AUC By Hand

AUC By Hand

John B. John B.

John B.

Big Data Solutions | Predictive Analytics | Data Strategy | Process Automation | Team Leadership | Business Intelligence | Veteran

发布日期: 2022年9月15日
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Calculating the area under a curve by hand never really appealed to me. R and Python did the trick nicely. Unfortunately, in a recent Biostatistics class, I had to calculate it by hand. Luckily, it was a rather simple receiver operator curve (ROC) that consisted of just five points. I would not want to do this for more than 10 points.

In R, as part of the caTools package trapz() works very nicely. I utilized this to submit my answer and I was asked to show my work. So the above graphic, simple in nature is what I used. So what is the formula, well its the area of a triangle plus the area of trapezoid for each subsequent point. You the typed formula in the cover photo.

For a complete story on how I got to above ROC, head on over to Medium.

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