maybe extra visualization precision/recall

[damian0604]

by dmitry:

I think it would be really helpful to illustrate your description of confusion matrices and the concepts of precision, recall, and accuracy with either a circular diagram like the one you used in the slides, or a table like this:
https://2.bp.blogspot.com/-EvSXDotTOwc/XMfeOGZ-CVI/AAAAAAAAEiE/oePFfvhfOQM11dgRn9FkPxlegCXbgOF4QCLcBGAs/s1600/confusionMatrxiUpdated.jpg
I
found the latter illustration particularly helpful, as it includes all of those concepts, and neatly shows how they correspond to the Type I and Type II errors in traditional statistics.