Crossover Error Rates
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to perform a quantitative comparison of different biometric solutions, applications or devices.more terms and definitions Sponsors Biometrics About equal error rate roc biometrics Performance indicators Biometric applications Glossary Biometric Solutions Fingerprint Recognition Face Recognition Speaker Recognition Iris Recognition Keystroke Dynamics Biometric Devices Fingerprint Reader Biometric Software Reviews This Website Contact Terms and Conditions © 2010-2015 CORELAS BVBA VAT ID - BTW BE 0818.426.711 By using this website you are indicatingyour acceptance of our Terms and Conditions.
to perform a quantitative comparison of different biometric solutions, applications or devices.more terms and definitions Sponsors Biometrics About http://www.biometric-solutions.com/glossary.php?term=Crossover%20Error%20Rate biometrics Performance indicators Biometric applications Glossary Biometric Solutions Fingerprint Recognition Face Recognition Speaker Recognition Iris Recognition Keystroke Dynamics Biometric Devices Fingerprint Reader Biometric Software Reviews This Website Contact Terms and Conditions © 2010-2015 CORELAS BVBA VAT ID - BTW BE 0818.426.711 By using this website you are indicatingyour acceptance of our Terms and Conditions.
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Upload Documents Write Course Advice Refer your Friends Earn Money Upload Documents Apply for Scholarship Create Q&A pairs Become a Tutor Find Study Resources by School by Literature Guides by Subject Get Instant Tutoring Help Ask a Tutor a Question Use Flashcards View Flashcards Create Flashcards Earn by Contributing Earn Free AccessLearn More > Upload Documents Write Course Advice Refer your Friends Earn MoneyLearn More > Upload Documents Apply for Scholarship Create Q&A pairs Become a Tutor Are you an educator? Log in Sign up Home American Public University INFORMATIO INFORMATIO ISSC 364 Ballad_2011_Ch09 Crossover error rate the crossover error rate cer is SCHOOL American Public University COURSE TITLE INFORMATIO ISSC 364 TYPE Notes UPLOADED BY Huzul PAGES 24 Click to edit the document details This preview shows pages 11–13. Sign up to view the full content. View Full Document Crossover Error Rate The crossover error rate (CER) is the point at which Type I errors and Type II errors are equal, as shown in Figure 9-2. All biometric systems can be calibrated to reduce either the false acceptance or false rejection rates to near zero. Unfortunately, calibrating the system to reduce or eliminate Type I errors generally raises the rate of Type II errors. A biometric system could be calibrated such that the sensitivity is turned all the way down, so that it accepts everyone. Of course, this would produce a large number of false positives, but zero false negatives. Likewise, the sensitivity could be turned all the way up so that the system doesn’t accept anyone, eliminating the false positives but producing a large number of false negatives. The CER is an accurate way to compare the real accuracy of various biometric systems. The smaller the CER, the more accurate it is. In other words, a system with a CER of 3 percent is more accurate than one with a CER of 5 percent. Failure to Enroll Rate All biometric systems require subjects to enroll, or present sample data, before they can use the system. As with any system, things do not always work the way they should and the sample data can be lost. The percentage of failed attempts to create a sample data set for an individual, divided by the total number of attempts to enroll users is called the