Probe match scores are clustered, and {HEAD ~ templates} that correspond to clusters having top M probe match scores are compared with {TAIL ~ the prototypes} to obtain template prototype match scores 
are compared with
Probe match scores are clustered , and { HEAD ~ templates } that correspond to clusters having top M probe match scores are compared with { TAIL ~ the prototypes } to obtain template prototype match scores
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH