This function evaluates the density level of a precision matrix based on the Dens criterion function in equation (5) of Wang et al. (2016).
prec2dens(precision)Input precision matrix (symmetric and positive definite).
Density level from Precision matrix.
Wang, Y., Kang, J., Kemmer P. and Guo, Y. (2016). An efficient and reliable statistical method for estimating functional connectivity in large scale brain networks using partial correlation. Front. Neurosci. 10:123. doi: 10.3389/fnins.2016.00123