Added specificity to the ClassificationMetrics

stacs-srg · Aug 25, 2022 · c118ccb · c118ccb
1 parent 9cea2d6
commit c118ccb
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/src/main/java/uk/ac/standrews/cs/utilities/ClassificationMetrics.java b/src/main/java/uk/ac/standrews/cs/utilities/ClassificationMetrics.java
@@ -49,4 +49,9 @@ public static double F1(long true_positives, long false_positives, long false_ne
         final long denominator = true_positives * 2 + false_positives + false_negatives;
         return denominator == 0 ? 0.0 : (double) (true_positives * 2) / denominator;
     }
+
+    // Specificity is ( TN / ( TN + FP )
+    public static double specificity(long true_negatives, long false_positives) {
+        return ((double) true_negatives) / ( true_negatives + false_positives );
+    }
 }