wherein {HEAD ~ the similarity measurement} for {TAIL ~ an ith speaker identity candidate} is a dot product defined as: 
for
wherein { HEAD ~ the similarity measurement } for { TAIL ~ an ith speaker identity candidate } is a dot product defined as :
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH