Operator learning using random features: A tool for scientific computing

NH Nelsen, AM Stuart - SIAM Review, 2024 - SIAM
Supervised operator learning centers on the use of training data, in the form of input-output
pairs, to estimate maps between infinite-dimensional spaces. It is emerging as a powerful …

BelNet: basis enhanced learning, a mesh-free neural operator

Z Zhang, L Wing Tat… - Proceedings of the …, 2023 - royalsocietypublishing.org
Operator learning trains a neural network to map functions to functions. An ideal operator
learning framework should be mesh-free in the sense that the training does not require a …

Error bounds for learning with vector-valued random features

S Lanthaler, NH Nelsen - Advances in Neural Information …, 2024 - proceedings.neurips.cc
This paper provides a comprehensive error analysis of learning with vector-valued random
features (RF). The theory is developed for RF ridge regression in a fully general infinite …

A novel random spectral similar component decomposition method and its application to gear fault diagnosis

F Liu, J Cheng, N Hu, Z Cheng, Y Yang - Mechanical Systems and Signal …, 2024 - Elsevier
Sparse random mode decomposition (SRMD) is a decomposition approach established by
combining sparse random feature model with clustering algorithm. It is not subject to the …

CS4ML: A general framework for active learning with arbitrary data based on Christoffel functions

JM Cardenas, B Adcock… - Advances in Neural …, 2024 - proceedings.neurips.cc
We introduce a general framework for active learning in regression problems. Our
framework extends the standard setup by allowing for general types of data, rather than …

BelNet: Basis enhanced learning, a mesh-free neural operator

Z Zhang, WT Leung, H Schaeffer - arXiv preprint arXiv:2212.07336, 2022 - arxiv.org
Operator learning trains a neural network to map functions to functions. An ideal operator
learning framework should be mesh-free in the sense that the training does not require a …

A novel empirical random feature decomposition method and its application to gear fault diagnosis

F Liu, J Cheng, N Hu, Z Cheng, Y Yang - Advanced Engineering …, 2024 - Elsevier
Sparse random mode decomposition (SRMD) is an emerging signal decomposition method
for analyzing time series data. However, SRMD is unable to adaptively select suitable …

Random feature models for learning interacting dynamical systems

Y Liu, SG McCalla, H Schaeffer - Proceedings of the …, 2023 - royalsocietypublishing.org
Particle dynamics and multi-agent systems provide accurate dynamical models for studying
and forecasting the behaviour of complex interacting systems. They often take the form of a …

Vectorial EM Propagation Governed by the 3D Stochastic Maxwell Vector Wave Equation in Stratified Layers

BM Barclay, EJ Kostelich, A Mahalov - Atmosphere, 2023 - mdpi.com
The modeling and processing of vectorial electromagnetic (EM) waves in inhomogeneous
media are important problems in physics and engineering, and new methods need to be …

A unified framework for learning with nonlinear model classes from arbitrary linear samples

B Adcock, JM Cardenas, N Dexter - arXiv preprint arXiv:2311.14886, 2023 - arxiv.org
This work considers the fundamental problem of learning an unknown object from training
data using a given model class. We introduce a unified framework that allows for objects in …