where {HEAD ~ the sum} is taken over all the templates in the biometric corpus, tmsit is {TAIL ~ a template match score} between the ith speaker identity candidate and a tth template, and pmst is a probe match score for the tth template 
where { HEAD ~ the sum } is taken over all the templates in the biometric corpus , tmsit is { TAIL ~ a template match score } between the ith speaker identity candidate and a tth template , and pmst is a probe match score for the tth template
OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH