Reliability Analysis of Structures by Iterative Improved Ensemble of Surrogate Method

Table 4

The mean and the coefficient of variation () of RMSE errors using different metamodels for different problems.

	Numerical Example 1	Numerical Example 2	Numerical Example 3	Stiffened plate element problems
Krg-con	16.0254 (0.1712)	26.0915 (0.1553)	1.3606 (0.1816)	3.9573 (0.0913)
Krg-lin	16.0601 (0.2042)	27.0418 (0.1246)	1.2540 (0.1715)	4.1229 (0.0514)
krg-qua	19.9411 (0.1450)	23.7087 (0.1366)	1.2622 (0.1802)	4.3224 (0.0830)
EH	15.8835 (0.1489)	23.6902 (0.1237)	1.2511 (0.1451)	3.9136 (0.0508)
EM	15.0233 (0.1563)	23.4337 (0.1209)	1.1114 (0.1715)	3.9190 (0.0804)
ER	13.5372 (0.1513)	23.1461 (0.1175)	1.1496 (0.1542)	3.9224 (0.0559)
ERR	12.9343 (0.1177)	22.4847 (0.0878)	1.1159 (0.12590)	3.8767 (0.0546)