AUC calculation
New Altair Community Member
Updated by Jocelyn
Hi,
i just wanted to ask why the implementors of the AUC calculation at first considered the trapeze and changed the implementation such that the trapeze is not considered any more. See below:
i just wanted to ask why the implementors of the AUC calculation at first considered the trapeze and changed the implementation such that the trapeze is not considered any more. See below:
Benedikt
package com.rapidminer.tools.math;
...
public class ROCDataGenerator implements Serializable {
...
public double calculateAUC(ROCData rocData) {
...
// if (last != null) {
// aucSum += ((tpDivP - last[1]) * (fpDivN - last[0]) / 2.0d) + (last[1] * (fpDivN - last[0]));
// }
// only rectangle
if (last != null) {
aucSum += last[1] * (fpDivN - last[0]);
}
...
}
...
}