An empirical study of sample size in ROC curve analysis of fingerprint data

Jin Chu Wu; Charles L. Wilson

doi:10.1117/12.665601

17 April 2006 An empirical study of sample size in ROC-curve analysis of fingerprint data

Jin Chu Wu, Charles L. Wilson

Proceedings Volume 6202, Biometric Technology for Human Identification III; 620207 (2006) https://doi.org/10.1117/12.665601
Event: Defense and Security Symposium, 2006, Orlando (Kissimmee), Florida, United States

Abstract

The fingerprint datasets in many cases may exceed millions of samples. Thus, the needed size of a biometric evaluation test sample is an important issue in terms of both efficiency and accuracy. In this article, an empirical study, namely, using Chebyshev's inequality in combination with simple random sampling, is applied to determine the sample size for biometric applications. No parametric model is assumed, since the underlying distribution functions of the similarity scores are unknown. The performance of fingerprint-image matcher is measured by a Receiver Operating Characteristic (ROC) curve. Both the area under an ROC curve and the True Accept Rate (TAR) at an operational False Accept Rate (FAR) are employed. The Chebyshev's greater-than-95% intervals of using these two criteria based on 500 Monte Carlo iterations are computed for different sample sizes as well as for both high- and low-quality fingerprint-image matchers. The stability of such Monte Carlo calculations with respect to the number of iterations is also explored. The choice of sample size depends on matchers' qualities as well as on which performance criterion is invoked. In general, for 6,000 match similarity scores, 50,000 to 70,000 scores randomly selected from 35,994,000 non-match similarity scores can ensure the accuracy with greater-than-95% probability.

Citation Download Citation

Jin Chu Wu and Charles L. Wilson "An empirical study of sample size in ROC-curve analysis of fingerprint data", Proc. SPIE 6202, Biometric Technology for Human Identification III, 620207 (17 April 2006); https://doi.org/10.1117/12.665601

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available