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Recognition Problem in Biometric Data Studies: Nonparametric Dependence Characteristics and Aggregated Algorithms



Andrew L. Rukhin


Biometric systems designed to detect or verify a persons identity are widely used in homeland security. A variety of commercially available biometric systems are now in existence; current technological progress makes it possible to evaluate these systems consistently and comprehensively. Recognition or identification problem of biometrics is important for such evaluations. In identification systems, a biometric signature of an unknown person, a probe, is presented to a system, which compares the new signature with a database of biometric signatures of known individuals. On the basis of this comparison, the system reports the similarity scores of the probe to the signatures in this database, called the gallery. The gallery items are then ranked accordingly to their similarity scores of the probe; the top matches with highest similarity scores are expected to contain the true identity. This work addresses two following issues: how to compare algorithms on the basis of their similarity scores for face recognition and how to combine different algorithms. An example from the FERET (Face Recognition Technology) program with four face recognition algorithms is examined.
Statistical Methods in Counter-Terrorism


Aggregated algorithm, Copula, Correlation, Gallery, Metrics on permutations, Probe, Permutation matrix, Similarity score


Rukhin, A. (2006), Recognition Problem in Biometric Data Studies: Nonparametric Dependence Characteristics and Aggregated Algorithms, Statistical Methods in Counter-Terrorism, [online], (Accessed May 20, 2024)


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Created September 14, 2006, Updated January 27, 2020