TABLE 4.

The true and estimated values of prevalence and c

Type	True value		Estimated value		Relative error (%)
	P(y = 1|x)	c	P(y = 1|x)	c	P(y = 1|x)	c
Spec1	0.1638	0.5498	0.1531	0.5664	−6.53	3.02
Spec2	0.3298	0.3775	0.3117	0.3908	−5.48	3.54
Spec3	0.4471	0.3091	0.4128	0.3263	−7.66	5.59
Spec4	0.0503	0.7991	0.0490	0.8032	−2.60	0.52
Spec5	0.7837	0.2033	0.7988	0.2002	1.93	−1.51
Urban	0.2292	0.4660	0.2275	0.4678	−0.74	0.39
Tree	0.2106	0.4871	0.2394	0.4552	13.68	−6.56
Grass	0.1880	0.5154	0.1839	0.5210	−2.18	1.08