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Qizhang Li

11 accepted papers

2026

DualOptim+: Bridging Shared and Decoupled Optimizer States for Better Machine Unlearning in Large Language Models

ICML 2026poster

We propose **DualOptim+**, a novel optimization framework for improving machine unlearning in large language models. It introduces a base state to capture common representations shared by forgetting and retaining objectives and delta states to preserve objective-specific residuals. This architecture…

Cited by 0SourceScholar
2025

Triad: Empowering LMM-based Anomaly Detection with Expert-guided Region-of-Interest Tokenizer and Manufacturing Process

ICCV 2025poster

Although recent methods have tried to introduce large multimodal models (LMMs) into industrial anomaly detection (IAD), their generalization in the IAD field is far inferior to that for general purposes. We summarize the main reasons for this gap into two aspects. On one hand, general-purpose LMMs l…

2024

Improved Generation of Adversarial Examples Against Safety-aligned LLMs

NeurIPS 2024poster

Adversarial prompts (or say, adversarial examples) generated using gradient-based methods exhibit outstanding performance in performing automatic jailbreak attacks against safety-aligned LLMs. Nevertheless, due to the discrete nature of texts, the input gradient of LLMs struggles to precisely reflec…

2023

Improving Adversarial Transferability via Intermediate-level Perturbation Decay

NeurIPS 2023poster

Intermediate-level attacks that attempt to perturb feature representations following an adversarial direction drastically have shown favorable performance in crafting transferable adversarial examples. Existing methods in this category are normally formulated with two separate stages, where a direct…

2023

Making Substitute Models More Bayesian Can Enhance Transferability of Adversarial Examples

ICLR 2023poster

The transferability of adversarial examples across deep neural networks (DNNs) is the crux of many black-box attacks. Many prior efforts have been devoted to improving the transferability via increasing the diversity in inputs of some substitute models. In this paper, by contrast, we opt for the div…

2023

Towards Evaluating Transfer-based Attacks Systematically, Practically, and Fairly

NeurIPS 2023poster

The adversarial vulnerability of deep neural networks (DNNs) has drawn great attention due to the security risk of applying these models in real-world applications. Based on transferability of adversarial examples, an increasing number of transfer-based methods have been developed to fool black-box…

Cited by 3SourcePDFScholar
2022

Adversarial Contrastive Learning via Asymmetric InfoNCE

ECCV 2022poster

"Contrastive learning (CL) has recently been applied to adversarial learning tasks. Such practice considers adversarial perturbations as additional positive samples of an instance, and by maximizing their agreements with each other, yields better adversarial robustness. However, this mechanism can b…

2020

Backpropagating Linearly Improves Transferability of Adversarial Examples

NeurIPS 2020poster

The vulnerability of deep neural networks (DNNs) to adversarial examples has drawn great attention from the community. In this paper, we study the transferability of such examples, which lays the foundation of many black-box attacks on DNNs. We revisit a not so new but definitely noteworthy hypothes…