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The theory of boosting provides a computational framework for aggregating approximate weak learning algorithms, which perform marginally better than a random predictor, into an accurate strong learner. In the realizable case, the success of…

机器学习 · 计算机科学 2024-11-01 Udaya Ghai , Karan Singh

Randomized smoothing is a defensive technique to achieve enhanced robustness against adversarial examples which are small input perturbations that degrade the performance of neural network models. Conventional randomized smoothing adds…

机器学习 · 计算机科学 2024-07-17 Ryo Hase , Ye Wang , Toshiaki Koike-Akino , Jing Liu , Kieran Parsons

Currently the most popular method of providing robustness certificates is randomized smoothing where an input is smoothed via some probability distribution. We propose a novel approach to randomized smoothing over multiplicative parameters.…

机器学习 · 计算机科学 2022-08-17 Nikita Muravev , Aleksandr Petiushko

Randomized smoothing is a recent and celebrated solution to certify the robustness of any classifier. While it indeed provides a theoretical robustness against adversarial attacks, the dimensionality of current classifiers necessarily…

密码学与安全 · 计算机科学 2022-05-02 Thibault Maho , Teddy Furon , Erwan Le Merrer

The robustness of image segmentation has been an important research topic in the past few years as segmentation models have reached production-level accuracy. However, like classification models, segmentation models can be vulnerable to…

计算机视觉与模式识别 · 计算机科学 2023-06-19 Othmane Laousy , Alexandre Araujo , Guillaume Chassagnon , Marie-Pierre Revel , Siddharth Garg , Farshad Khorrami , Maria Vakalopoulou

Large-scale pre-trained language models have shown outstanding performance in a variety of NLP tasks. However, they are also known to be significantly brittle against specifically crafted adversarial examples, leading to increasing interest…

计算与语言 · 计算机科学 2023-05-12 Han Cheol Moon , Shafiq Joty , Ruochen Zhao , Megh Thakkar , Xu Chi

Conducting pairwise comparisons is a widely used approach in curating human perceptual preference data. Typically raters are instructed to make their choices according to a specific set of rules that address certain dimensions of image…

计算机视觉与模式识别 · 计算机科学 2020-11-24 Hossein Talebi , Ehsan Amid , Peyman Milanfar , Manfred K. Warmuth

As a certified defensive technique, randomized smoothing has received considerable attention due to its scalability to large datasets and neural networks. However, several important questions remain unanswered, such as (i) whether the…

机器学习 · 计算机科学 2020-06-09 Tianhang Zheng , Di Wang , Baochun Li , Jinhui Xu

Sparse Representation (SR) techniques encode the test samples into a sparse linear combination of all training samples and then classify the test samples into the class with the minimum residual. The classification of SR techniques depends…

计算机视觉与模式识别 · 计算机科学 2019-07-01 Chun-Mei Feng , Yong Xu , Zuoyong Li , Jian Yang

While Automatic Speech Recognition has been shown to be vulnerable to adversarial attacks, defenses against these attacks are still lagging. Existing, naive defenses can be partially broken with an adaptive attack. In classification tasks,…

计算与语言 · 计算机科学 2022-01-12 Raphael Olivier , Bhiksha Raj

Machine learning models have demonstrated remarkable success across diverse domains but remain vulnerable to adversarial attacks. Empirical defense mechanisms often fail, as new attacks constantly emerge, rendering existing defenses…

机器学习 · 计算机科学 2024-10-25 Anupriya Kumari , Devansh Bhardwaj , Sukrit Jindal

Neural network ensembles, such as Bayesian neural networks (BNNs), have shown success in the areas of uncertainty estimation and robustness. However, a crucial challenge prohibits their use in practice. BNNs require a large number of…

机器学习 · 计算机科学 2022-07-15 Namuk Park , Songkuk Kim

Ensemble Learning methods combine multiple algorithms performing the same task to build a group with superior quality. These systems are well adapted to the distributed setup, where each peer or machine of the network hosts one algorithm…

机器学习 · 计算机科学 2021-10-19 Gaëlle Candel , David Naccache

Sound event detection (SED), as a core module of acoustic environmental analysis, suffers from the problem of data deficiency. The integration of semi-supervised learning (SSL) largely mitigates such problem while bringing no extra…

音频与语音处理 · 电气工程与系统科学 2024-01-01 Nian Shao , Erfan Loweimi , Xiaofei Li

Improving and guaranteeing the robustness of deep learning models has been a topic of intense research. Ensembling, which combines several classifiers to provide a better model, has shown to be beneficial for generalisation, uncertainty…

机器学习 · 计算机科学 2023-04-26 Aleksandar Petrov , Francisco Eiras , Amartya Sanyal , Philip H. S. Torr , Adel Bibi

Consistency regularization (CR), which enforces agreement between model predictions on augmented views, has found recent benefits in automatic speech recognition [1]. In this paper, we propose the use of consistency regularization for audio…

声音 · 计算机科学 2025-09-15 Shanmuka Sadhu , Weiran Wang

We present a new certification method for image and point cloud segmentation based on randomized smoothing. The method leverages a novel scalable algorithm for prediction and certification that correctly accounts for multiple testing,…

机器学习 · 计算机科学 2022-07-28 Marc Fischer , Maximilian Baader , Martin Vechev

Traditionally, stochastic approximation schemes for SVIs have relied on strong monotonicity and Lipschitzian properties of the underlying map. In contrast, we consider monotone stochastic variational inequality (SVI) problems where the…

最优化与控制 · 数学 2016-01-06 Farzad Yousefian , Angelia Nedić , Uday V. Shanbhag

Deep Neural Network (DNN) based classifiers have recently been used for the modulation classification of RF signals. These classifiers have shown impressive performance gains relative to conventional methods, however, they are vulnerable to…

机器学习 · 计算机科学 2024-10-10 Wenhan Zhang , Meiyu Zhong , Ravi Tandon , Marwan Krunz

Recently smoothing deep neural network based classifiers via isotropic Gaussian perturbation is shown to be an effective and scalable way to provide state-of-the-art probabilistic robustness guarantee against $\ell_2$ norm bounded…

机器学习 · 统计学 2020-02-19 Huijie Feng , Chunpeng Wu , Guoyang Chen , Weifeng Zhang , Yang Ning