COD Optimization Prediction Model Based on CAWOA-ELM in Water Ecological Environment

Table 1

Simulation results.

Function	Indicators	WOA	PSO	BBO	CAWOA-ELM
f1	BV	1.391E − 65	5.352E − 55	1.127 × E − 45	1.987E − 167
	WV	4.117E − 49	4.961E − 39	5.238 × E − 34	2.343E − 89
	MV	2.106E − 55	9.871E − 47	2.921 × E − 39	4.782 × E − 107
	SD	9.109E − 57	6.431E − 49	9.302 × E − 41	1.412 × E − 124
	SR	10%	10%	16.67%	3.33%
f2	BV	3.345E − 75	3.522E − 65	3.342 × E − 42	0
	WV	5.727E − 62	1.719E − 51	7.231 × E − 31	0
	MV	8.234E − 68	3.371E − 58	8.823 × E − 35	0
	SD	6.349E − 70	8.569E − 62	7.467 × E − 36	0
	SR	13.33%	10%	13.33%	0
f3	BV	8.881E − 18	5.169E − 37	1.122 × E − 31	7.387E − 197
	WV	7.991E − 16	5.387E − 27	3.378 × E − 23	2.343E − 78
	MV	5.442E − 17	9.871E − 30	2.278 × E − 28	4.78 × E − 116
	SD	2.833E − 17	6.431E − 32	9.976 × E − 29	1.42 × E − 135
	SR	13.33%	13.33%	16.67%	3.33%
f4	BV	3.764E − 23	7.654E − 39	2.138 × E − 37	0
	WV	7.761E − 17	8.659E − 26	3.891 × E − 28	0
	MV	5.581E − 20	9.871E − 47	5.892 × E − 32	0
	SD	8.874E − 21	6.431E − 49	7.319 × E − 35	0
	SR	13.33%	13.33%	10%	0