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We explore the potential for using a nonsmooth loss function based on the max-norm in the training of an artificial neural network. We hypothesise that this may lead to superior classification results in some special cases where the…

机器学习 · 计算机科学 2021-07-20 Vinesha Peiris , Nadezda Sukhorukova , Vera Roshchina

When faced with distribution shift at test time, deep neural networks often make inaccurate predictions with unreliable uncertainty estimates. While improving the robustness of neural networks is one promising approach to mitigate this…

机器学习 · 计算机科学 2021-09-28 Aurick Zhou , Sergey Levine

Machine unlearning algorithms are increasingly important as legal concerns arise around the provenance of training data, but verifying the success of unlearning is often difficult. Provable guarantees for unlearning are often limited to…

机器学习 · 计算机科学 2025-04-22 Stanley Wei , Sadhika Malladi , Sanjeev Arora , Amartya Sanyal

Understanding the uncertainty of a neural network's (NN) predictions is essential for many purposes. The Bayesian framework provides a principled approach to this, however applying it to NNs is challenging due to large numbers of parameters…

机器学习 · 统计学 2020-02-27 Tim Pearce , Felix Leibfried , Alexandra Brintrup , Mohamed Zaki , Andy Neely

This paper proposes a new methodology for performing Bayesian inference in imaging inverse problems where the prior knowledge is available in the form of training data. Following the manifold hypothesis and adopting a generative modelling…

统计方法学 · 统计学 2021-03-19 Matthew Holden , Marcelo Pereyra , Konstantinos C. Zygalakis

Deep learning has gained great popularity due to its widespread success on many inference problems. We consider the application of deep learning to the sparse linear inverse problem encountered in compressive sensing, where one seeks to…

信息论 · 计算机科学 2016-07-21 Mark Borgerding , Philip Schniter

Datasets in engineering applications are often limited and contaminated, mainly due to unavoidable measurement noise and signal distortion. Thus, using conventional data-driven approaches to build a reliable discriminative model, and…

机器学习 · 统计学 2020-04-14 Xihaier Luo , Ahsan Kareem

Unsupervised learning is of growing interest because it unlocks the potential held in vast amounts of unlabelled data to learn useful representations for inference. Autoencoders, a form of generative model, may be trained by learning to…

计算机视觉与模式识别 · 计算机科学 2018-01-08 Antonia Creswell , Anil Anthony Bharath

Consider the problem of estimating a low-rank matrix when its entries are perturbed by Gaussian noise. If the empirical distribution of the entries of the spikes is known, optimal estimators that exploit this knowledge can substantially…

统计理论 · 数学 2019-08-08 Andrea Montanari , Ramji Venkataramanan

Algorithm unrolling has emerged as a learning-based optimization paradigm that unfolds truncated iterative algorithms in trainable neural-network optimizers. We introduce Stochastic UnRolled Federated learning (SURF), a method that expands…

机器学习 · 计算机科学 2024-02-08 Samar Hadou , Navid NaderiAlizadeh , Alejandro Ribeiro

Compressing giant neural networks has gained much attention for their extensive applications on edge devices such as cellphones. During the compressing process, one of the most important procedures is to retrain the pre-trained models using…

机器学习 · 计算机科学 2019-12-23 Yehui Tang , Shan You , Chang Xu , Boxin Shi , Chao Xu

Deep neural networks have gained tremendous success in a broad range of machine learning tasks due to its remarkable capability to learn semantic-rich features from high-dimensional data. However, they often require large-scale labelled…

计算机视觉与模式识别 · 计算机科学 2020-07-21 Hu Wang , Guansong Pang , Chunhua Shen , Congbo Ma

Compressed sensing techniques enable efficient acquisition and recovery of sparse, high-dimensional data signals via low-dimensional projections. In this work, we propose Uncertainty Autoencoders, a learning framework for unsupervised…

机器学习 · 统计学 2019-04-15 Aditya Grover , Stefano Ermon

Quantum compressed sensing is the fundamental tool for low-rank density matrix tomographic reconstruction in the informationally incomplete case. We examine situations where the acquired information is not enough to allow one to obtain a…

We propose an interpretable graph neural network framework to denoise single or multiple noisy graph signals. The proposed graph unrolling networks expand algorithm unrolling to the graph domain and provide an interpretation of the…

信号处理 · 电气工程与系统科学 2021-09-08 Siheng Chen , Yonina C. Eldar , Lingxiao Zhao

Uncertainty quantification for deep learning is a challenging open problem. Bayesian statistics offer a mathematically grounded framework to reason about uncertainties; however, approximate posteriors for modern neural networks still…

机器学习 · 统计学 2020-01-23 Nicolas Brosse , Carlos Riquelme , Alice Martin , Sylvain Gelly , Éric Moulines

Compressing neural nets is an active research problem, given the large size of state-of-the-art nets for tasks such as object recognition, and the computational limits imposed by mobile devices. We give a general formulation of model…

机器学习 · 计算机科学 2017-07-06 Miguel Á. Carreira-Perpiñán

Deep neural networks are widely used for classification. These deep models often suffer from a lack of interpretability -- they are particularly difficult to understand because of their non-linear nature. As a result, neural networks are…

人工智能 · 计算机科学 2017-11-22 Oscar Li , Hao Liu , Chaofan Chen , Cynthia Rudin

In recent years, neural networks (NNs) have become increasingly popular for surrogate modeling tasks in mechanics and materials modeling applications. While traditional NNs are deterministic functions that rely solely on data to learn the…

机器学习 · 统计学 2025-01-03 Javad Ghorbanian , Nicholas Casaprima , Audrey Olivier

In recent years, great success has been witnessed in building problem-specific deep networks from unrolling iterative algorithms, for solving inverse problems and beyond. Unrolling is believed to incorporate the model-based prior with the…

机器学习 · 计算机科学 2021-04-12 Tianjian Meng , Xiaohan Chen , Yifan Jiang , Zhangyang Wang