Results 21 to 30 of about 320,618 (297)

Wiener Splines

open access: yesScientific Visualization Conference (dagstuhl '97), 1997
We describe an alternative way of constructing interpolating B-spline curves, surfaces or volumes in Fourier space which can be used for visualization. In our approach the interpolation problem is considered from a signal processing point of view and is reduced to finding an inverse B-spline filter sequence.
Gross, Markus, Kleiner, David
openaire   +2 more sources

Just Another Gibbs Additive Modeler: Interfacing JAGS and mgcv

open access: yesJournal of Statistical Software, 2016
The BUGS language offers a very flexible way of specifying complex statistical models for the purposes of Gibbs sampling, while its JAGS variant offers very convenient R integration via the rjags package.
Simon N. Wood
doaj   +1 more source

Variable degree polynomial splines are Chebyshev splines [PDF]

open access: yesAdvances in Computational Mathematics, 2011
Variable degree polynomial (VDP) splines have recently proved themselves as a valuable tool in obtaining shape preserving approximations. However, some usual properties which one would expect of a spline space in order to be useful in geometric modeling, do not follow easily from their definition.
Bosner, Tina, Rogina, Mladen
openaire   +2 more sources

Boosting Additive Models using Component-wise P-Splines [PDF]

open access: yes, 2007
We consider an efficient approximation of Bühlmann & Yu’s L2Boosting algorithm with component-wise smoothing splines. Smoothing spline base-learners are replaced by P-spline base-learners which yield similar prediction errors but are more advantageous ...
Hothorn, Torsten, Schmid, Matthias
core   +1 more source

An Assessment of Methods and Remote-Sensing Derived Covariates for Regional Predictions of 1 km Daily Maximum Air Temperature

open access: yesRemote Sensing, 2014
The monitoring and prediction of biodiversity and environmental changes is constrained by the availability of accurate and spatially contiguous climatic variables at fine temporal and spatial grains.
Benoit Parmentier   +8 more
doaj   +1 more source

BMICA-independent component analysis based on B-spline mutual information estimator [PDF]

open access: yes, 2012
The information theoretic concept of mutual information provides a general framework to evaluate dependencies between variables. Its estimation however using B-Spline has not been used before in creating an approach for Independent Component Analysis. In
Li, Yan, Walters-Williams, Janett
core   +1 more source

Combined approximation algorithms for interactive design of road routes in CAD

open access: yesРоссийский технологический журнал, 2023
Objectives. The aim of the work is to create algorithms for approximating a sequence of points on a plane by arcs of clothoids and circles. Such a problem typically arises in the design of railroad and highway routes.
D. A. Karpov, V. I. Struchenkov
doaj   +1 more source

Cubic spline prewavelets on the four-directional mesh [PDF]

open access: yes, 2003
In this paper, we design differentiable, two dimensional, piecewise polynomial cubic prewavelets of particularly small compact support. They are given in closed form, and provide stable, orthogonal decompositions of $L^2(\RR^2)$.
Buhmann, M. D.   +2 more
core   +3 more sources

Polynomial spline-approximation of Clarke's model [PDF]

open access: yes, 2004
We investigate polynomial spline approximation of stationary random processes on a uniform grid applied to Clarke's model of time variations of path amplitudes in multipath fading channels with Doppler scattering. The integral mean square error (MSE) for
Adlard, J F, Tozer, T C, Zakharov, Y V
core   +1 more source

New approach for solution of volterra integral equations using spline quasi-interpolant [PDF]

open access: yesJournal of Hyperstructures, 2019
In this paper, we present quadratic rule for approximate solution of integrals using spline quasi-interpolant. The methodis applied for solving the linear Volterra integral equations. Also the convergence analysis of the method is given.
Maryam Derakhshan Khanghah   +1 more
doaj   +1 more source

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