GSPBOX - Utils

Tests graphs

• gsp_check_connectivity - Check the connectivity
• gsp_check_connectivity_undirected - Check the connectivity for undirected graph
• gsp_isdirected - Check if the graph is directed
• gsp_check_weights - Check the weight matrix
• gsp_check_fourier - Check if the Fourier bais is computed
• gsp_check_filtertype - Check the filtertype

Norms

• gsp_norm_tv - TV norm on graphs
• gsp_norm_tik - Squared L2 norm of the gradient on graph
• gsp_norm_l1_filterbank - L1 norm of a signal after application of a filterbank
• gsp_norm_l2_filterbank - L2 norm of a signal after application of a filterbank
• gsp_norm_tig - Norms of the atoms of a kernel

Distance

• gsp_resistance_distances - Compute the resistance distance
• gsp_distanz - Compute all euclidean distances
• gsp_nn_distanz - Compute the nearest neighbors distances
• gsp_rmse_mv - Compute all RMSE with missing values
• gsp_hop_distanz - Hop distances

Approximation

• gsp_cheby_coeff - Compute Chebysheff coefficients
• gsp_cheby_op - Chebysheff polynomial approximation
• gsp_cheby_eval - Evaluate the Chebyshev polynomial

Time-Vertex Approximation

• gsp_jtv_cheby_coeff - Compute Chebysheff coefficients of time-vertex filterbanks
• gsp_jtv_cheby_op - Chebysheff polynomial approximation of time-vertex filterbanks

Graph operations

• gsp_adj2vec - Precompute the gradient matrix
• gsp_vec2adj - Compute the weight marix from binary adjacency matrix and vector of weights
• gsp_compute_fourier_basis - Compute the graph Fourier basis
• gsp_create_laplacian - Create the laplacian from the weight matrix
• gsp_incidence - Create the incidence matrix
• gsp_estimate_lmax - Estimate the maximum Laplacian eigenvalue
• gsp_fast_estimate_lk - Estimate the k-th eigenvalue of the Laplacian
• gsp_graph_sparsify - Sparsify the graph
• gsp_symmetrize - Symmetrize a graph
• gsp_assign_rand_direction - Assign random direction to the edges of the graph

Others

• gsp_jtv_fa - Create frequency axis
• gsp_jtv_ta - Create time axis
• gsp_decompose_asymmatrix - Decompose a matrix in symmetric and asymmetric part
• gsp_repmatline - Variation of the function repmat
• gsp_classic2graph_eig_order - Mapping for the ordering of the ring and the DFT
• gsp_reset_seed - Set the seed for reproducibility
• gsp_plotfig - Helping function to save figures
• gsp_point2dcdf - Points to discrete continuous density function
• gsp_ddf2dcdf - Discrete to dicrete cumulative density function
• gsp_good_graph_index - Compute how well a graph fits a given data matrix

For help, bug reports, suggestions etc. please send email to gspbox 'dash' support 'at' groupes 'dot' epfl 'dot' ch