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

JM Cardenas, B Adcock… - Advances in Neural …, 2023 - 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 …

Optimal sampling for least-squares approximation

B Adcock - arxiv preprint arxiv:2409.02342, 2024 - arxiv.org
Least-squares approximation is one of the most important methods for recovering an
unknown function from data. While in many applications the data is fixed, in many others …

An adaptive sampling and domain learning strategy for multivariate function approximation on unknown domains

B Adcock, JM Cardenas, N Dexter - SIAM Journal on Scientific Computing, 2023 - SIAM
Many problems arising in computational science and engineering can be described in terms
of approximating a smooth function of variables, defined over an unknown domain of …

A new polynomial chaos expansion method for uncertainty analysis with aleatory and epistemic uncertainties

W He, C Gao, G Li, J Zhou - Structural and Multidisciplinary Optimization, 2024 - Springer
The probability and evidence theories are frequently used tool to deal with the mixture of
aleatory and epistemic uncertainties. Due to the double-loop procedure for the mixed …

Model-adapted Fourier sampling for generative compressed sensing

A Berk, S Brugiapaglia, Y Plan, M Scott… - arxiv preprint arxiv …, 2023 - arxiv.org
We study generative compressed sensing when the measurement matrix is randomly
subsampled from a unitary matrix (with the DFT as an important special case). It was recently …

Adaptive sampling strategies for function approximation in high dimensions

JM Cardenas Cardenas - 2023 - summit.sfu.ca
Many problems in computational science and engineering can be cast as approximating a
high-dimensional function from data. These types of problems involves at least three main …

[PDF][PDF] An adaptive sampling strategy to approximate partial differential equations from noisy data

B Adcock, JM Cardenas, A Doostan - BOOK OF - ci2ma.udec.cl
Many problems in computational science, engineering, and uncertainty quantification (UQ)
require the approximation of Partial Differential Equations (PDEs) from corrupted data, which …

A general framework for active learning in regression, with applications to numerical PDEs

B Adcock, JM Cardenas, N Dexter - BOOK OF - ci2ma.udec.cl
Active learning is an important concept in machine learning, in which the learning algorithm
is able to choose where to query the underlying ground truth to improve the accuracy of the …