COF                     Connectivity-based Outlier Factor (COF)
                        algorithm
DB                      Distance-based outlier detection based on
                        user-given neighborhood size
INFLO                   Influenced Outlierness (INFLO) algorithm
KDEOS                   Kernel Density Estimation Outlier Score (KDEOS)
                        algorithm with gaussian kernel
KNN_AGG                 Aggregated k-nearest neighbors distance over
                        different k's
KNN_IN                  In-degree for observations in a k-nearest
                        neighbors graph
KNN_SUM                 Sum of distance to k-nearest neighbors
LDF                     Local Density Factor (LDF) algorithm with
                        gaussian kernel
LDOF                    Local Distance-based Outlier Factor (LDOF)
                        algorithm
LOCI                    Local Correlation Integral (LOCI) algorithm
                        with constant nearest neighbor parameter
LOF                     Local Outlier Factor (LOF) algorithm
LOOP                    Local Outlier Probability (LOOP) algorithm
NAN                     Natural Neighbor (NAN) algorithm to return the
                        self-adaptive neighborhood
NOF                     Natural Outlier Factor (NOF) algorithm
RDOS                    Relative Density-based Outlier Factor (RDOS)
                        algorithm with gaussian kernel
RKOF                    Robust Kernel-based Outlier Factor (RKOF)
                        algorithm with gaussian kernel
