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Motivated by bridging the simulation to reality gap in the context of safety-critical systems, we consider learning adversarially robust stability certificates for unknown nonlinear dynamical systems. In line with approaches from robust…

机器学习 · 计算机科学 2021-12-21 Thomas T. C. K. Zhang , Stephen Tu , Nicholas M. Boffi , Jean-Jacques E. Slotine , Nikolai Matni

Randomized smoothing is a recent technique that achieves state-of-art performance in training certifiably robust deep neural networks. While the smoothing family of distributions is often connected to the choice of the norm used for…

机器学习 · 计算机科学 2022-07-06 Motasem Alfarra , Adel Bibi , Philip H. S. Torr , Bernard Ghanem

Smoothed analysis is a powerful paradigm in overcoming worst-case intractability in unsupervised learning and high-dimensional data analysis. While polynomial time smoothed analysis guarantees have been obtained for worst-case intractable…

数据结构与算法 · 计算机科学 2019-04-25 Aditya Bhaskara , Aidao Chen , Aidan Perreault , Aravindan Vijayaraghavan

Vision-Language Models (VLMs) can perform zero-shot classification but are susceptible to adversarial attacks. While robust fine-tuning improves their robustness, existing approaches align fixed text embeddings with an image embedding,…

计算机视觉与模式识别 · 计算机科学 2026-04-22 Junhao Dong , Yifei Zhang , Hao Zhu , Yew-Soon Ong , Piotr Koniusz

In this paper, we propose a new key-based defense focusing on both efficiency and robustness. Although the previous key-based defense seems effective in defending against adversarial examples, carefully designed adaptive attacks can bypass…

计算机视觉与模式识别 · 计算机科学 2023-09-06 AprilPyone MaungMaung , Isao Echizen , Hitoshi Kiya

Metric learning aims to build a distance metric typically by learning an effective embedding function that maps similar objects into nearby points in its embedding space. Despite recent advances in deep metric learning, it remains…

计算机视觉与模式识别 · 计算机科学 2022-11-15 Deunsol Jung , Dahyun Kang , Suha Kwak , Minsu Cho

In this work we study input gradient regularization of deep neural networks, and demonstrate that such regularization leads to generalization proofs and improved adversarial robustness. The proof of generalization does not overcome the…

机器学习 · 计算机科学 2019-09-13 Chris Finlay , Jeff Calder , Bilal Abbasi , Adam Oberman

Randomized smoothing has recently attracted attentions in the field of adversarial robustness to provide provable robustness guarantees on smoothed neural network classifiers. However, existing works show that vanilla randomized smoothing…

机器学习 · 计算机科学 2023-10-13 Linbo Liu , Trong Nghia Hoang , Lam M. Nguyen , Tsui-Wei Weng

We develop new techniques for proving lower bounds on the least singular value of random matrices with limited randomness. The matrices we consider have entries that are given by polynomials of a few underlying base random variables. This…

数据结构与算法 · 计算机科学 2025-09-29 Aditya Bhaskara , Eric Evert , Vaidehi Srinivas , Aravindan Vijayaraghavan

Randomized Smoothing (RS) is a promising technique for certified robustness, and recently in RS the ensemble of multiple Deep Neural Networks (DNNs) has shown state-of-the-art performances due to its variance reduction effect over Gaussian…

机器学习 · 计算机科学 2025-04-14 Kun Fang , Qinghua Tao , Yingwen Wu , Tao Li , Xiaolin Huang , Jie Yang

The task of few-shot GAN adaptation aims to adapt a pre-trained GAN model to a small dataset with very few training images. While existing methods perform well when the dataset for pre-training is structurally similar to the target dataset,…

计算机视觉与模式识别 · 计算机科学 2023-08-21 Vadim Sushko , Ruyu Wang , Juergen Gall

Randomized Smoothing (RS) is a promising method for obtaining robustness certificates by evaluating a base model under noise. In this work, we: (i) theoretically motivate why ensembles are a particularly suitable choice as base models for…

机器学习 · 计算机科学 2022-03-31 Miklós Z. Horváth , Mark Niklas Müller , Marc Fischer , Martin Vechev

While autoregressive models excel at image compression, their sample quality is often lacking. Although not realistic, generated images often have high likelihood according to the model, resembling the case of adversarial examples. Inspired…

机器学习 · 计算机科学 2021-03-30 Chenlin Meng , Jiaming Song , Yang Song , Shengjia Zhao , Stefano Ermon

In the last couple of years, several adversarial attack methods based on different threat models have been proposed for the image classification problem. Most existing defenses consider additive threat models in which sample perturbations…

机器学习 · 计算机科学 2019-10-25 Alexander Levine , Soheil Feizi

Few-shot learning is the process of learning novel classes using only a few examples and it remains a challenging task in machine learning. Many sophisticated few-shot learning algorithms have been proposed based on the notion that networks…

机器学习 · 计算机科学 2019-10-04 Akihiro Nakamura , Tatsuya Harada

Recently it has been shown that state-of-the-art NLP models are vulnerable to adversarial attacks, where the predictions of a model can be drastically altered by slight modifications to the input (such as synonym substitutions). While…

计算与语言 · 计算机科学 2023-07-13 Yahan Yang , Soham Dan , Dan Roth , Insup Lee

Few-shot learning is often motivated by the ability of humans to learn new tasks from few examples. However, standard few-shot classification benchmarks assume that the representation is learned on a limited amount of base class data,…

计算机视觉与模式识别 · 计算机科学 2020-02-19 Yann Lifchitz , Yannis Avrithis , Sylvaine Picard

Randomized smoothing (RS) has successfully been used to improve the robustness of predictions for deep neural networks (DNNs) by adding random noise to create multiple variations of an input, followed by deciding the consensus. To…

机器学习 · 计算机科学 2024-04-29 Emmanouil Seferis , Stefanos Kollias , Chih-Hong Cheng

Deep Networks have been shown to provide state-of-the-art performance in many machine learning challenges. Unfortunately, they are susceptible to various types of noise, including adversarial attacks and corrupted inputs. In this work we…

机器学习 · 计算机科学 2019-09-12 Carlos Lassance , Vincent Gripon , Jian Tang , Antonio Ortega

The LLM unlearning technique has recently been introduced to comply with data regulations and address the safety and ethical concerns of LLMs by removing the undesired data-model influence. However, state-of-the-art unlearning methods face…

机器学习 · 计算机科学 2025-05-28 Chongyu Fan , Jinghan Jia , Yihua Zhang , Anil Ramakrishna , Mingyi Hong , Sijia Liu