THRESHOLD INDEPENDENT EVALUATION
The Receiver Operating Characteristic (ROC) is used as threshold independent measure of performance. It is obtained by plotting the sensitivity values (true positive fraction) against the "1 - specificity" values (false positive fraction) for various thresholds. The area under the curve i.e. the ROC function is usually taken to be an important index because it provides a single measure of predcitive performance that is independent of threshold [].
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