Bacterial Foraging Optimization Based on Self-Adaptive Chemotaxis Strategy

Table 7

All best results, worst results, and variance (dimension = 50) (italics is the worst; bold is the best).

Function		BFO	PSO	CEBFO	MBFO	SCBFO
Sphere	Var	1.8168e − 02	9.6163e − 01	4.0667e − 07	7.9810e − 05	3.1818e − 09
	Max	1.5580e + 00	4.7097e + 00	4.3795e − 03	6.6067e − 02	3.5465e − 04
	Min	7.7258e − 01	3.4255e − 05	1.3526e − 03	1.9721e − 02	1.0572e − 07
Schwefel	Var	1.6688e − 03	1.7598e − 01	6.9786e − 06	1.2129e − 04	6.8157e − 07
	Max	8.2152e − 01	2.3245e + 00	2.3840e − 02	1.4782e − 01	7.1639e − 03
	Min	5.9840e − 01	3.1871e − 03	9.3401e − 03	9.7139e − 02	2.9258e − 03
Rosenbrock	Var	5.8421e − 01	2.9041e + 06	3.0092e − 01	9.1829e − 02	6.5959e − 02
	Max	4.9550e + 01	1.5035e + 04	4.4896e + 01	4.8183e + 01	4.5619e + 01
	Min	4.8350e + 01	4.9573e − 04	4.2292e + 01	4.6823e + 01	4.0341e + 01
H-C elliptic	Var	1.7698e + 07	1.4887e + 08	2.4810e − 04	1.4062e + 05	2.8406e − 06
	Max	3.2909e + 04	6.4013e + 04	9.1198e − 02	2.6512e + 03	8.9012e − 03
	Min	1.3529e + 04	9.5535e − 02	1.4314e − 02	7.1351e + 02	9.2632e − 04
Dixon-Price	Var	1.3027e − 03	7.1421e − 05	1.4317e − 08	4.5475e − 06	1.7083e − 10
	Max	1.0468e + 00	6.6674e − 01	6.6744e − 01	6.8667e − 01	2.9926e − 01
	Min	8.6503e − 01	6.6669e − 01	6.6683e − 01	6.7661e − 01	2.0882e − 01
Ackley	Var	2.0700e − 05	1.1686e − 02	1.2173e − 07	1.2746e − 06	1.3719e − 08
	Max	8.7222e − 02	4.5927e − 01	3.7252e − 03	1.4666e − 02	1.1020e − 03
	Min	6.2410e − 02	3.3865e − 04	1.6901e − 03	7.7651e − 03	5.2645e − 04
Rastrigin	Var	5.9407e − 02	6.2404e + 00	1.9758e − 06	2.5533e − 04	1.8916e − 08
	Max	2.9923e + 00	1.7757e + 01	8.3655e − 03	1.5550e − 01	7.3435e − 04
	Min	1.6563e + 00	1.2970e − 04	1.4597e − 03	4.1051e − 02	1.0689e − 04
Griewank	Var	2.5248e − 05	1.0517e − 01	1.9018e − 10	1.2555e − 07	1.4983e − 12
	Max	5.8761e − 02	1.0910e + 00	8.2053e − 05	2.9404e − 03	7.6257e − 06
	Min	3.7490e − 02	3.2241e − 05	1.4332e − 05	9.6940e − 04	6.6235e − 07
Levy	Var	1.8155e − 01	5.1672e + 00	2.2766e − 01	1.5822e − 01	9.1610e − 03
	Max	4.3065e + 00	2.1043e + 01	4.3936e + 00	4.3933e + 00	3.4090e + 00
	Min	3.7667e + 00	2.0733e + 00	2.0732e + 00	1.7975e + 00	7.0299e − 01
HappyCat	Var	2.5977e − 04	1.3614e − 02	1.3554e − 02	1.3337e − 02	8.3045e − 03
	Max	2.4948e + 00	1.1517e + 00	1.1308e + 00	9.6111e − 01	7.5124e − 01
	Min	2.4106e + 00	4.9291e − 01	5.1663e − 01	4.3305e − 01	1.6869e − 01