Terms and definitions (V)


Valley bifurcation
The point at which a valley splits into two or two separate valleys merge into one.

A measure of the dispersion of a statistical distribution.

A process in which a user-submitted sample is compared with a template registered in the database, while the attributes of the sample submitted by the user are compared with the registered template and, based on the results of the comparison, a positive or negative decision on the requested identity is returned.

Verification attempt
A biometric statement and an attempt (attempts) to collect biometric data, which together constitute input data for comparison(s).

Verification decision
Decision on the possible credibility of the user claim that he is the source of a particular template in the system database.

Confirmation of a biometric application through comparison.

Verification transaction
One or more biometric verification attempts that result in a biometric statement