Multiobjective Design Optimization of Grillage Systems according to LRFD-AISC

Table 2

Values of measurement quantities obtained by “Eval. Number = 1,000” and “Pop. Size = 50” for design example 1.

C. no.	IGD				HV				Spread
	AbYSS	NSGAII	PESAII	SPEAII	AbYSS	NSGAII	PESAII	SPEAII	AbYSS	NSGAII	PESAII	SPEAII
	Means
1	0.1869	0.2575	0.1299	0.1067	0.5402	0.2284	0.7833	0.6032	0.9089	0.9995	0.9575	0.9875
2	0.2760	0.2543	0.1622	0.0844	0.6963	0.8968	0.1139	0.5999	0.9624	0.9810	0.9993	0.9737
3	0.1626	0.2435	0.1656	0.2599	0.5197	0.2754	0.8486	0.4484	0.9639	0.9562	0.9359	0.9723
4	0.1190	0.1966	0.2630	0.1818	0.8900	0.2818	0.4662	0.5138	0.9689	0.9790	0.9621	0.9852
5	0.0358	0.2511	0.0838	0.2638	0.3302	0.8801	0.3257	0.4077	0.9541	0.9508	0.9403	0.9922
6	0.2551	0.0428	0.2290	0.1455	0.2297	0.4443	0.6302	0.1080	0.9150	0.9917	0.9912	0.9954
7	0.1386	0.0759	0.1524	0.0459	0.9045	0.9045	0.8787	0.9045	0.9636	0.9501	0.9563	0.9458
8	0.1493	0.0540	0.0301	0.1450	0.3109	0.6033	0.5799	0.9206	0.9173	0.9883	0.9635	0.9620
	Standard deviations corresponding to best means and assessment of significance levels according to statistical tests
	0.0018	0.0011	0.0051	0.0019	0.0022	0.0048	0.0064	0.0013	0.0051	0.0109	0.0103	0.0066
	(−)				(−)				(−)