TVGL is a python solver for inferring dynamic networks from raw time series data. For implementation details, refer to the paper, available at: http://stanford.edu/~hallac/TVGL.pdf.
Download the source code by running the following code in the terminal:
git clone https://github.com/davidhallac/TVGL.gitTVGL can be called through the following file:
TVGL.pyParameters
data : a T-by-n numpy array with the raw data (each row is a new timestamp)
lengthOfSlice : Number of samples in each ``slice'', or timestamp
lamb : the lambda regularization parameter controlling the network sparsity (as described in the paper)
beta : the beta parameter controlling the temporal consistency (as described in the paper)
indexOfPenalty : The regularization penalty to use (1 = L1, 2 = L2, 3 = Laplacian, 4 = L_inf, 5 = perturbed node)
verbose = False : Whether or not to run ADMM in ``verbose'' mode (to print intermediate steps)
eps = 3e-3 : Threshold at which we treat output network weight as zero
epsAbs = 1e-3 : ADMM absolute tolerance threshold (see full details in http://stanford.edu/~boyd/papers/pdf/admm_distr_stats.pdf)
epsRel = 1e-3 : ADMM relative tolerance threshold (see http://stanford.edu/~boyd/papers/pdf/admm_distr_stats.pdf)
Running the following script provides an example of how the TVGL solver can be used:
exampleTVGL.py