sentence: Also , five other metrics are used for the evaluation , including Accuracy ( Acc ) , Sensitivity ( Sen ) , Specificity ( Spe ) , Precision ( Pre ) , and Matthews Correlation Coefficient ( MCC ) , which are defined as 1Acc = TP + TNTP + FN + TN + FP 2Sen = TPTP + FN 3Spe = TNTN + FP 4Pre = TPTP + FP 5MCC = TP × TN − FP × FN ( TP + FN ) × ( TP + FP ) × ( TN + FN ) × ( TN + FP ) where TP , FP , TN , FN are the number of true positives , false positives , true negatives , and false negatives in the confusion matrix , respectively .