Fig. 3
From: Time-varying graph learning from smooth and stationary graph signals with hidden nodes
Graphical representation of the ground-truth graph and the estimated graph at t=1 time slot with N = 20 and H = 1. a represents the ground-truth graph and the corresponding covariance matrix in (e). The ground-truth matrices \(\tilde{\textbf{L}}_{ O }^{(1)}\) and \(\tilde{\textbf{P}}^{(1)}\) are represented in the second column [cf. panels (b) and (f)]. Analogously, the estimates \(\hat{\textbf{L}}_ O ^{(1)}\) and \(\hat{\textbf{P}}^{(1)}\) generated by (13) are represented in panels (c) and (g), those generated by (12) in panels (d) and (h)