何为Equal Error Rate(EER)

近日在读关于生物特征认证的一篇论文中多次提到了Equal Error Rate(EER)即等误差率，遂在网上查到了关于它的解释。

Equal error rate (EER) is a biometric security system algorithm used to predetermines the threshold values for its false acceptance rate and its false rejection rate. When the rates are equal, the common value is referred to as the equal error rate. The value indicates that the proportion of false acceptances is equal to the proportion of false rejections. The lower the equal error rate value, the higher the accuracy of the biometric system.（https://www.webopedia.com/TERM/E/equal_error_rate.html）
等误差率一种生物特征安全系统算法，用来提前确定该系统的的错误接受率和错误拒绝率的阈值。当这两种比率相等时，这个共同的比率值就被称做等误差率。这个值就是错误接受率和错误拒绝率相等时的值。这个值越低则表明这个生物特征安全系统越精确。