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In this work we propose lifted regression/reconstruction networks (LRRNs), which combine lifted neural networks with a guaranteed Lipschitz continuity property for the output layer. Lifted neural networks explicitly optimize an energy model…

机器学习 · 计算机科学 2020-05-08 Rasmus Kjær Høier , Christopher Zach

This note shows that, for a fixed Lipschitz constant $L > 0$, one layer neural networks that are $L$-Lipschitz are dense in the set of all $L$-Lipschitz functions with respect to the uniform norm on bounded sets.

机器学习 · 统计学 2020-09-30 Stephan Eckstein

To improve the robustness of deep classifiers against adversarial perturbations, many approaches have been proposed, such as designing new architectures with better robustness properties (e.g., Lipschitz-capped networks), or modifying the…

机器学习 · 计算机科学 2025-03-27 Mahyar Fazlyab , Taha Entesari , Aniket Roy , Rama Chellappa

Lipschitz constraints under L2 norm on deep neural networks are useful for provable adversarial robustness bounds, stable training, and Wasserstein distance estimation. While heuristic approaches such as the gradient penalty have seen much…

机器学习 · 计算机科学 2019-11-12 Qiyang Li , Saminul Haque , Cem Anil , James Lucas , Roger Grosse , Jörn-Henrik Jacobsen

Fast and precise Lipschitz constant estimation of neural networks is an important task for deep learning. Researchers have recently found an intrinsic trade-off between the accuracy and smoothness of neural networks, so training a network…

机器学习 · 计算机科学 2022-10-12 Zi Wang , Gautam Prakriya , Somesh Jha

To improve performance in contemporary deep learning, one is interested in scaling up the neural network in terms of both the number and the size of the layers. When ramping up the width of a single layer, graceful scaling of training has…

机器学习 · 计算机科学 2024-05-24 Tim Large , Yang Liu , Minyoung Huh , Hyojin Bahng , Phillip Isola , Jeremy Bernstein

Despite significant advances, deep networks remain highly susceptible to adversarial attack. One fundamental challenge is that small input perturbations can often produce large movements in the network's final-layer feature space. In this…

机器学习 · 计算机科学 2023-04-20 Maria-Florina Balcan , Avrim Blum , Dravyansh Sharma , Hongyang Zhang

Lipschitz constrained networks have gathered considerable attention in the deep learning community, with usages ranging from Wasserstein distance estimation to the training of certifiably robust classifiers. However they remain commonly…

Recent advances in adversarial attacks and Wasserstein GANs have advocated for use of neural networks with restricted Lipschitz constants. Motivated by these observations, we study the recently introduced GroupSort neural networks, with…

机器学习 · 统计学 2021-02-09 Ugo Tanielian , Maxime Sangnier , Gerard Biau

Lipschitz Bound Estimation is an effective method of regularizing deep neural networks to make them robust against adversarial attacks. This is useful in a variety of applications ranging from reinforcement learning to autonomous systems.…

机器学习 · 计算机科学 2022-07-18 Sarosij Bose

Training convolutional neural networks (CNNs) with a strict Lipschitz constraint under the $l_{2}$ norm is useful for provable adversarial robustness, interpretable gradients and stable training. While $1$-Lipschitz CNNs can be designed by…

机器学习 · 计算机科学 2022-03-29 Sahil Singla , Surbhi Singla , Soheil Feizi

The Lipschitz constant plays a crucial role in certifying the robustness of neural networks to input perturbations. Since calculating the exact Lipschitz constant is NP-hard, efforts have been made to obtain tight upper bounds on the…

机器学习 · 计算机科学 2024-10-30 Yuezhu Xu , S. Sivaranjani

Deep neural networks trained using a softmax layer at the top and the cross-entropy loss are ubiquitous tools for image classification. Yet, this does not naturally enforce intra-class similarity nor inter-class margin of the learned deep…

计算机视觉与模式识别 · 计算机科学 2017-12-06 José Lezama , Qiang Qiu , Pablo Musé , Guillermo Sapiro

We study the approximation properties of neural ordinary differential equations (neural ODEs) in the space of continuous functions. Since a neural ODE requires input and output dimensions to be the same, while input and output dimensions of…

Neural networks are getting better accuracy with higher energy and computational cost. After quantization, the cost can be greatly saved, and the quantized models are more hardware friendly with acceptable accuracy loss. On the other hand,…

机器学习 · 计算机科学 2021-10-26 Chang Song , Riya Ranjan , Hai Li

The Lenstra-Lenstra-Lov\'asz (LLL) algorithm is the most practical lattice reduction algorithm in digital communications. In this paper, several variants of the LLL algorithm with either lower theoretic complexity or fixed-complexity…

信息论 · 计算机科学 2010-06-11 Cong Ling , Wai Ho Mow , Nick Howgrave-Graham

In this work, we present a multiscale approach for the reliable coarse-scale approximation of spatial network models represented by a linear system of equations with respect to the nodes of a graph. The method is based on the ideas of the…

数值分析 · 数学 2023-12-18 Moritz Hauck , Roland Maier , Axel Målqvist

In this work, we propose a dissipativity-based method for Lipschitz constant estimation of 1D convolutional neural networks (CNNs). In particular, we analyze the dissipativity properties of convolutional, pooling, and fully connected layers…

机器学习 · 计算机科学 2023-06-21 Patricia Pauli , Dennis Gramlich , Frank Allgöwer

This paper proposes a theoretical and computational framework for training and robustness verification of implicit neural networks based upon non-Euclidean contraction theory. The basic idea is to cast the robustness analysis of a neural…

机器学习 · 计算机科学 2022-08-09 Saber Jafarpour , Alexander Davydov , Matthew Abate , Francesco Bullo , Samuel Coogan

Randomized smoothing is a widely adopted technique for optimizing nonsmooth objective functions. However, its efficiency analysis typically relies on global Lipschitz continuity, a condition rarely met in practical applications. To address…

最优化与控制 · 数学 2025-09-10 Jingfan Xia , Zhenwei Lin , Qi Deng