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A Biometric Menagerie Index for Characterising Template/Model-Specific Variation

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Executive Summary

An important phenomenon influencing the performance of a biometric experiment, attributed to Doddington et al (1998), is that the match scores (whether under genuine or impostor matching) are strongly dependent on the model or template from which the match scores have been derived. Although there exist studies to classify the characteristic of the template/ model, as well as the query data, into animal names such as sheep, goats, wolves and lambs - so-called Doddington's menagerie, or higher semantic categories considering simultaneously both genuine and impostor match scores, due to Yager and Dunstone (2008), there is currently absence of means to characterise the extent of Doddington's menagerie.

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