Search Results for author: Zhaodi Zhang

Found 5 papers, 1 papers with code

A Tale of Two Approximations: Tightening Over-Approximation for DNN Robustness Verification via Under-Approximation

no code implementations26 May 2023 Zhiyi Xue, Si Liu, Zhaodi Zhang, Yiting Wu, Min Zhang

In this paper, we study existing approaches and identify a dominant factor in defining tight approximation, namely the approximation domain of the activation function.

Boosting Verified Training for Robust Image Classifications via Abstraction

1 code implementation CVPR 2023 Zhaodi Zhang, Zhiyi Xue, Yang Chen, Si Liu, Yueling Zhang, Jing Liu, Min Zhang

Via abstraction, all perturbed images are mapped into intervals before feeding into neural networks for training.

DualApp: Tight Over-Approximation for Neural Network Robustness Verification via Under-Approximation

no code implementations21 Nov 2022 Yiting Wu, Zhaodi Zhang, Zhiyi Xue, Si Liu, Min Zhang

We observe that existing approaches only rely on overestimated domains, while the corresponding tight approximation may not necessarily be tight on its actual domain.

Provably Tightest Linear Approximation for Robustness Verification of Sigmoid-like Neural Networks

no code implementations21 Aug 2022 Zhaodi Zhang, Yiting Wu, Si Liu, Jing Liu, Min Zhang

Considerable efforts have been devoted to finding the so-called tighter approximations to obtain more precise verification results.

Accelerating Robustness Verification of Deep Neural Networks Guided by Target Labels

no code implementations16 Jul 2020 Wenjie Wan, Zhaodi Zhang, Yiwei Zhu, Min Zhang, Fu Song

The key insight of our approach is that the robustness verification problem of DNNs can be solved by verifying sub-problems of DNNs, one per target label.

Autonomous Driving Medical Diagnosis

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