hyperinterpolation
nounEtymology From hyper- + interpolation.
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Mathematics, Sciences Usually interpolation on a surface of more than two dimensions
- The resulting "filtered polynomial approximation" (a spherical polynomial of degree 2L-1) is then made fully discrete by approximating the inner product integrals by an N-point cubature rule of suitably high polynomial degree of precision, giving an approximation called "filtered hyperinterpolation".2015, Heping Wang, Ian H. Sloan, “On filtered polynomial approximation on the sphere”, in arXiv: