Fitting a $C^m$-Smooth Function to Data II
Charles Fefferman, Bo’az Klartag · Revista Matemática Iberoamericana · 2009
We exhibit efficient algorithms to perform the following task: Given a function f defined on a finite subset E \subset \mathbb R^n , compute a C^m function F on \mathbb R^n , with a controlled C^m norm, that approximates f on the subset E .