[HTML][HTML] A novel class of stabilized greedy kernel approximation algorithms: Convergence, stability and uniform point distribution

T Wenzel, G Santin, B Haasdonk - Journal of Approximation Theory, 2021 - Elsevier
Kernel based methods provide a way to reconstruct potentially high-dimensional functions
from meshfree samples, ie, sampling points and corresponding target values. A crucial …

Analysis of Target Data-Dependent Greedy Kernel Algorithms: Convergence Rates for f-, - and f/P-Greedy

T Wenzel, G Santin, B Haasdonk - Constructive Approximation, 2023 - Springer
Data-dependent greedy algorithms in kernel spaces are known to provide fast converging
interpolants, while being extremely easy to implement and efficient to run. Despite this …

[PDF][PDF] Kernel methods for surrogate modeling

G Santin, B Haasdonk - System-and Data-Driven Methods and …, 2021 - library.oapen.org
This chapter deals with kernel methods as a special class of techniques for surrogate
modeling. Kernel methods have proven to be efficient in machine learning, pattern …

Comparison of data-driven uncertainty quantification methods for a carbon dioxide storage benchmark scenario

M Köppel, F Franzelin, I Kröker, S Oladyshkin… - Computational …, 2019 - Springer
A variety of methods is available to quantify uncertainties arising within the modeling of flow
and transport in carbon dioxide storage, but there is a lack of thorough comparisons …

Numerical modelling of a peripheral arterial stenosis using dimensionally reduced models and kernel methods

T Koeppl, G Santin, B Haasdonk… - International journal for …, 2018 - Wiley Online Library
In this work, we consider 2 kinds of model reduction techniques to simulate blood flow
through the largest systemic arteries, where a stenosis is located in a peripheral artery, ie, in …

Interpolation with uncoupled separable matrix-valued kernels

D Wittwar, G Santin, B Haasdonk - arxiv preprint arxiv:1807.09111, 2018 - arxiv.org
In this paper we consider the problem of approximating vector-valued functions over a
domain $\Omega $. For this purpose, we use matrix-valued reproducing kernels, which can …

Integration of moment equations in a reduced-order modeling strategy for Monte Carlo simulations of groundwater flow

CA **a, D Pasetto, BX Hu, M Putti, A Guadagnini - Journal of Hydrology, 2020 - Elsevier
We illustrate and test an approach grounded on embedding moment equations (MEs) of
groundwater flow within a Monte Carlo based modeling strategy to yield a Reduced-Order …

An adaptive sparse kernel technique in greedy algorithm framework to simulate an anomalous solute transport model

M Raei, HR Ghehsareh, A Galletti - Engineering Analysis with Boundary …, 2020 - Elsevier
In the current work, an efficient and powerful computational technique is implemented to
simulate an anomalous mobile-immobile solute transport process. The process is …

[PDF][PDF] Learning with subsampled kernel-based methods: Environmental and financial applications

MA Shahrokhabadi, A Neisy… - … Research Notes on …, 2019 - research.unipd.it
Kernel machines are widely used tools for extracting features from given data. In this context,
there are many available techniques that are able to predict, within a certain tolerance, the …

Low-rank and sparse approximations for contact mechanics

KS Kollepara - arxiv preprint arxiv:2405.20211, 2024 - arxiv.org
(Rephrased) Non-conformance decision-making processes in high-precision manufacturing
of engineering structures are often delayed due to numerical simulations that are needed for …