collaborators

6 papers

cs.RO2026

CodeGraphVLP: Code-as-Planner Meets Semantic-Graph State for Non-Markovian Vision-Language-Action Models

Khoa Vo, Sieu Tran, Taisei Hanyu +8

Vision-Language-Action (VLA) models promise generalist robot manipulation, but are typically trained and deployed as short-horizon policies that assume the latest observation is su…

cs.AI2026

From Refusal to Recovery: A Control-Theoretic Approach to Generative AI Guardrails

Ravi Pandya, Madison Bland, Duy P. Nguyen +3

Generative AI systems are increasingly assisting and acting on behalf of end users in practical settings, from digital shopping assistants to next-generation autonomous cars. In th…

eess.SY2026

Synthesis and Deployment of Maximal Robust Control Barrier Functions through Adversarial Reinforcement Learning

Donggeon David Oh, Duy P. Nguyen, Haimin Hu +1

Robust control barrier functions (CBFs) provide a principled mechanism for smooth safety enforcement under worst-case disturbances. However, existing approaches typically rely on e…

cs.LG2026

Provably Optimal Reinforcement Learning under Safety Filtering

Donggeon David Oh, Duy P. Nguyen, Haimin Hu +1

Recent advances in reinforcement learning (RL) enable its use on increasingly complex tasks, but the lack of formal safety guarantees still limits its application in safety-critica…

cs.RO2025

MAGICS: Adversarial RL with Minimax Actors Guided by Implicit Critic Stackelberg for Convergent Neural Synthesis of Robot Safety

Justin Wang, Haimin Hu, Duy Phuong Nguyen +1

While robust optimal control theory provides a rigorous framework to compute robot control policies that are provably safe, it struggles to scale to high-dimensional problems, lead…

cs.RO2025

Gameplay Filters: Robust Zero-Shot Safety through Adversarial Imagination

Duy P. Nguyen, Kai-Chieh Hsu, Wenhao Yu +2

Despite the impressive recent advances in learning-based robot control, ensuring robustness to out-of-distribution conditions remains an open challenge. Safety filters can, in prin…