Search Results for author: Zikang Xiong

Found 8 papers, 2 papers with code

Manipulating Neural Path Planners via Slight Perturbations

no code implementations27 Mar 2024 Zikang Xiong, Suresh Jagannathan

In this paper, we propose a novel approach to specify and inject a range of hidden malicious behaviors, known as backdoors, into neural path planners.

Decision Making

Co-learning Planning and Control Policies Constrained by Differentiable Logic Specifications

no code implementations2 Mar 2023 Zikang Xiong, Daniel Lawson, Joe Eappen, Ahmed H. Qureshi, Suresh Jagannathan

Synthesizing planning and control policies in robotics is a fundamental task, further complicated by factors such as complex logic specifications and high-dimensional robot dynamics.

Hierarchical Reinforcement Learning reinforcement-learning +2

Defending Observation Attacks in Deep Reinforcement Learning via Detection and Denoising

1 code implementation14 Jun 2022 Zikang Xiong, Joe Eappen, He Zhu, Suresh Jagannathan

We focus our attention on well-trained deterministic and stochastic neural network policies in the context of continuous control benchmarks subject to four well-studied observation space adversarial attacks.

Continuous Control Denoising +2

Model-free Neural Lyapunov Control for Safe Robot Navigation

1 code implementation2 Mar 2022 Zikang Xiong, Joe Eappen, Ahmed H. Qureshi, Suresh Jagannathan

Model-free Deep Reinforcement Learning (DRL) controllers have demonstrated promising results on various challenging non-linear control tasks.

Robot Navigation

Scalable Synthesis of Verified Controllers in Deep Reinforcement Learning

no code implementations20 Apr 2021 Zikang Xiong, Suresh Jagannathan

There has been significant recent interest in devising verification techniques for learning-enabled controllers (LECs) that manage safety-critical systems.

reinforcement-learning Reinforcement Learning (RL)

Batch Sequential Adaptive Designs for Global Optimization

no code implementations21 Oct 2020 Jianhui Ning, Yao Xiao, Zikang Xiong

The computation burden of the new method is much lighter, and the points clustering is also avoided.

Clustering

Robustness to Adversarial Attacks in Learning-Enabled Controllers

no code implementations11 Jun 2020 Zikang Xiong, Joe Eappen, He Zhu, Suresh Jagannathan

We consider shield-based defenses as a means to improve controller robustness in the face of such perturbations.

Continuous Control

An Inductive Synthesis Framework for Verifiable Reinforcement Learning

no code implementations16 Jul 2019 He Zhu, Zikang Xiong, Stephen Magill, Suresh Jagannathan

Rather than enforcing safety by examining and altering the structure of a complex neural network implementation, our technique uses blackbox methods to synthesizes deterministic programs, simpler, more interpretable, approximations of the network that can nonetheless guarantee desired safety properties are preserved, even when the network is deployed in unanticipated or previously unobserved environments.

BIG-bench Machine Learning reinforcement-learning +1

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