Trustworthy Semantic Knowledge Orchestration for Space-Air-Ground Integrated Edge Computing Using Hierarchical Federated Multi-Agent Deep Reinforcement Learning
: Space-Air-Ground Integrated Networks (SAGIN) are networks that combine the use of satellite, High-Altitude Platform Systems (HAPS), Unmanned Aerial Vehicles (UAVs), terrestrial base stations, and Internet of Things (IoT) devices to enable ubiquitous networking and distributed edge intelligence. Efficient semantic edg...