Sciweavers

ADCM
2010
62views more  ADCM 2010»
13 years 11 months ago
Two condensed macro-elements with full approximation power
A variant of the classical C1 Powell-Sabin-12 macro-element is defined that has the same approximation power, but has fewer degrees of freedom and only requires vertex data. The sa...
Peter Alfeld, Larry L. Schumaker, Tatyana Sorokina
ADCM
2010
90views more  ADCM 2010»
13 years 11 months ago
Local reconstruction for sampling in shift-invariant spaces
The local reconstruction from samples is one of most desirable properties for many applications in signal processing, but it has not been given as much attention. In this paper, we...
Qiyu Sun
ADCM
2010
93views more  ADCM 2010»
13 years 11 months ago
Computation of interpolatory splines via triadic subdivision
We present an algorithm for computation of interpolatory splines of arbitrary order at triadic rational points. The algorithm is based on triadic subdivision of splines. Explicit ...
Valery A. Zheludev, Amir Averbuch
ADCM
2010
59views more  ADCM 2010»
13 years 11 months ago
Sampling inequalities for infinitely smooth functions, with applications to interpolation and machine learning
Sampling inequalities give a precise formulation of the fact that a differentiable function cannot attain large values, if its derivatives are bounded and if it is small on a suff...
Christian Rieger, Barbara Zwicknagl
ADCM
2010
129views more  ADCM 2010»
13 years 11 months ago
Construction of positive definite cubature formulae and approximation of functions via Voronoi tessellations
Let Rd be a compact convex set of positive measure. In a recent paper, we established a definiteness theory for cubature formulae of order two on . Here we study extremal propert...
Allal Guessab, Gerhard Schmeisser
ADCM
2010
93views more  ADCM 2010»
13 years 11 months ago
Alternative dual frames for digital-to-analog conversion in sigma-delta quantization
Mark Lammers, Alexander M. Powell, Özgür...
ADCM
2010
92views more  ADCM 2010»
13 years 11 months ago
Construction of infinite unimodular sequences with zero autocorrelation
Unimodular waveforms x are constructed on the integers with the property that the autocorrelation of x is one at the origin and zero elsewhere. There are three different constructi...
John J. Benedetto, Somantika Datta
ADCM
2010
89views more  ADCM 2010»
13 years 11 months ago
Minimization of convex functionals over frame operators
Abstract. We present results about minimization of convex functionals defined over a finite set of vectors in a finite dimensional Hilbert space, that extend several known results ...
Pedro Massey, Mariano Ruiz
ADCM
2010
85views more  ADCM 2010»
13 years 11 months ago
Stability of kernel-based interpolation
It is often observed that interpolation based on translates of radial basis functions or non-radial kernels is numerically unstable due to exceedingly large condition of the kerne...
Stefano De Marchi, Robert Schaback