel , Luiz Pizzato , Ido Guy , Enrique Herrera-Viedma

The scarcity of high-quality training data presents a fundamental bottleneck to scaling machine learning models. This challenge is particularly acute in recommendation systems, where extreme sparsity in user interactions leads to rugged…

Information Retrieval · Computer Science 2026-05-12 Luankang Zhang , Hao Wang , Zhongzhou Liu , Mingjia Yin , Yonghao Huang , Jiaqi Li , Wei Guo , Yong Liu , Huifeng Guo , Defu Lian , Enhong Chen

Recommender systems have been widely applied in different real-life scenarios to help us find useful information. In particular, Reinforcement Learning (RL) based recommender systems have become an emerging research topic in recent years,…

Information Retrieval · Computer Science 2023-06-13 Yuanguo Lin , Yong Liu , Fan Lin , Lixin Zou , Pengcheng Wu , Wenhua Zeng , Huanhuan Chen , Chunyan Miao

Online educational platforms are playing a primary role in mediating the success of individuals' careers. Therefore, while building overlying content recommendation services, it becomes essential to guarantee that learners are provided with…

Information Retrieval · Computer Science 2022-08-24 Mirko Marras , Ludovico Boratto , Guilherme Ramos , Gianni Fenu

The core of the general recommender systems lies in learning high-quality embedding representations of users and items to investigate their positional relations in the feature space. Unfortunately, data sparsity caused by…

Information Retrieval · Computer Science 2025-04-24 Yi Zhang , Yiwen Zhang

The technical foundations of recommender systems have progressed from collaborative filtering to complex neural models and, more recently, large language models. Despite these technological advances, deployed systems often underserve their…

Information Retrieval · Computer Science 2026-03-10 Kesha Ou , Chenghao Wu , Xiaolei Wang , Bowen Zheng , Wayne Xin Zhao , Weitao Li , Long Zhang , Sheng Chen , Ji-Rong Wen

In this paper we propose two new algorithms based on biclustering analysis, which can be used at the basis of a recommender system for educational orientation of Russian School graduates. The first algorithm was designed to help students…

Artificial Intelligence · Computer Science 2013-12-03 Dmitry I. Ignatov , Jonas Poelmans , Vasily Zaharchuk

Personalized learning is a student-centered educational approach that adapts content, pace, and assessment to meet each learner's unique needs. As the key technique to implement the personalized learning, learning path recommendation…

Information Retrieval · Computer Science 2025-07-09 Afsana Nasrin , Lijun Qian , Pamela Obiomon , Xishuang Dong

The integration of AI in education offers significant potential to enhance learning efficiency. Large Language Models (LLMs), such as ChatGPT, Gemini, and Llama, allow students to query a wide range of topics, providing unprecedented…

Information Retrieval · Computer Science 2025-04-29 Zhaoxing Li , Vahid Yazdanpanah , Jindi Wang , Wen Gu , Lei Shi , Alexandra I. Cristea , Sarah Kiden , Sebastian Stein

Recommender systems can automatically recommend users with items that they probably like. The goal of them is to model the user-item interaction by effectively representing the users and items. Existing methods have primarily learned the…

Information Retrieval · Computer Science 2024-04-30 Xue Dong , Xuemeng Song , Na Zheng , Yinwei Wei , Zhongzhou Zhao

Modern recommender systems operate in uniquely dynamic settings: user interests, item pools, and popularity trends shift continuously, and models must adapt in real time without forgetting past preferences. While existing tutorials on…

Information Retrieval · Computer Science 2025-07-08 Hyunsik Yoo , SeongKu Kang , Hanghang Tong

In the vast landscape of internet information, recommender systems (RecSys) have become essential for guiding users through a sea of choices aligned with their preferences. These systems have applications in diverse domains, such as news…

Information Retrieval · Computer Science 2024-08-01 Liangwei Yang , Zhiwei Liu , Jianguo Zhang , Rithesh Murthy , Shelby Heinecke , Huan Wang , Caiming Xiong , Philip S. Yu

Recommender systems serve as foundational infrastructure in modern information ecosystems, helping users navigate digital content and discover items aligned with their preferences. At their core, recommender systems address a fundamental…

Information Retrieval · Computer Science 2026-05-12 Min Hou , Le Wu , Yuxin Liao , Yonghui Yang , Zhen Zhang , Yu Wang , Changlong Zheng , Han Wu , Richang Hong

Online recommender systems (RS) aim to match user needs with the vast amount of resources available on various platforms. A key challenge is to model user preferences accurately under the condition of data sparsity. To address this…

Information Retrieval · Computer Science 2023-09-20 Ning Wu , Ming Gong , Linjun Shou , Jian Pei , Daxin Jiang

Recommendations Systems allow users to identify trending items among a community while being timely and relevant to the user's expectations. When the purpose of various Recommendation Systems differs, the required type of recommendations…

Information Retrieval · Computer Science 2022-05-05 Dinuka Ravijaya Piyadigama , Guhanathan Poravi

In this paper, we present preliminary results of AFEL-REC, a recommender system for social learning environments. AFEL-REC is build upon a scalable software architecture to provide recommendations of learning resources in near real-time.…

Information Retrieval · Computer Science 2018-08-15 Dominik Kowald , Emanuel Lacic , Dieter Theiler , Elisabeth Lex

Recommender systems are intrinsically tied to a reliability/coverage dilemma: The more reliable we desire the forecasts, the more conservative the decision will be and thus, the fewer items will be recommended. This causes a detriment to…

Information Retrieval · Computer Science 2024-05-22 Diego Pérez-López , Fernando Ortega , Ángel González-Prieto , Jorge Dueñas-Lerín

In real-world recommendation problems, especially those with a formidably large item space, users have to gradually learn to estimate the utility of any fresh recommendations from their experience about previously consumed items. This in…

Machine Learning · Computer Science 2022-02-07 Fan Yao , Chuanhao Li , Denis Nekipelov , Hongning Wang , Haifeng Xu

Recently, Large Language Model (LLM)-empowered recommender systems have revolutionized personalized recommendation frameworks and attracted extensive attention. Despite the remarkable success, existing LLM-empowered RecSys have been…

Information Retrieval · Computer Science 2025-04-04 Liangbo Ning , Wenqi Fan , Qing Li