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This paper addresses the problem of distributed optimization, where a network of agents represented as a directed graph (digraph) aims to collaboratively minimize the sum of their individual cost functions. Existing approaches for…

Optimization and Control · Mathematics 2023-07-06 Xiaomeng Chen , Wei Jiang , Themistoklis Charalambous , Ling Shi

The shuffle model is recently proposed to address the issue of severe utility loss in Local Differential Privacy (LDP) due to distributed data randomization.In the shuffle model, a shuffler is utilized to break the link between the user…

Cryptography and Security · Computer Science 2021-08-03 Xiaochen Li , Weiran Liu , Hanwen Feng , Kunzhe Huang , Jinfei Liu , Kui Ren , Zhan Qin

Contact tracing has been considered as an effective measure to limit the transmission of infectious disease such as COVID-19. Trajectory-based contact tracing compares the trajectories of users with the patients, and allows the tracing of…

Databases · Computer Science 2023-03-07 Maocheng Li , Yuxiang Zeng , Libin Zheng , Lei Chen , Qing Li

Semi-supervised crowd counting is crucial for addressing the high annotation costs of densely populated scenes. Although several methods based on pseudo-labeling have been proposed, it remains challenging to effectively and accurately…

Computer Vision and Pattern Recognition · Computer Science 2025-03-25 Maochen Yang , Zekun Li , Jian Zhang , Lei Qi , Yinghuan Shi

Federated learning (FL), as a type of collaborative machine learning framework, is capable of preserving private data from mobile terminals (MTs) while training the data into useful models. Nevertheless, from a viewpoint of information…

Machine Learning · Computer Science 2021-02-01 Kang Wei , Jun Li , Ming Ding , Chuan Ma , Hang Su , Bo Zhang , H. Vincent Poor

Research on the effects of essential hyperparameters of DP-SGD lacks consensus, verification, and replication. Contradictory and anecdotal statements on their influence make matters worse. While DP-SGD is the standard optimization algorithm…

Machine Learning · Computer Science 2024-11-05 Felix Morsbach , Jan Reubold , Thorsten Strufe

Existing truth inference methods in crowdsourcing aim to map redundant labels and items to the ground truth. They treat the ground truth as hidden variables and use statistical or deep learning-based worker behavior models to infer the…

Artificial Intelligence · Computer Science 2025-03-13 Tao Han , Huaixuan Shi , Xinyi Ding , Xiao Ma , Huamao Gu , Yili Fang

Recent rapid development of sensor technology has allowed massive fine-grained time series (TS) data to be collected and set the foundation for the development of data-driven services and applications. During the process, data sharing is…

Machine Learning · Computer Science 2023-01-06 Li Zhang , Jiahao Ding , Yifeng Gao , Jessica Lin

In this paper, we propose a privacy-enhancing technique leveraging an inherent property of automatic pedestrian detection algorithms, namely, that the training of deep neural network (DNN) based methods is generally performed using curated…

Computer Vision and Pattern Recognition · Computer Science 2025-01-28 Jacob Shams , Ben Nassi , Satoru Koda , Asaf Shabtai , Yuval Elovici

Text-to-image diffusion models have been shown to suffer from sample-level memorization, possibly reproducing near-perfect replica of images that they are trained on, which may be undesirable. To remedy this issue, we develop the first…

Data provision, referring to the data upload and data access, is one key phase in vehicular digital forensics. The unique features of Driverless Taxi (DT) bring new issues to this phase: 1) efficient verification of data integrity when…

Cryptography and Security · Computer Science 2024-09-24 Yanwei Gong , Xiaolin Chang , Jelena Mišić , Vojislav B. Mišić , Junchao Fan , Kaiwen Wang

Nowadays, differential privacy (DP) has become a well-accepted standard for privacy protection, and deep neural networks (DNN) have been immensely successful in machine learning. The combination of these two techniques, i.e., deep learning…

Cryptography and Security · Computer Science 2024-08-02 Jianxin Wei , Ergute Bao , Xiaokui Xiao , Yin Yang

Differential privacy (DP) is a formal notion for quantifying the privacy loss of algorithms. Algorithms in the central model of DP achieve high accuracy but make the strongest trust assumptions whereas those in the local DP model make the…

Cryptography and Security · Computer Science 2021-06-09 Badih Ghazi , Ravi Kumar , Pasin Manurangsi , Rasmus Pagh

In this paper, we focus on developing knowledge distillation (KD) for compact 3D detectors. We observe that off-the-shelf KD methods manifest their efficacy only when the teacher model and student counterpart share similar intermediate…

Computer Vision and Pattern Recognition · Computer Science 2023-08-22 Yanjing Li , Sheng Xu , Mingbao Lin , Jihao Yin , Baochang Zhang , Xianbin Cao

Regarding intelligent transportation systems, low-bitrate transmission via lossy point cloud compression is vital for facilitating real-time collaborative perception among connected agents, such as vehicles and infrastructures, under…

Computer Vision and Pattern Recognition · Computer Science 2026-02-27 Hao Jing , Anhong Wang , Yifan Zhang , Donghan Bu , Junhui Hou

The distillation of ranking models has become an important topic in both academia and industry. In recent years, several advanced methods have been proposed to tackle this problem, often leveraging ranking information from teacher rankers…

Information Retrieval · Computer Science 2023-06-14 Zhen Qin , Rolf Jagerman , Rama Pasumarthi , Honglei Zhuang , He Zhang , Aijun Bai , Kai Hui , Le Yan , Xuanhui Wang

Mobile crowdsensing allows data collection at a scale and pace that was once impossible. One of the biggest challenges in mobile crowdsensing is that participants may exhibit malicious or unreliable behavior. Therefore, it becomes…

Networking and Internet Architecture · Computer Science 2018-05-01 Francesco Restuccia , Pierluca Ferraro , Timothy S. Sanders , Simone Silvestri , Sajal K. Das , Giuseppe Lo Re

Data perturbation-based privacy-preserving methods have been widely adopted in various scenarios due to their efficiency and the elimination of the need for a trusted third party. However, these methods primarily focus on individual…

Cryptography and Security · Computer Science 2025-07-24 Hao Jiang , Quan Zhou , Dongdong Zhao , Shangshang Yang , Wenjian Luo , Xingyi Zhang

Multi-domain fake news detection aims to identify whether various news from different domains is real or fake and has become urgent and important. However, existing methods are dedicated to improving the overall performance of fake news…

Computation and Language · Computer Science 2023-12-05 Jiayang Li , Xuan Feng , Tianlong Gu , Liang Chang

Handling missing data is crucial in machine learning, but many datasets contain gaps due to errors or non-response. Unlike traditional methods such as listwise deletion, which are simple but inadequate, the literature offers more…

Cryptography and Security · Computer Science 2024-05-30 Julia Jentsch , Ali Burak Ünal , Şeyma Selcan Mağara , Mete Akgün
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