hyperinterpolation

plural hyperinterpolations

1. uncountableusuallymathematicsinterpolation on a surface of more than two dimensions

   1 more example

   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