Exponentiation of parametric Hamiltonians via unitary interpolation
Physical Review ResearchThe effort to generate matrix exponentials and associated differentials, required to determine the time evolution of quantum systems, frequently constrains the evaluation of problems in quantum control theory, variational circuit compilation, or Monte ...
Michael Schilling +4 more
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Accuracy Assessment of LiDAR-Derived Digital Elevation Models Based on Approximation Theory
Remote Sensing, 2015 The cumulative error at a point in a LiDAR-derived DEM consists of three components: propagated LiDAR-sensor error, propagated ground error, and interpolation error.
XiaoHang Liu, Hai Hu, Peng Hu
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Sparse interpolation and rational approximation
, 2016 Sparse interpolation or exponential analysis, is widely used and in quite different applications and areas of science and engineering. Therefore researchers are often not aware of similar studies going on in another field.
Lee, Wen-shin +2 more
core +2 more sources
Approximation of Bivariate Functions by Generalized Wendland Radial Basis Functions
MathematicsIn this work, we deal with two approximation problems in a finite-dimensional generalized Wendland space of compactly supported radial basis functions. Namely, we present an interpolation method and a smoothing variational method in this space. Next, the
Abdelouahed Kouibia +5 more
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Interpolation of Cones and Shape-Preserving Approximation
Journal of Approximation Theory, 2002 In this paper, we present an approach to shape-preserving approximation based on interpolation space theory. In particular, we prove the corresponding approximation result related to the intersection property of the cone of nonnegative functions with ...
Inna Kozlov, Kozlov, Inna
exaly +2 more sources
Interpolation, Approximation and Controllability of Deep Neural Networks [PDF]
arXiv.org, 2023 We investigate the expressive power of deep residual neural networks idealized as continuous dynamical systems through control theory. Specifically, we consider two properties that arise from supervised learning, namely universal interpolation - the ...
Jingpu Cheng +3 more
semanticscholar +1 more source
The embedding theorems for anisotropic Nikol’skii-Besov spaces with generalized mixed smoothness [PDF]
Қарағанды университетінің хабаршысы. Математика сериясы, 2021 The theory of embedding of spaces of differentiable functions studies the important relations of differential (smoothness) properties of functions in various metrics and has a wide application in the theory of boundary value problems of ...
K.A. Bekmaganbetov +2 more
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On the optimality of target-data-dependent kernel greedy interpolation in Sobolev Reproducing Kernel Hilbert Spaces [PDF]
SIAM Journal on Numerical Analysis, 2023 Kernel interpolation is a versatile tool for the approximation of functions from data, and it can be proven to have some optimality properties when used with kernels related to certain Sobolev spaces.
G. Santin, T. Wenzel, B. Haasdonk
semanticscholar +1 more source
Approximation by interpolation spectral subspaces of operators with discrete spectrum
Математичні Студії, 2021 The paper describes approximation properties of interpolation spectral subspaces of an unbounded operator $A$ with discrete spectrum $\sigma(A)$ in a Banach space $\mathfrak X$, as well as ones corresponding subspaces ${\mathcal E}_{q,p}^{\nu}(A)$ of ...
M.I. Dmytryshyn
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Approximation Theory of Tree Tensor Networks: Tensorized Univariate Functions [PDF]
Constructive approximation, 2020 We study the approximation of univariate functions by combining tensorization of functions with tensor trains (TTs)—a commonly used type of tensor networks (TNs).
Mazen Ali, A. Nouy
semanticscholar +1 more source