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gasper (version 1.1.4)

Graph Signal Processing

Description

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.

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Install

install.packages('gasper')

Monthly Downloads

258

Version

1.1.4

License

LGPL (>= 2)

Issues

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Maintainer

Fabien Navarro

Last Published

August 26th, 2023

Functions in gasper (1.1.4)

GVN

Graph Von Neumann Estimator.
analysis

Analysis operator.
zetav

Evaluates tight-frame kernel functions
pittsburgh

Pittsburgh network.
inverse_sgwt

Compute Inverse Spectral Graph Wavelet Transform.
betathresh

Apply Beta Threshold.
plot_filter

Plot tight-frame filters.
grid1

grid1 graph.
laplacian_mat

Laplacian matrix.
fullup

Convert symmetric sparse matrix to full matrix.
synthesis

Synthesis operator.
plot_signal

Plot a signal on top of a given graph
eigensort

Spectral decomposition of a symetric matrix.
gasper-package

gasper: Graph Signal Processing
tight_frame

Tight-frame computation.
plot_graph

Graph plot
full

Convert symmetric sparse matrix to full matrix.
forward_sgwt

Compute Forward Spectral Graph Wavelet Transform.
matmult

Matrix multiplication
minnesota

Minnesota road network.
randsignal

Generate random signal with varying regularity.
eigendec

Spectral decomposition of a symetric matrix
rlogo

R logo graph.
download_graph

Download sparse matrix form the SuiteSparse Matrix Collection.
smoothmodulus

Modulus of smoothness.
swissroll

Swiss roll graph generation
SNR

Signal to Noise Ratio.
PSNR

Peak Signal to Noise Ratio.
NYCdata

NYC network.
adjacency_mat

Compute the adjacency matrix of the gaussian weighted graph
SUREthresh

Stein's Unbiased Risk Estimate.
HPFVN

High Pass Filter Von Neumann Estimator.
SURE_MSEthresh

Stein's Unbiased Risk Estimate.