Hengzhi Pei

Improving Certified Robustness via Statistical Learning with Logical Reasoning

2020 · arXiv (Cornell University)

Intensive algorithmic efforts have been made to enable the rapid improvements of certificated robustness for complex ML models recently. However, current robustness certification methods are only able to certify under a limited perturbation radius. Given …

T3: Tree-Autoencoder Constrained Adversarial Text Generation for Targeted Attack

2019 · arXiv (Cornell University)

Adversarial attacks against natural language processing systems, which perform seemingly innocuous modifications to inputs, can induce arbitrary mistakes to the target models. Though raised great concerns, such adversarial attacks can be leveraged to estimate the …