3.1.4 Sensitivity, Specificity, J Coefficient
El-Emam et al. [11] proposed the usage of the J parameter to measure the
accuracy of binary classifiers in software engineering. The J coefficient was first
used in medical research [41]; it is calculated by using sensitivity and specificity
parameters. El-Emam et al. [12] used the J coefficient for performance evaluation
of algorithms. Sensitivity, specificity, and the J parameter are calculated by using
Formulas 9, 10, and 11 respectively.