Provides the standard operations for signal processing on graphs:
graph Fourier transform, spectral graph wavelet transform,
visualization tools. It also implements a data driven method
for graph signal denoising/regression, for details see
De Loynes, Navarro, Olivier (2019) .
The package also provides an interface to the SuiteSparse Matrix Collection,
, a large and widely used set of sparse matrix
benchmarks collected from a wide range of applications.