A Kriging Model-Based Expensive Multiobjective Optimization Algorithm Using R2 Indicator of Expectation Improvement

Table 5

The mean and standard deviation of the NR value of approximated Pareto set found by ParEGO, MaxMin, and EIR2-EMOA on all test functions.

	ParEGO		MaxMin		EIR2
	Mean	Std	Mean	Std	Mean	Std
TEST1	0.6689	5.78E − 02	0.8711	2.52E − 02	0.8644	2.86E − 02
TEST2	0.2883	2.95E − 02	0.6183	2.66E − 02	0.6017	2.54E − 02
FON	0.1867	4.50E − 02	0.4200	3.22E − 02	0.4367	7.33E − 02
ZDT1	0.2611	1.76E − 02	0.2556	3.19E − 02	0.4522	3.31E − 02
ZDT2	0.2478	6.87E − 02	0.2033	2.10E − 02	0.4311	3.77E − 02
ZDT3	0.1242	2.17E − 02	0.1283	1.77E − 02	0.2958	2.95E − 02
DTLZ2	0.2752	1.81E − 02	0.2733	2.49E − 02	0.4381	2.00E − 02
DTLZ5	0.1652	1.27E − 02	0.1262	1.64E − 02	0.3529	1.09E − 02
DTLZ7	0.1924	2.43E − 02	0.3686	6.87E − 02	0.5438	2.53E − 02