Results 51 to 60 of about 626,115 (180)
Natural Cubic Spline Approximation of Risk-Neutral Density
International Journal of Financial StudiesThe risk-neutral density is a fundamental concept in pricing financial derivatives, risk management, and assessing financial markets’ perceptions over significant political or economic events.
Shuang Zhou +4 more
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EfficientL 2 approximation by splines
Numerische Mathematik, 1979 LetS N k (t) be the linear space ofk-th order splines on [0, 1] having the simple knotst i determined from a fixed functiont by the rulet i=t(i/N). In this paper we introduce sequences of operators {Q N } N ? =1 fromC k [0, 1] toS N k (t) which are computationally simple and which, asN??, give essentially the best possible approximations tof and its ...
Barrow, D.L., Smith, P.W.
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Robust and automatic modeling of tunnel structures based on terrestrial laser scanning measurement
International Journal of Distributed Sensor Networks, 2019 The terrestrial laser scanning technology is increasingly applied in the deformation monitoring of tunnel structures. However, outliers and data gaps in the terrestrial laser scanning point cloud data have a deteriorating effect on the model ...
Xiangyang Xu, Hao Yang, Boris Kargoll
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USING SPLINE FUNCTIONS FOR THE SUBSTANTIATION OF TAX POLICIES BY LOCAL AUTHORITIES [PDF]
The paper aims to approach innovative financial instruments for the management of public resources. In the category of these innovative tools have been included polynomial spline functions used for budgetary sizing in the substantiating of fiscal and ...
Bolos Marcel, Otgon Cristian, Pop Razvan
core
Efficient algorithms for robust generalized cross-validation spline smoothing [PDF]
, 2010 Generalized cross-validation (GCV) is a widely used parameter selection criterion for spline smoothing, but it can give poor results if the sample size n is not sufficiently large.
Anderssen, R.S. +5 more
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The use of complex structure splines in roadway design
Российский технологический журналObjectives. The aim of the work is to develop the theory of spline-approximation of a sequence of points on a plane for using compound splines with a complex structure.
V. I. Struchenkov, D. A. Karpov
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Hierarchical Spline Approximation
, 2001 We discuss spline refinement methods that approximate multi-valued data defined over one, two, and three dimensions. The input to our method is a coarse decomposition of the compact domain of the function to be approximated consisting of intervals (univariate case), triangles (bivariate case), and tetrahedra (trivariate case).
Wiley, David F. +5 more
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Copositive Polynomial and Spline Approximation
Journal of Approximation Theory, 1995 Here the authors prove that if a function \(f \in \mathbb{C} [0.1]\) changes sign finitely many times then for any \(n\) large enough the degree of copositive approximation to \(f\) by quadratic splines with \(n-1\) equally spaced knots can be estimated by a constant multiple of \(\omega_2 (f,1/n)\).
Hu, Y.K., Leviatan, D., Yu, X.M.
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Shock and Vibration, 2004 A spline-based differential quadrature method (SDQM) is elaborated and applied to the vibration analysis of rectangular plates with free edges. The sextic B-spline functions are used to construct the pertaining cardinal spline interpolants.
Hongzhi Zhong, Qiang Guo
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Journal of Geodetic Science, 2020 B-spline curves are a linear combination of control points (CP) and B-spline basis functions. They satisfy the strong convex hull property and have a fine and local shape control as changing one CP affects the curve locally, whereas the total number of ...
Kermarrec Gaël, Alkhatib Hamza
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