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In e-commerce, where users face a vast array of possible item choices, recommender systems are vital for helping them discover suitable items they might otherwise overlook. While many recommender systems primarily rely on a user's purchase…

Information Retrieval · Computer Science 2025-08-29 Kyungho Kim , Sunwoo Kim , Geon Lee , Kijung Shin

Currently, there starts a research trend to leverage neural architecture for recommendation systems. Though several deep recommender models are proposed, most methods are too simple to characterize users' complex preference. In this paper,…

Information Retrieval · Computer Science 2018-07-26 Han Xiao , Yidong Chen , Xiaodong Shi

The majority of existing recommender systems rely on user ratings, which are limited by the lack of user collaboration and the sparsity problem. To address these issues, this study proposes a behavior-based recommender system that leverages…

Information Retrieval · Computer Science 2024-03-28 Reza Barzegar Nozari , Mahdi Divsalar , Sepehr Akbarzadeh Abkenar , Mohammadreza Fadavi Amiri , Ali Divsalar

Sequential recommendation aims to identify and recommend the next few items for a user that the user is most likely to purchase/review, given the user's purchase/rating trajectories. It becomes an effective tool to help users select…

Information Retrieval · Computer Science 2021-01-05 Bo Peng , Zhiyun Ren , Srinivasan Parthasarathy , Xia Ning

Traditional recommendation proposals, including content-based and collaborative filtering, usually focus on similarity between items or users. Existing approaches lack ways of introducing unexpectedness into recommendations, prioritizing…

Information Retrieval · Computer Science 2024-05-15 Oliver Baumann , Durgesh Nandini , Anderson Rossanez , Mirco Schoenfeld , Julio Cesar dos Reis

Next-item prediction is a a popular problem in the recommender systems domain. As the name suggests, the task is to recommend subsequent items that a user would be interested in given contextual information and historical interaction data.…

Information Retrieval · Computer Science 2022-05-12 Manoj Reddy Dareddy , Zijun Xue , Nicholas Lin , Junghoo Cho

Recommender engines have become an integral component in today's e-commerce systems. From recommending books in Amazon to finding friends in social networks such as Facebook, they have become omnipresent. Generally, recommender systems can…

Information Retrieval · Computer Science 2017-11-15 Laknath Semage

Session-based recommender systems typically focus on using only the triplet (user_id, timestamp, item_id) to make predictions of users' next actions. In this paper, we aim to utilize side information to help recommender systems catch…

Information Retrieval · Computer Science 2024-06-04 Yukun Jiang , Leo Guo , Xinyi Chen , Jing Xi Liu

This paper studies recommender systems with knowledge graphs, which can effectively address the problems of data sparsity and cold start. Recently, a variety of methods have been developed for this problem, which generally try to learn…

Information Retrieval · Computer Science 2022-01-10 Weiping Song , Zhijian Duan , Ziqing Yang , Hao Zhu , Ming Zhang , Jian Tang

Graph-based recommendation systems use higher-order user and item embeddings for next-item predictions. Dynamically adding collaborative signals from neighbors helps to use similar users' preferences during learning. While item-item…

Information Retrieval · Computer Science 2025-06-09 Anushka Tiwari , Haimonti Dutta , Shahrzad Khanizadeh

Recommender systems have become increasingly important with the rise of the web as a medium for electronic and business transactions. One of the key drivers of this technology is the ease with which users can provide feedback about their…

Information Retrieval · Computer Science 2024-11-05 Dong Li

Sequential recommendations aim to capture users' preferences from their historical interactions so as to predict the next item that they will interact with. Sequential recommendation methods usually assume that all items in a user's…

Information Retrieval · Computer Science 2023-04-24 Yujie Lin , Chenyang Wang , Zhumin Chen , Zhaochun Ren , Xin Xin , Qiang Yan , Maarten de Rijke , Xiuzhen Cheng , Pengjie Ren

Session-based recommendations are highly relevant in many modern on-line services (e.g. e-commerce, video streaming) and recommendation settings. Recently, Recurrent Neural Networks have been shown to perform very well in session-based…

Machine Learning · Computer Science 2017-08-25 Massimo Quadrana , Alexandros Karatzoglou , Balázs Hidasi , Paolo Cremonesi

As the last stage of a typical \textit{recommendation system}, \textit{collective recommendation} aims to give the final touches to the recommended items and their layout so as to optimize overall objectives such as diversity and whole-page…

Information Retrieval · Computer Science 2024-11-04 Shuai Xiao , Zaifan Jiang

The advent of the information age has led to the problems of information overload and unclear demands. As an information filtering system, personalized recommendation systems predict users' behavior and preference for items and improves…

Cryptography and Security · Computer Science 2023-01-11 Dazhi Hu

Recommender systems play an essential role in music streaming services, prominently in the form of personalized playlists. Exploring the user interactions within these listening sessions can be beneficial to understanding the user…

Information Retrieval · Computer Science 2019-04-24 Sainath Adapa

Nowadays, privacy preserving machine learning has been drawing much attention in both industry and academy. Meanwhile, recommender systems have been extensively adopted by many commercial platforms (e.g. Amazon) and they are mainly built…

Machine Learning · Computer Science 2020-03-06 Chaochao Chen , Liang Li , Bingzhe Wu , Cheng Hong , Li Wang , Jun Zhou

Traditional recommender systems primarily rely on a single type of user-item interaction, such as item purchases or ratings, to predict user preferences. However, in real-world scenarios, users engage in a variety of behaviors, such as…

Information Retrieval · Computer Science 2025-03-11 Kyungho Kim , Sunwoo Kim , Geon Lee , Jinhong Jung , Kijung Shin

Personalized recommendations are popular in these days of Internet driven activities, specifically shopping. Recommendation methods can be grouped into three major categories, content based filtering, collaborative filtering and machine…

Information Retrieval · Computer Science 2021-01-11 Yuhao Mao , Serguei A. Mokhov , Sudhir P. Mudur

Session-based recommendation is a problem setting where the task of a recommender system is to make suitable item suggestions based only on a few observed user interactions in an ongoing session. The lack of long-term preference information…

Information Retrieval · Computer Science 2020-08-18 Andres Ferraro , Dietmar Jannach , Xavier Serra