Search Results for author: Youqi Li

Found 5 papers, 2 papers with code

Faster Stochastic Variance Reduction Methods for Compositional MiniMax Optimization

no code implementations18 Aug 2023 Jin Liu, Xiaokang Pan, Junwen Duan, Hongdong Li, Youqi Li, Zhe Qu

All the proposed complexities indicate that our proposed methods can match lower bounds to existing minimax optimizations, without requiring a large batch size in each iteration.

Stochastic Optimization

Multi-source adversarial transfer learning based on similar source domains with local features

no code implementations30 May 2023 Yifu Zhang, Hongru Li, Shimeng Shi, Youqi Li, Jiansong Zhang

In order to ensure that the data from the target domain in different sub-networks in the same batch is exactly the same, we designed a multi-source domain independent strategy to provide the possibility for later local feature fusion to complete the key features required.

Image Segmentation Semantic Segmentation +1

A Certified Radius-Guided Attack Framework to Image Segmentation Models

1 code implementation5 Apr 2023 Wenjie Qu, Youqi Li, Binghui Wang

We are the first, from the attacker perspective, to leverage the properties of certified radius and propose a certified radius guided attack framework against image segmentation models.

Image Classification Image Segmentation +2

Bandits for Structure Perturbation-based Black-box Attacks to Graph Neural Networks with Theoretical Guarantees

1 code implementation CVPR 2022 Binghui Wang, Youqi Li, Pan Zhou

We then propose an online attack based on bandit optimization which is proven to be {sublinear} to the query number $T$, i. e., $\mathcal{O}(\sqrt{N}T^{3/4})$ where $N$ is the number of nodes in the graph.

Graph Classification Node Classification

Bandits for Black-box Attacks to Graph Neural Networks with Structure Perturbation

no code implementations29 Sep 2021 Binghui Wang, Youqi Li, Pan Zhou

However, many recent works have demonstrated that an attacker can mislead GNN models by slightly perturbing the graph structure.

Graph Classification Node Classification

Cannot find the paper you are looking for? You can Submit a new open access paper.