In step 702, the process randomly selects K clusters of probe match scores 110, averages {HEAD ~ probe match scores} within {TAIL ~ each} of the clusters to obtain a mean as a center, and goes to step 704 
In step 702 , the process randomly selects K clusters of probe match scores 110 , averages { HEAD ~ probe match scores } within { TAIL ~ each } of the clusters to obtain a mean as a center , and goes to step 704
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH