learn_bipartite_graph_nie
                        Laplacian matrix of a k-component bipartite
                        graph via Nie's method Computes the Laplacian
                        matrix of a bipartite graph on the basis of an
                        observed similarity matrix.
learn_connected_bipartite_graph_pgd
                        Laplacian matrix of a connected bipartite graph
                        with Gaussian data Computes the Laplacian
                        matrix of a bipartite graph on the basis of an
                        observed data matrix.
learn_heavy_tail_bipartite_graph_pgd
                        Laplacian matrix of a connected bipartite graph
                        with heavy-tailed data Computes the Laplacian
                        matrix of a bipartite graph on the basis of an
                        observed data matrix whose distribution is
                        assumed to be Student-t.
learn_heavy_tail_kcomp_bipartite_graph
                        Laplacian matrix of a k-component bipartite
                        graph with heavy-tailed data Computes the
                        Laplacian matrix of a k-component bipartite
                        graph on the basis of an observed data matrix
                        whose distribution is assumed to be Student-t.
