A federated learning differential privacy algorithm for non-Gaussian heterogeneous data

Abstract

Multi-center heterogeneous data are a hot topic in federated learning. The data of clients and centers do not follow a normal distribution, posing significant challenges to learning. Based on the assumption that the client data have a multivariate skewed normal distribution, we improve the DP-Fed-mv-PPCA model. We use a Bayesian framework to construct prior distributions of local parameters and use expectation maximization and pseudo-Newton algorithms to obtain robust parameter estimates. Then, the clipping algorithm and differential privacy algorithm are used to solve the problem in which the model parameters do not have a display solution and achieve privacy guarantee. Furthermore, we verified the effectiveness of our model using synthetic and actual data from the Internet of vehicles.

Spatio-Temporal Fusion and Machine Vision Algorithms, Metaverse-based Industrial Services, and Computational Intelligence and Operational Modeling Tools in Simulated 3D Extended Reality Environments

“…The quality of academic articles was determined and risk of bias was measured by MMAT, that tested content validity and usability of selected studies in terms of screening questions, type of design, corresponding quality criteria, and overall quality score. Multi-machine cooperation and visual imagery tools, biometric and behavioral data, and cognitive decision-making and machine learning-based recognition algorithms (Chang et al, 2022;Leng et al, 2022;Yang and Wu, 2023) Ontology-based semantic and 3D modeling technologies, movement and behavior tracking tools, and image processing computational and geolocation data processing algorithms (Jagatheesaperumal and Rahouti, 2022;Kaarlela et al, 2023;Tlili et al, 2023) enable immersive 3D worlds and the industrial metaverse. Immersive virtual reality experiences can be attained in a blockchain-based virtual world through performance capture and digital twinning technologies, data modeling and multi-machine cooperation tools, and predictive modeling and natural language processing algorithms.…”

Immersive Visualization and Multi-Sensor Fusion Systems, Process Simulation and Modeling Technologies, and Digital Twin Connected Factories and Virtual Plant Floor Networks in the Industrial Metaverse

“…Augmented reality-powered immersive spaces integrate metaverse engagement metrics, 3D holographic avatars, and environment perception sensors. 3D immersive environments and the industrial metaverse (Koohang et al, 2023;Yang and Wu, 2023;Zeng et al, 2023) develop on socially-oriented location tracking and artificial intelligence-powered prediction tools, realtime visual analytics and automated perception systems, and ambient sound recognition software. Smart manufacturing operations management can be configured through edge intelligence and computing blockchains, collaborative data analysis tools, industrial data semantics, extended reality technologies, and real and synthetic data.…”

Metaverse-based Industrial Services, Ambient Intelligence and Simulation Modeling Tools, and Brain-inspired Cognitive and Empathetic Computing Systems across 3D Digital Twin Factories

“…Visual perception and machine learning-based image recognition tools, environment perception and 3D digital twin modeling technologies, and distributed decision and control algorithms (Jagatheesaperumal and Rahouti, 2022;Magalhães et al, 2022;Wan et al, 2022;Yang and Wu, 2023) are instrumental in the industrial metaverse and in extended reality environments.…”

“…(Table 4) Table 4 Synopsis of evidence as regards focus topics and descriptive outcomes (research findings) Visual perception and machine learning-based image recognition tools, environment perception and 3D digital twin modeling technologies, and distributed decision and control algorithms are instrumental in the industrial metaverse. Jagatheesaperumal and Rahouti, 2022;Magalhães et al, 2022;Wan et al, 2022;Yang and Wu, 2023 Location intelligence data, 3D object recognition and holographic imaging technologies, and multiscale spatial data processing and digital twin modeling tools further 3D virtual environments and the industrial metaverse. Kaarlela et al, 2023;Leng et al, 2022;Wang et al, 2022 The blockchain-based virtual economy and the industrial metaverse develop on Internet of Things sensing infrastructures, artificial vision and immersive visualization systems, and machine learning and deep generative modeling techniques.…”

“…Visual perception and machine learning-based image recognition tools, environment perception and 3D digital twin modeling technologies, and distributed decision and control algorithms are instrumental in the industrial metaverse Jagatheesaperumal and Rahouti, 2022;Magalhães et al, 2022;Wan et al, 2022;Yang and Wu, 2023. Location intelligence data, 3D object recognition and holographic imaging technologies, and multiscale spatial data processing and digital twin modeling tools further 3D virtual environments and the industrial metaverse Kaarlela et al, 2023;Leng et al, 2022;Wang et al, 2022.…”