Search Results for author: Chaojian Yu

Found 7 papers, 5 papers with code

Eliminating Catastrophic Overfitting Via Abnormal Adversarial Examples Regularization

2 code implementations NeurIPS 2023 Runqi Lin, Chaojian Yu, Tongliang Liu

Specifically, we design a novel method, termed Abnormal Adversarial Examples Regularization (AAER), which explicitly regularizes the variation of AAEs to hinder the classifier from becoming distorted.

Adversarial Robustness

On the Over-Memorization During Natural, Robust and Catastrophic Overfitting

1 code implementation13 Oct 2023 Runqi Lin, Chaojian Yu, Bo Han, Tongliang Liu

In this work, we adopt a unified perspective by solely focusing on natural patterns to explore different types of overfitting.

Memorization

On the Onset of Robust Overfitting in Adversarial Training

no code implementations1 Oct 2023 Chaojian Yu, Xiaolong Shi, Jun Yu, Bo Han, Tongliang Liu

Adversarial Training (AT) is a widely-used algorithm for building robust neural networks, but it suffers from the issue of robust overfitting, the fundamental mechanism of which remains unclear.

Adversarial Robustness Data Augmentation

Strength-Adaptive Adversarial Training

no code implementations4 Oct 2022 Chaojian Yu, Dawei Zhou, Li Shen, Jun Yu, Bo Han, Mingming Gong, Nannan Wang, Tongliang Liu

Firstly, applying a pre-specified perturbation budget on networks of various model capacities will yield divergent degree of robustness disparity between natural and robust accuracies, which deviates from robust network's desideratum.

Adversarial Robustness Scheduling

Understanding Robust Overfitting of Adversarial Training and Beyond

1 code implementation17 Jun 2022 Chaojian Yu, Bo Han, Li Shen, Jun Yu, Chen Gong, Mingming Gong, Tongliang Liu

Here, we explore the causes of robust overfitting by comparing the data distribution of \emph{non-overfit} (weak adversary) and \emph{overfitted} (strong adversary) adversarial training, and observe that the distribution of the adversarial data generated by weak adversary mainly contain small-loss data.

Adversarial Robustness Data Ablation

Robust Weight Perturbation for Adversarial Training

1 code implementation30 May 2022 Chaojian Yu, Bo Han, Mingming Gong, Li Shen, Shiming Ge, Bo Du, Tongliang Liu

Based on these observations, we propose a robust perturbation strategy to constrain the extent of weight perturbation.

Classification

Hierarchical Bilinear Pooling for Fine-Grained Visual Recognition

2 code implementations ECCV 2018 Chaojian Yu, Xinyi Zhao, Qi Zheng, Peng Zhang, Xinge You

Fine-grained visual recognition is challenging because it highly relies on the modeling of various semantic parts and fine-grained feature learning.

Fine-Grained Visual Recognition

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