Results 31 to 40 of about 169,517 (306)
Capturing outlines of generic shapes with cubic B´ezier curves using the Nelder–Mead simplex method [PDF]
Iranian Journal of Numerical Analysis and Optimization, 2019 We design a fast technique for fitting cubic B´ezier curves to the boundary of 2D shapes. The technique is implemented by means of the Nelder–Mead simplex procedure to optimize the control points.
A. Ebrahimi +2 more
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Meteorologische Zeitschrift, 2000 Single (one-dimensional) and bi-cubic (two-dimensional) splines have been used in numerical weather prediction models since about 1970. Especially the semi-Lagrangian advection schemes have been developed with the help of the spline interpolation method.
Thomas Prenosil, H.G. Becker
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Fast spline quasicollocation solvers of integral equations
Mathematical Modelling and Analysis, 2007 A fast (C, Cm) solver for linear Fredholm integral equations u = Tu+f with smooth data is constructed on the basis of a discrete version of the spline quasicollocation method.
Gennadi Vainikko, Indrek Zolk
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Demographic Research, 2021 Background: High-dimensional parametric models with penalized likelihood functions strike a good balance between bias and variance for estimating continuous age schedules from large samples. The penalized spline (P-spline) approach is particularly useful
Carl Schmertmann
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Isogeometric analysis of large-deformation thin shells using RHT-splines for multiple-patch coupling
, 2017 We present an isogeometric thin shell formulation for multi-patches based on rational splines over hierarchical T-meshes (RHT-splines). Nitsche’s method is employed to efficiently couple the patches.
N. Nguyen‐Thanh +6 more
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Splines Are Universal Solutions of Linear Inverse Problems with Generalized TV Regularization [PDF]
SIAM Review, 2016 Splines come in a variety of flavors that can be characterized in terms of some differential operator $L$. The simplest piecewise-constant model corresponds to the derivative operator.
M. Unser, J. Fageot, J. Ward
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Cardinal approximation of functions by splines on an interval
Mathematical Modelling and Analysis, 2009 The cardinal interpolant of functions on the real line by splines is determined by certain formula free of solving large or infinite systems. We apply this formula to functions given on the interval [0,1] introducing special extensions of functions from [
Gennadi Vainikko
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Frontiers in Materials, 2022 We propose an efficient method to determine the micro-structural entropic behavior of polymer chains directly from a sufficiently rich non-homogeneous experiment at the continuum scale.
Víctor J. Amores +4 more
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Mathematical Modelling and Analysis, 2005 A method for numerical solving of boundary values problems of ordinary differential equations based on the use of splines and differentiation matrices with nodes as zeroes of classical orthogonal polynomials is considered. Possibilities of the method are
M. Belovs, T. Cirulis
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P-splines with derivative based penalties and tensor product smoothing of unevenly distributed data [PDF]
Statistics and computing, 2016 The P-splines of Eilers and Marx (Stat Sci 11:89–121, 1996) combine a B-spline basis with a discrete quadratic penalty on the basis coefficients, to produce a reduced rank spline like smoother.
S. Wood
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