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Social recommender systems exploit users' social relationships to improve the recommendation accuracy. Intuitively, a user tends to trust different subsets of her social friends, regarding with different scenarios. Therefore, the main…

信息检索 · 计算机科学 2016-03-16 Yong Liu , Peilin Zhao , Xin Liu , Min Wu , Xiao-Li Li

An effective content recommendation in modern social media platforms should benefit both creators to bring genuine benefits to them and consumers to help them get really interesting content. In this paper, we propose a model called Social…

信息检索 · 计算机科学 2019-06-18 Wenyi Xiao , Huan Zhao , Haojie Pan , Yangqiu Song , Vincent W. Zheng , Qiang Yang

In modern recommender systems, especially in e-commerce, predicting multiple targets such as click-through rate (CTR) and post-view conversion rate (CTCVR) is common. Multi-task recommender systems are increasingly popular in both research…

信息检索 · 计算机科学 2024-08-21 Yue Ding , Yanbiao Ji , Xun Cai , Xin Xin , Yuxiang Lu , Suizhi Huang , Chang Liu , Xiaofeng Gao , Tsuyoshi Murata , Hongtao Lu

To protect user privacy and meet law regulations, federated (machine) learning is obtaining vast interests in recent years. The key principle of federated learning is training a machine learning model without needing to know each user's…

密码学与安全 · 计算机科学 2022-04-12 Di Chai , Leye Wang , Kai Chen , Qiang Yang

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…

Neural networks, with the capability to provide efficient predictive models, have been widely used in medical, financial, and other fields, bringing great convenience to our lives. However, the high accuracy of the model requires a large…

密码学与安全 · 计算机科学 2021-04-13 Zhengqiang Ge , Zhipeng Zhou , Dong Guo , Qiang Li

Recently, there is a surge of social recommendation, which leverages social relations among users to improve recommendation performance. However, in many applications, social relations are absent or very sparse. Meanwhile, the attribute…

社会与信息网络 · 计算机科学 2015-11-13 Chuan Shi , Jian Liu , Fuzhen Zhuang , Philip S. Yu , Bin Wu

To preserve data privacy, multi-party computation (MPC) enables executing Machine Learning (ML) algorithms on private data. However, MPC frameworks do not include optimized operations on sparse data. This absence makes them unsuitable for…

密码学与安全 · 计算机科学 2026-03-04 Marc Damie , Florian Hahn , Andreas Peter , Jan Ramon

Today, large amounts of valuable data are distributed among millions of user-held devices, such as personal computers, phones, or Internet-of-things devices. Many companies collect such data with the goal of using it for training machine…

机器学习 · 计算机科学 2020-08-21 Valentin Hartmann , Konark Modi , Josep M. Pujol , Robert West

Federated recommendation applies federated learning techniques in recommendation systems to help protect user privacy by exchanging models instead of raw user data between user devices and the central server. Due to the heterogeneity in…

信息检索 · 计算机科学 2022-08-22 Sichun Luo , Yuanzhang Xiao , Linqi Song

Deep learning has brought great progress for the sequential recommendation (SR) tasks. With advanced network architectures, sequential recommender models can be stacked with many hidden layers, e.g., up to 100 layers on real-world…

信息检索 · 计算机科学 2021-05-13 Jiachun Wang , Fajie Yuan , Jian Chen , Qingyao Wu , Min Yang , Yang Sun , Guoxiao Zhang

Sequential recommender systems rank relevant items by modeling a user's interaction history and computing the inner product between the resulting user representation and stored item embeddings. To avoid the significant memory overhead of…

Collaborative filtering has been largely used to advance modern recommender systems to predict user preference. A key component in collaborative filtering is representation learning, which aims to project users and items into a low…

信息检索 · 计算机科学 2021-02-15 Gang Wang , Ziyi Guo , Xiang Li , Dawei Yin , Shuai Ma

Large Language Models (LLMs) have empowered generative recommendation systems through fine-tuning user behavior data. However, utilizing the user data may pose significant privacy risks, potentially leading to ethical dilemmas and…

信息检索 · 计算机科学 2025-02-25 Jujia Zhao , Wenjie Wang , Chen Xu , See-Kiong Ng , Tat-Seng Chua

Although prevailing supervised and self-supervised learning augmented sequential recommendation (SeRec) models have achieved improved performance with powerful neural network architectures, we argue that they still suffer from two…

信息检索 · 计算机科学 2025-02-14 Xinping Zhao , Baotian Hu , Yan Zhong , Shouzheng Huang , Zihao Zheng , Meng Wang , Haofen Wang , Min Zhang

With the rapid development of short video platforms, recommendation systems have become key technologies for improving user experience and enhancing platform engagement. However, while short video recommendation systems leverage multimodal…

信息检索 · 计算机科学 2025-04-15 Haowei Yang , Lei Fu , Qingyi Lu , Yue Fan , Tianle Zhang , Ruohan Wang

Recommender systems play a pivotal role across practical scenarios, showcasing remarkable capabilities in user preference modeling. However, the centralized learning paradigm predominantly used raises serious privacy concerns. The federated…

Federated recommendations leverage the federated learning (FL) techniques to make privacy-preserving recommendations. Though recent success in the federated recommender system, several vital challenges remain to be addressed: (i) The…

信息检索 · 计算机科学 2022-08-25 Sichun Luo , Yuanzhang Xiao , Yang Liu , Congduan Li , Linqi Song

Recommender systems are essential for personalizing digital experiences on e-commerce sites, streaming services, and social media platforms. While these systems are necessary for modern digital interactions, they face fairness, bias,…

信息检索 · 计算机科学 2024-09-20 Falguni Roy , Xiaofeng Ding , K. -K. R. Choo , Pan Zhou

With the rapid growth of the Internet and overwhelming amount of information and choices that people are confronted with, recommender systems have been developed to effectively support users' decision-making process in the online systems.…

信息检索 · 计算机科学 2014-03-05 Wei Zeng , An Zeng , Ming-Sheng Shang , Yi-Cheng Zhang