This book constitutes the refereed post-conference proceedings of 4th International Symposium on Intelligent Unmanned Systems and Artificial Intelligence, SIUSAI 2025, in Hohhot, China, during August 15-17, 2025.
The 37 full papers presented in this volume were carefully reviewed and selected from 99 submissions. The papers are organized in the following topical sections: Perception and Scene Understanding for Intelligent Unmanned System; AI-Driven Control, Planning and Decision-Making; Predictive Modeling and Data Intelligence for Autonomous Operations.
