KernelKnnCV_nmslib      Approximate Kernel k nearest neighbors
                        (cross-validated) using the nmslib library
KernelKnn_nmslib        Approximate Kernel k nearest neighbors using
                        the nmslib library
NMSlib                  Non metric space library
dgCMatrix_2scipy_sparse
                        conversion of an R dgCMatrix to a scipy sparse
                        matrix
mat_2scipy_sparse       conversion of an R matrix to a scipy sparse
                        matrix
