Efficacious End User Measures—Part 1: Relative Class Size and End User Problem Domains

Table 15

A normalized JPT has class sizes adjusted to one. The four classification categories are expressed as proportions of the test set class of which they are actually members.

Source population
		𝑌	𝑌
Test result	Positive	TPR	FPR
	Negative	FPR = 1 − TPR	TNR = 1 − FPR
	Totals	1	1	2