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Zhizhen Qin

5 accepted papers

2025

Estimating Control Barriers from Offline Data

ICRA 2025

Learning-based methods for constructing control barrier functions (CBFs) are gaining popularity for ensuring safe robot control. A major limitation of existing methods is their reliance on extensive sampling over the state space or online system interaction in simulation. In this work we propose a n

Cited by 6SourceScholar
2024

SEEV: Synthesis with Efficient Exact Verification for ReLU Neural Barrier Functions

NeurIPS 2024poster

Neural Control Barrier Functions (NCBFs) have shown significant promise in enforcing safety constraints on nonlinear autonomous systems. State-of-the-art exact approaches to verifying safety of NCBF-based controllers exploit the piecewise-linear structure of ReLU neural networks, however, such appro…

2022

Policy Optimization with Advantage Regularization for Long-Term Fairness in Decision Systems

NeurIPS 2022accept

Long-term fairness is an important factor of consideration in designing and deploying learning-based decision systems in high-stake decision-making contexts. Recent work has proposed the use of Markov Decision Processes (MDPs) to formulate decision-making with long-term fairness requirements in dyna…

2022

Quantifying Safety of Learning-based Self-Driving Control Using Almost-Barrier Functions

IROS 2022poster

Path-tracking control of self-driving vehicles can benefit from deep learning for tackling longstanding challenges such as nonlinearity and uncertainty. However, deep neural controllers lack safety guarantees, restricting their practical use. We propose a new approach of learning almost-barrier func…

Cited by 14SourceScholar