An Alternative Approach of Dual Response Surface Optimization Based on Penalty Function Method

Table 1

Estimated bias, standard error (SE), and RMSE of the optimal mean response.

Methods	500 iterations			1000 iterations			2000 iterations
	Bias	SE	RMSE	Bias	SE	RMSE	Bias	SE	RMSE
VM	0.84	4.38	4.46	1.30	4.41	4.52	0.96	4.53	4.64
LT	1.03	3.75	3.97	1.46	3.73	4.01	1.48	3.82	4.10
WMSE	1.32	3.82	4.04	1.47	3.78	4.06	1.50	3.87	4.14
PM	0.07	0.22	0.22	0.07	0.23	0.24	0.07	0.22	0.24