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Recommender system (RS) has become a crucial module in most web-scale applications. Recently, most RSs are in the waterfall form based on the cloud-to-edge framework, where recommended results are transmitted to edge (e.g., user mobile) by…

Information Retrieval · Computer Science 2020-09-16 Yu Gong , Ziwen Jiang , Yufei Feng , Binbin Hu , Kaiqi Zhao , Qingwen Liu , Wenwu Ou

The success or failure of a project is highly related to recognizing the right stakeholders and accurately finding and discovering their requirements. However, choosing the proper elicitation technique was always a considerable challenge…

Information Retrieval · Computer Science 2025-08-05 Ali Fallahi , Amineh Amini , Azam Bastanfard , Hadi Saboohi

Modern recommender systems trained on domain-specific data often struggle to generalize across multiple domains. Cross-domain sequential recommendation has emerged as a promising research direction to address this challenge; however,…

Information Retrieval · Computer Science 2026-01-06 Hyunsoo Kim , Jaewan Moon , Seongmin Park , Jongwuk Lee

Online recommendation is an essential functionality across a variety of services, including e-commerce and video streaming, where items to buy, watch, or read are suggested to users. Justifying recommendations, i.e., explaining why a user…

Information Retrieval · Computer Science 2020-11-12 Namyong Park , Andrey Kan , Christos Faloutsos , Xin Luna Dong

Recently, neural networks have been widely used in e-commerce recommender systems, owing to the rapid development of deep learning. We formalize the recommender system as a sequential recommendation problem, intending to predict the next…

Information Retrieval · Computer Science 2020-08-04 Yukuo Cen , Jianwei Zhang , Xu Zou , Chang Zhou , Hongxia Yang , Jie Tang

LLM-based agents have gained considerable attention for their decision-making skills and ability to handle complex tasks. Recognizing the current gap in leveraging agent capabilities for multi-agent collaboration in recommendation systems,…

Information Retrieval · Computer Science 2024-11-04 Zhefan Wang , Yuanqing Yu , Wendi Zheng , Weizhi Ma , Min Zhang

This paper presents EasyRAG, a simple, lightweight, and efficient retrieval-augmented generation framework for automated network operations. Our framework has three advantages. The first is accurate question answering. We designed a…

Computation and Language · Computer Science 2024-10-16 Zhangchi Feng , Dongdong Kuang , Zhongyuan Wang , Zhijie Nie , Yaowei Zheng , Richong Zhang

This paper presents ReasoningRec, a reasoning-based recommendation framework that leverages Large Language Models (LLMs) to bridge the gap between recommendations and human-interpretable explanations. In contrast to conventional…

Information Retrieval · Computer Science 2024-10-31 Millennium Bismay , Xiangjue Dong , James Caverlee

While the OneRec series has successfully unified the fragmented recommendation pipeline into an end-to-end generative framework, a significant gap remains between recommendation systems and general intelligence. Constrained by isolated…

With the explosive growth of users and items, Recommender Systems are facing unprecedented challenges in terms of retrieval efficiency and storage overhead. Learning to Hash techniques have emerged as a promising solution to these issues by…

Information Retrieval · Computer Science 2025-10-24 Fangyuan Luo , Yankai Chen , Jun Wu , Tong Li , Philip S. Yu , Xue Liu

The increasing popularity of real-world recommender systems produces data continuously and rapidly, and it becomes more realistic to study recommender systems under streaming scenarios. Data streams present distinct properties such as…

Social and Information Networks · Computer Science 2016-07-22 Shiyu Chang , Yang Zhang , Jiliang Tang , Dawei Yin , Yi Chang , Mark A. Hasegawa-Johnson , Thomas S. Huang

The parallelized multi-retrieval architecture has been widely adopted in large-scale recommender systems for its computational efficiency and comprehensive coverage of user interests. Many retrieval methods typically integrate additional…

Information Retrieval · Computer Science 2025-12-09 Tao Wang , Xun Luo , Jinlong Guo , Yuliang Yan , Jian Wu , Yuning Jiang , Bo Zheng

Recent advances in Large Language Models (LLMs) have opened new possibilities for recommendation systems, though current approaches such as TALLRec face challenges in explainability and cold-start scenarios. We present ExplainRec, a…

Information Retrieval · Computer Science 2025-11-20 Bo Ma , LuYao Liu , ZeHua Hu , Simon Lau

Training recommendation models on large datasets requires significant time and resources. It is desired to construct concise yet informative datasets for efficient training. Recent advances in dataset condensation show promise in addressing…

Information Retrieval · Computer Science 2025-04-10 Jiahao Wu , Wenqi Fan , Jingfan Chen , Shengcai Liu , Qijiong Liu , Rui He , Qing Li , Ke Tang

Traditional recommendation systems suffer from inconsistency in multi-stage optimization objectives. Generative Recommendation (GR) mitigates them through an end-to-end framework; however, existing methods still rely on matching mechanisms…

Social recommendation has shown promising improvements over traditional systems since it leverages social correlation data as an additional input. Most existing work assumes that all data are available to the recommendation platform.…

Machine Learning · Computer Science 2022-02-16 Jamie Cui , Chaochao Chen , Lingjuan Lyu , Carl Yang , Li Wang

Sequential recommendation demonstrates the capability to recommend items by modeling the sequential behavior of users. Traditional methods typically treat users as sequences of items, overlooking the collaborative relationships among them.…

Information Retrieval · Computer Science 2023-08-15 Sijia Liu , Jiahao Liu , Hansu Gu , Dongsheng Li , Tun Lu , Peng Zhang , Ning Gu

We introduce EigenRec; a versatile and efficient Latent-Factor framework for Top-N Recommendations that includes the well-known PureSVD algorithm as a special case. EigenRec builds a low dimensional model of an inter-item proximity matrix…

Information Retrieval · Computer Science 2018-05-04 Athanasios N. Nikolakopoulos , Vassilis Kalantzis , Efstratios Gallopoulos , John D. Garofalakis

Recommender systems help users navigate information overload by providing personalized recommendations aligned with their preferences. Collaborative Filtering (CF) is a widely adopted approach, but while advanced techniques like graph…

Information Retrieval · Computer Science 2024-09-24 Qiyao Ma , Xubin Ren , Chao Huang

Sequential Recommender Systems (SRSs) have emerged as a highly efficient approach to recommendation systems. By leveraging sequential data, SRSs can identify temporal patterns in user behaviour, significantly improving recommendation…