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Guanhua Zhang

10 accepted papers

2024

Advancing the Robustness of Large Language Models through Self-Denoised Smoothing

NAACL 2024short

Although large language models (LLMs) have achieved significant success, their vulnerability to adversarial perturbations, including recent jailbreak attacks, has raised considerable concerns. However, the increasing size of these models and their limited access make improving their robustness a cha…

2023

Robust Mixture-of-Expert Training for Convolutional Neural Networks

ICCV 2023oral

Sparsely-gated Mixture of Expert (MoE), an emerging deep model architecture, has demonstrated a great promise to enable high-accuracy and ultra-efficient model inference. Despite the growing popularity of MoE, little work investigated its potential to advance convolutional neural networks (CNNs), es…

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2023

TextGrad: Advancing Robustness Evaluation in NLP by Gradient-Driven Optimization

ICLR 2023poster

Robustness evaluation against adversarial examples has become increasingly important to unveil the trustworthiness of the prevailing deep models in natural language processing (NLP). However, in contrast to the computer vision domain where the first-order projected gradient descent (PGD) is used as…

2023

Towards Coherent Image Inpainting Using Denoising Diffusion Implicit Models

ICML 2023poster

Image inpainting refers to the task of generating a complete, natural image based on a partially revealed reference image. Recently, many research interests have been focused on addressing this problem using fixed diffusion models. These approaches typically directly replace the revealed region of t…

2022

Revisiting and Advancing Fast Adversarial Training Through The Lens of Bi-Level Optimization

ICML 2022spotlight

Adversarial training (AT) is a widely recognized defense mechanism to gain the robustness of deep neural networks against adversarial attacks. It is built on min-max optimization (MMO), where the minimizer (i.e., defender) seeks a robust model to minimize the worst-case training loss in the presence…