End-Point Static Control of Basic Oxygen Furnace (BOF) Steelmaking Based on Wavelet Transform Weighted Twin Support Vector Regression

Table 5

Comparisons of four regression methods on Sinc functions with different noises.

Noise	Regressor	SSE	SSE/SST	SSR/SST	Time, s
Type A	WTWTSVR	0.1577±0.0099	0.0029±0.0018	0.9972±0.0264	1.7997
	TSVR	0.2316±0.1288	0.0043±0.0024	1.0050±0.0308	2.3815
	v-TSVR	0.4143±0.1261	0.0077±0.0023	0.9501±0.0270	1.7397
	Asy -TSVR	0.1742±0.1001	0.0032±0.0019	1.0021±0.0279	1.7866
	KNNWTSVR	0.2044±0.0383	0.0038±0.0007	1.0177±0.0202	3.5104
Type B	WTWTSVR	0.6659±0.2456	0.0124±0.0046	1.0161±0.0564	1.8053
	TSVR	0.8652±0.3006	0.0161±0.0056	1.0185±0.0615	2.3296
	-TSVR	0.8816±0.3937	0.0164±0.0073	0.9631±0.0548	1.8582
	Asy -TSVR	0.7900±0.2588	0.0147±0.0048	1.0168±0.0599	1.8450
	KNNWTSVR	0.6891±0.2571	0.0128±0.0048	0.9679±0.0392	3.6175
Type C	WTWTSVR	1.2425±0.1444	0.0231±0.0027	1.0228±0.0153	1.8010
	TSVR	1.2505±0.0650	0.0233±0.0012	1.0217±0.0091	2.3054
	-TSVR	1.5351±0.1172	0.0285±0.0022	0.9750±0.0111	1.7888
	Asy -TSVR	1.2464±0.0934	0.0232±0.0017	1.0256±0.0125	1.6888
	KNNWTSVR	2.2027±0.7245	0.0410±0.0135	1.0148±0.1556	4.1230
Type D	WTWTSVR	4.8557±0.4009	0.0903±0.0075	1.0768±0.0283	1.7803
	TSVR	5.0090±0.2172	0.0931±0.0040	1.0890±0.0131	2.2556
	-TSVR	5.2580±0.2935	0.0978±0.0055	1.0386±0.0125	1.7578
	Asy -TSVR	4.9659±0.2925	0.0923±0.0054	1.0889±0.0128	1.7441
	KNNWTSVR	4.9751±1.3262	0.0925±0.0274	1.0262±0.1538	4.4397