LOCUS                   LOCUS: Low-rank decomposition of brain
                        connectivity matrices with uniform sparsity
LOCUS_BIC_selection     BIC-based Hyper-parameters selection for LOCUS
Ltrans                  Map a symmetric matrix into its upper triangle
                        part.
Ltrinv                  Inverse function of 'Ltrans' to map back a
                        vector into a symmetric matrix.
