  Various methods of identification of single events in the HPGe detector are
compared on the basis of a program especially designed to simulate pulse shape
in a semi-conductor germanium detector. Capabilities of three following methods
are shown: (1) an application of the library of single pulse shapes, (2) the
single-parameter method, and (3) a separation on the basis of artificial neural
networks. The analysis was done in the context of an application of all
above-mentioned techniques in the energy interval around the expected neutrino
less double beta decay of Ge-76 in the Heidelberg-Moscow experiment.
