
arXiv: 1406.5962
handle: 20.500.11770/178876
In this paper we extend the Shepard-Bernoulli operators introduced in [6] to the bivariate case. These new interpolation operators are realized by using local support basis functions introduced in [23] instead of classical Shepard basis functions and the bivariate three point extension [13] of the generalized Taylor polynomial introduced by F. Costabile in [11]. The new operators do not require either the use of special partitions of the node convex hull or special structured data as in [8]. We deeply study their approximation properties and provide an application to the scattered data interpolation problem; the numerical results show that this new approach is comparable with the other well known bivariate schemes QSHEP2D and CSHEP2D by Renka [34, 35].
Multivariate polynomial interpolation, Scattered data interpolation, scattered data interpolation, degree of exactness, Multidimensional problems, Combined Shepard operator, Degree of exactness, Numerical Analysis (math.NA), multivariate polynomial interpolation, modified Shepard operator, Primary 41A05, 41A25, Secondary 65D05, 65D15, Numerical interpolation, combined Shepard operator, FOS: Mathematics, Mathematics - Numerical Analysis, Modified Shepard operator, Interpolation in approximation theory
Multivariate polynomial interpolation, Scattered data interpolation, scattered data interpolation, degree of exactness, Multidimensional problems, Combined Shepard operator, Degree of exactness, Numerical Analysis (math.NA), multivariate polynomial interpolation, modified Shepard operator, Primary 41A05, 41A25, Secondary 65D05, 65D15, Numerical interpolation, combined Shepard operator, FOS: Mathematics, Mathematics - Numerical Analysis, Modified Shepard operator, Interpolation in approximation theory
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