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Recurrent neural networks are powerful models for processing sequential data, but they are generally plagued by vanishing and exploding gradient problems. Unitary recurrent neural networks (uRNNs), which use unitary recurrence matrices,…

机器学习 · 统计学 2016-11-02 Scott Wisdom , Thomas Powers , John R. Hershey , Jonathan Le Roux , Les Atlas

Networks of the brain are composed of a very large number of neurons connected through a random graph and interacting after random delays that both depend on the anatomical distance between cells. In order to comprehend the role of these…

数学物理 · 物理学 2014-05-16 Cristobal Quininao , Jonathan Touboul

Recently proposed Gated Linear Networks present a tractable nonlinear network architecture, and exhibit interesting capabilities such as learning with local error signals and reduced forgetting in sequential learning. In this work, we…

机器学习 · 计算机科学 2022-12-13 Qianyi Li , Haim Sompolinsky

It is well-known that randomly initialized, push-forward, fully-connected neural networks weakly converge to isotropic Gaussian processes, in the limit where the width of all layers goes to infinity. In this paper, we propose to use the…

机器学习 · 统计学 2025-05-20 Simmaco Di Lillo , Domenico Marinucci , Michele Salvi , Stefano Vigogna

Clustering and closure coefficients are among the most widely applied indicators in the description of the topological structure of a network. Many distinct definitions have been proposed over time, particularly in the case of weighted…

物理与社会 · 物理学 2022-12-26 Paolo Bartesaghi , Gian Paolo Clemente , Rosanna Grassi

Convolutional Neural Networks (CNN) and the locally connected layer are limited in capturing the importance and relations of different local receptive fields, which are often crucial for tasks such as face verification, visual question…

机器学习 · 计算机科学 2017-11-23 Liang Pang , Yanyan Lan , Jun Xu , Jiafeng Guo , Xueqi Cheng

Universal approximation theorems provide a mathematical explanation for the expressive power of neural networks. They assert that, under mild conditions on the activation function, feedforward neural networks are dense in broad function…

机器学习 · 计算机科学 2026-05-21 Soumendu Sundar Mukherjee , Himasish Talukdar

It is well known that Artificial Neural Networks are universal approximators. The classical result proves that, given a continuous function on a compact set on an n-dimensional space, then there exists a one-hidden-layer feedforward network…

机器学习 · 计算机科学 2020-07-23 Rocio Gonzalez-Diaz , Miguel A. Gutiérrez-Naranjo , Eduardo Paluzo-Hidalgo

Deep neural networks (DNNs) at convergence consistently represent the training data in the last layer via a highly symmetric geometric structure referred to as neural collapse. This empirical evidence has spurred a line of theoretical…

机器学习 · 计算机科学 2024-10-08 Arthur Jacot , Peter Súkeník , Zihan Wang , Marco Mondelli

Recent neural network architectures such as the basic recurrent neural network (RNN) and Gated Recurrent Unit (GRU) have gained prominence as end-to-end learning architectures for natural language processing tasks. But what is the…

计算与语言 · 计算机科学 2019-06-20 Samuel A. Korsky , Robert C. Berwick

We prove large and moderate deviations for the output of Gaussian fully connected neural networks. The main achievements concern deep neural networks (i.e., when the model has more than one hidden layer) and hold for bounded and continuous…

概率论 · 数学 2026-04-01 Claudio Macci , Barbara Pacchiarotti , Giovanni Luca Torrisi

We investigate the expressive power of depth-2 bandlimited random neural networks. A random net is a neural network where the hidden layer parameters are frozen with random assignment, and only the output layer parameters are trained by…

机器学习 · 计算机科学 2023-06-01 Ming Li , Sho Sonoda , Feilong Cao , Yu Guang Wang , Jiye Liang

Overparameterized fully-connected neural networks have been shown to behave like kernel models when trained with gradient descent, under mild conditions on the width, the learning rate, and the parameter initialization. In the limit of…

机器学习 · 计算机科学 2025-11-11 William St-Arnaud , Margarida Carvalho , Golnoosh Farnadi

There is currently a debate within the neuroscience community over the likelihood of the brain performing backpropagation (BP). To better mimic the brain, training a network $\textit{one layer at a time}$ with only a "single forward pass"…

机器学习 · 统计学 2022-02-10 Chieh Wu , Aria Masoomi , Arthur Gretton , Jennifer Dy

This article studies the infinite-width limit of deep feedforward neural networks whose weights are dependent, and modelled via a mixture of Gaussian distributions. Each hidden node of the network is assigned a nonnegative random variable…

机器学习 · 统计学 2025-02-06 Hoil Lee , Fadhel Ayed , Paul Jung , Juho Lee , Hongseok Yang , François Caron

Recent works have shown that gradient descent can find a global minimum for over-parameterized neural networks where the widths of all the hidden layers scale polynomially with $N$ ($N$ being the number of training samples). In this paper,…

机器学习 · 计算机科学 2020-12-21 Quynh Nguyen , Marco Mondelli

There is currently a debate within the neuroscience community over the likelihood of the brain performing backpropagation (BP). To better mimic the brain, training a network \textit{one layer at a time} with only a "single forward pass" has…

机器学习 · 统计学 2022-02-09 Chieh Wu , Aria Masoomi , Arthur Gretton , Jennifer Dy

In this paper we approach the problem of unique and stable identifiability of generic deep artificial neural networks with pyramidal shape and smooth activation functions from a finite number of input-output samples. More specifically we…

机器学习 · 计算机科学 2021-01-19 Christian Fiedler , Massimo Fornasier , Timo Klock , Michael Rauchensteiner

This article is concerned with the approximation and expressive powers of deep neural networks. This is an active research area currently producing many interesting papers. The results most commonly found in the literature prove that neural…

机器学习 · 计算机科学 2019-05-08 I. Daubechies , R. DeVore , S. Foucart , B. Hanin , G. Petrova

We demonstrate that a very deep ResNet with stacked modules with one neuron per hidden layer and ReLU activation functions can uniformly approximate any Lebesgue integrable function in $d$ dimensions, i.e. $\ell_1(\mathbb{R}^d)$. Because of…

机器学习 · 计算机科学 2018-07-05 Hongzhou Lin , Stefanie Jegelka