Threshold-free estimation of entropy from a Pearson matrix
Europhysics Letters January 24, 2023 H. Felippe, Aline Viol, Dráulio Barros de Araújo et al. 9 citations
A new method directly estimates a unique entropy from a Pearson correlation matrix without requiring arbitrary thresholding. The approach rescales the matrix so it satisfies conditions for a von Neumann-like entropy. The method is demonstrated on neuroimaging time series from human brains under a psychedelic.