An Improved Teaching-Learning-Based Optimization with Differential Learning and Its Application

Table 4

Statistical data for stop band attenuation, MSE, and CPU times for 8th order IIR filters.

Type of filter	Algorithm	Maximum gain (dB)	Mean gain (dB)	MSE	-stat	value	-value	Time (s)
Low-pass (LP)	GA	28.13	40.37		13.60792		2.093024
	PSOwFIPS	30.22	43.51		5.14552		2.093024
	SaDE	31.43	48.23		1.31278		2.093024
	TLBO	28.74	41.18		3.03097		2.093024
	DLTLBO	26.21	38.37		—	—	—
High-pass (HP)	GA	16.85	28.28		12.53964		2.09302
	PSOwFIPS	20.16	32.46		8.96138		2.09302
	SaDE	28.49	38.72		2.64240		2.09302
	TLBO	25.39	35.37		5.73652		2.09302
	DLTLBO	35.28	43.51		—	—	—
Band-pass (BP)	GA	24.60	37.28		7.12807		2.09302
	PSOwFIPS	24.23	36.84		3.50304		2.09302
	SaDE	29.73	42.19				2.09302
	TLBO	25.91	39.52		2.80619		2.09302
	DLTLBO	27.90	40.27		—	—	—
Band-stop (BS)	GA	16.24	28.31		10.51046		2.09302
	PSOwFIPS	17.75	30.28		6.70940		2.09302
	SaDE	21.17	35.22		2.44724		2.09302
	TLBO	14.01	26.25		3.56938		2.09302
	DLTLBO	36.07	46.27		—	—	—