Hyunjong Choi

University of California, Riverside, San Diego State University

Papers

Total Citations

113

H-Index

About

Hyunjong Choi is a leading researcher in real-time and safety-critical robotic systems, with a primary focus on enhancing the timing predictability of the Robot Operating System (ROS 2). His major contributions center on developing priority-driven scheduling and chain-aware management mechanisms to address the inherent timing unpredictability in ROS 2’s multi-threaded executors. Choi’s seminal work, “PiCAS: New Design of Priority-Driven Chain-Aware Scheduling for ROS2” (2021), has garnered 80 citations, establishing a foundational approach for ensuring deterministic execution of callback chains with data dependencies. He further advanced this field with “Timing Analysis and Priority-driven Enhancements of ROS 2 Multi-threaded Executors” (2023, 28 citations), providing rigorous timing analysis and practical scheduling improvements. His most recent framework, “PAAM: A Framework for Coordinated and Priority-Driven Accelerator Management in ROS 2” (2024), extends these principles to manage hardware accelerators predictably in multi-process robotic applications. Choi’s work is pivotal for deploying ROS 2 in autonomous vehicles, industrial robotics, and other domains where timing correctness is critical to safety and reliability.