Tiers & Thresholds
Tiers and Thresholds are terms used to classify the degree to which an existing biometric template matches a currently captured one. Thus, this terms are used for Identification and Verification workflows.
The Threshold is a project configuration done in Simprints ID servers, and can be adjusted to affect the outcome of the resulting matched beneficiaries. Thus Simprints ID uses the specified Thresholds to determine if a potential matching biometric record is worthy of being added to the candidate list. For more information on Tiers and Thresholds, have a look at the IDb4Enrol section here.
The Tier is an enum with 5 values indicating the rankings, and can be accessed using the getTier method of the Identification or Verification objects.
public enum Tier {
TIER_1, // Almost certain match (the biometrics are very similar)
TIER_2, // Very good match
TIER_3, // Good match
TIER_4, // Okay match
TIER_5, // No match (the biometrics are very different)
}
// accessing the value
Tier tier = identification.getTier()