Evaluating the AUC for an ROC curve (2004-07-27)

This page has moved to my new website.

Someone asked me where I got the following guidance for Area Under the Curve (AUC) for a Receiver Operating Characteristic (ROC) curve.

I cannot find where I got these numbers. It must be a sign of senility on my part. I'll keep looking, but if anyone else knows of justification for this or any other rule, let me know.

I did find a web page (gim.unmc.edu/dxtests/roc3.htm) that suggested this rule

but the evenness of the intervals strikes me as rather arbitrary. I'll keep looking.