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Personalized recommendation is ubiquitous, playing an important role in many online services. Substantial research has been dedicated to learning vector representations of users and items with the goal of predicting a user's preference for…

Information Retrieval · Computer Science 2020-01-03 Jianing Sun , Yingxue Zhang , Chen Ma , Mark Coates , Huifeng Guo , Ruiming Tang , Xiuqiang He

Point-of-Interest (POI) recommendation has been extensively studied and successfully applied in industry recently. However, most existing approaches build centralized models on the basis of collecting users' data. Both private data and…

Cryptography and Security · Computer Science 2020-04-28 Chaochao Chen , Jun Zhou , Bingzhe Wu , Wenjin Fang , Li Wang , Yuan Qi , Xiaolin Zheng

Click-through rate prediction plays an important role in the field of recommender system and many other applications. Existing methods mainly extract user interests from user historical behaviors. However, behavioral sequences only contain…

Information Retrieval · Computer Science 2021-09-28 Yunfei Chu , Xiaofu Chang , Kunyang Jia , Jingzhen Zhou , Hongxia Yang

This paper studies the decentralized optimization and learning problem where multiple interconnected agents aim to learn an optimal decision function defined over a reproducing kernel Hilbert space by jointly minimizing a global objective…

Machine Learning · Computer Science 2021-07-01 Ping Xu , Yue Wang , Xiang Chen , Zhi Tian

In privacy-preserving mobile network transmission scenarios with heterogeneous client data, personalized federated learning methods that decouple feature extractors and classifiers have demonstrated notable advantages in enhancing learning…

Computer Vision and Pattern Recognition · Computer Science 2025-11-14 Ming Yang , Dongrun Li , Xin Wang , Feng Li , Lisheng Fan , Chunxiao Wang , Xiaoming Wu , Peng Cheng

While deep-learning-enabled recommender systems demonstrate strong performance benchmarks, many struggle to adapt effectively in real-world environments due to limited use of user-item relationship data and insufficient transparency in…

Machine Learning · Computer Science 2025-01-09 Dong Hyun Jeon , Wenbo Sun , Houbing Herbert Song , Dongfang Liu , Velasquez Alvaro , Yixin Chloe Xie , Shuteng Niu

The popularity of location-based social networks (LBSNs) has led to a tremendous amount of user check-in data. Recommending points of interest (POIs) plays a key role in satisfying users' needs in LBSNs. While recent work has explored the…

Information Retrieval · Computer Science 2019-09-17 Mohammad Aliannejadi , Dimitrios Rafailidis , Fabio Crestani

From learning assistance to companionship, social robots promise to enhance many aspects of daily life. However, social robots have not seen widespread adoption, in part because (1) they do not adapt their behavior to new users, and (2)…

Machine Learning · Computer Science 2023-07-11 Luke Guerdan , Hatice Gunes

Traditional machine learning relies on a centralized data pipeline, i.e., data are provided to a central server for model training. In many applications, however, data are inherently fragmented. Such a decentralized nature of these…

Machine Learning · Computer Science 2021-11-02 Ye Yuan , Jun Liu , Dou Jin , Zuogong Yue , Ruijuan Chen , Maolin Wang , Chuan Sun , Lei Xu , Feng Hua , Xin He , Xinlei Yi , Tao Yang , Hai-Tao Zhang , Shaochun Sui , Han Ding

Managing evolving graph data presents substantial challenges in storage and privacy, and training graph neural networks (GNNs) on such data often leads to catastrophic forgetting, impairing performance on earlier tasks. Despite existing…

Machine Learning · Computer Science 2025-05-29 Yinlin Zhu , Miao Hu , Di Wu

Two widely considered decentralized learning algorithms are Gossip and random walk-based learning. Gossip algorithms (both synchronous and asynchronous versions) suffer from high communication cost, while random-walk based learning…

Machine Learning · Computer Science 2024-05-14 Peyman Gholami , Hulya Seferoglu

Knowledge Graph (KG), as a side-information, tends to be utilized to supplement the collaborative filtering (CF) based recommendation model. By mapping items with the entities in KGs, prior studies mostly extract the knowledge information…

Information Retrieval · Computer Science 2022-12-21 Yinwei Wei , Xiang Wang , Liqiang Nie , Shaoyu Li , Dingxian Wang , Tat-Seng Chua

There is significant recent interest to parallelize deep learning algorithms in order to handle the enormous growth in data and model sizes. While most advances focus on model parallelization and engaging multiple computing agents via using…

Machine Learning · Statistics 2017-06-27 Zhanhong Jiang , Aditya Balu , Chinmay Hegde , Soumik Sarkar

Next Point-of-Interest (POI) recommendation is a longstanding problem across the domains of Location-Based Social Networks (LBSN) and transportation. Recent Recurrent Neural Network (RNN) based approaches learn POI-POI relationships in a…

Information Retrieval · Computer Science 2020-10-15 Nicholas Lim , Bryan Hooi , See-Kiong Ng , Xueou Wang , Yong Liang Goh , Renrong Weng , Jagannadan Varadarajan

Recommender systems, which merely leverage user-item interactions for user preference prediction (such as the collaborative filtering-based ones), often face dramatic performance degradation when the interactions of users or items are…

Information Retrieval · Computer Science 2021-05-11 Xinxiao Zhao , Zhiyong Cheng , Lei Zhu , Jiecai Zheng , Xueqing Li

Decentralized Federated Learning (DFL) is a serverless collaborative machine learning paradigm where devices collaborate directly with neighbouring devices to exchange model information for learning a generalized model. However, variations…

Machine Learning · Computer Science 2026-01-29 Adnan Ahmad , Chiara Boldrini , Lorenzo Valerio , Andrea Passarella , Marco Conti

Federated graph learning (FGL) has become an important research topic in response to the increasing scale and the distributed nature of graph-structured data in the real world. In FGL, a global graph is distributed across different clients,…

Machine Learning · Computer Science 2024-08-27 Binchi Zhang , Minnan Luo , Shangbin Feng , Ziqi Liu , Jun Zhou , Qinghua Zheng

Decentralized learning (DL) has gained prominence for its potential benefits in terms of scalability, privacy, and fault tolerance. It consists of many nodes that coordinate without a central server and exchange millions of parameters in…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-05-15 Akash Dhasade , Anne-Marie Kermarrec , Rafael Pires , Rishi Sharma , Milos Vujasinovic

Next Point-of-Interest (POI) recommendation is a critical task in location-based services that aim to provide personalized suggestions for the user's next destination. Previous works on POI recommendation have laid focused on modeling the…

Information Retrieval · Computer Science 2023-10-31 Yifang Qin , Hongjun Wu , Wei Ju , Xiao Luo , Ming Zhang

Federated learning (FL) has been facilitating privacy-preserving deep learning in many walks of life such as medical image classification, network intrusion detection, and so forth. Whereas it necessitates a central parameter server for…

Machine Learning · Computer Science 2022-03-23 Yuwei Sun , Hideya Ochiai