Search Results for author: Guofei Gu

Found 2 papers, 0 papers with code

ExAD: An Ensemble Approach for Explanation-based Adversarial Detection

no code implementations22 Mar 2021 Raj Vardhan, Ninghao Liu, Phakpoom Chinprutthiwong, Weijie Fu, Zhenyu Hu, Xia Ben Hu, Guofei Gu

Several defense methods have been proposed against adversarial attacks to detect adversarial examples at test time or to make machine learning models more robust.

BIG-bench Machine Learning

Practical Speech Re-use Prevention in Voice-driven Services

no code implementations12 Jan 2021 Yangyong Zhang, Maliheh Shirvanian, Sunpreet S. Arora, Jianwei Huang, Guofei Gu

We present AEOLUS, a security overlay that proactively embeds a dynamic acoustic nonce at the time of user interaction, and detects the presence of the embedded nonce in the recorded speech to ensure freshness.

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