Welcome to GroupedTransforms.jl

The nonequispaced Grouped Transformations have been introduced in Bartel, Potts, Schmischke, 2021 to provide a fast method for the multiplication of matrices with the Fourier or the cosine system supported on frequency index sets with low-dimensional support.

Literature

• [Bartel, Potts, Schmischke, 2021] F. Bartel, D. Potts, M. Schmischke. Grouped transformations in high-dimensional explainable ANOVA approximation. Preprint 2021. arXiv: 2010.10199.