Table 4.

A matrix of cases showing relationships between the values of the functions f(δ), f(λ) and the classification models, with a particular focus on the logit for predicting activated sludge bulking.

δ/λ		0	1/3	1/3	1/3 (2/3)	2/3	2/3	3/3
	f(δ)/f(λ)	0	1/6	2/6	3/6	4/6	5/6	6/6
0	0	X	BT	BT	BT	BT	BT	BT
1/3	1/6	RF	BT	RF	RF	RF	RF	BT
1/3	2/6	BT	MLP	BT	BT	BT	BT	BT
1/3(2/3)	3/6	LRVG	LRVG	LRVG	LRVG	LRVG	LRVG	LRVG
2/3	4/6	LRVG	LREX	LREX	LREX	LREX	LREX	LREX
2/3	5/6	SVM	LRVG	LRVG	LRVG	LRVG	LRVG	LREX
3/3	6/6	LRVG	SVM	MLP	BT	SVM	LREX	LREX

where: VG—the logit model, where SPEC, SENS >0.8, EX—the logit model, where SPEC, SENS >0.9.