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math.NA2024
Hard thresholding hyperinterpolation over general regions
Congpei An, Jiashu Ran
This paper proposes a novel variant of hyperinterpolation, called hard thresholding hyperinterpolation. This approximation scheme of degree leverages a hard thresholding operat…
math.NA2024
Hybrid hyperinterpolation over general regions
Congpei An, Jiashu Ran, Alvise Sommariva
We present an -regularized discrete least squares approximation over general regions under assumptions of hyperinterpolation, named hybrid hyperinterpolation. Hybr…