  In search for the possible astrophysical sources behind origination of the
diverse gamma-ray bursts, cluster analyses are performed to find homogeneous
groups, which discover an intermediate group other than the conventional short
and long bursts. However, very recently, few studies indicate a possibility of
the existence of more than three (namely five) groups. Therefore, in this
paper, fuzzy clustering is conducted on the gamma-ray bursts from the final
'Burst and Transient Source Experiment' catalog to cross-check the significance
of these new groups. Meticulous study on individual bursts based on their
memberships in the fuzzy clusters confirms the previously well-known three
groups against the newly found five.
