Research Article

Adaptive Weighted Strategy Based Integrated Surrogate Models for Multiobjective Evolutionary Algorithm

Table 4

Comparison of inverted generational distance (IGD) for different algorithms.

ProblemsParEGOMOEA/D-EGOK-RVEASMS-EGOCSEAProposed

ZDT14.7243e − 1 (2.08e − 1)−1.7097e + 0 (3.74e + 0)−8.2035e − 1 (1.15e − 1)−3.7101e + 0 (3.14e + 0)−8.2035e − 1 (2.14e − 1)−6.2887e − 2 (2.73e − 2)
ZDT25.9465e − 1 (1.43e − 1)−1.3118e + 0 (1.55e + 0)−7.4677e − 1 (1.37e − 1)−2.3611e + 0 (1.54e + 0)−7.41257e − 1 (1.20e − 1)−1.1052e − 1 (1.07e − 1)
ZDT3536781e − 1 (1.61e − 1)−1.4879e + 0 (1.73e + 0)−8.1794e − 1 (1.59e − 1)−3.4209e + 0 (1.63e + 0)−8.17078e − 1 (1.60e − 1)−1.9822e − 1 (1.88e − 1)
ZDT48.5326e + 1 (1.37e + 1)−1.0688e + 2 (1.28e + 1)−7.3940e + 1 (2.27e + 1)−1.0711e + 2 (1.30e + 1)−7.7943e + 1 (1.25e + 1)−6.3493e + 1 (1.78e + 1)
ZDT56.4443e + 0 (8.96e − 1)−6.2323e + 0 (1.99e + 0)−5.4347e + 0 (2.27e + 0)−5.2085e + 0 (1.87e + 0)−5.8307e + 0 (2.17e + 0)−3.2883e + 0 (8.31e − 1)
ZDT68.9775e + 1 (2.24e + 1)−8.7589e + 1 (1.64e + 1)−7.6495e + 1 (1.87e + 1)−6.7327e + 1 (1.65e + 1)−7.6085e + 1 (1.87e + 1)−5.4726e + 1 (1.71e + 1)
DTLZ12.6802e − 1 (2.14e − 2)−3.3203e − 1 (2.55e − 2)−1.8420e − 1 (1.88e − 2)−2.3251e − 1 (2.57e − 2)−1.0320e − 1 (1.18e − 2)−1.4977e − 1 (3.47e − 2)
DTLZ22.6622e + 2 (6.05e + 1)−2.1185e + 2 (4.05e + 1)−2.1205e + 2 (7.18e + 1)−4.0287e + 2 (4.11e + 1)−2.2505e + 2 (6.18e + 1)−1.3896c + 2 (2.36e + 1)
DTLZ34.1291e − 1 (1.12e − 1)−6.4259e − 1 (7.17e − 2)−3.622e − 1 (9.93e − 2)≈4.022e − 1 (7.07e − 2)−3.6171e − 1 (9.93e − 2)≈3.3670e − 1 (1.01e − 1)
DTLZ41.7326e − 1 (3.06e − 2)−2.5429e − 1 (3.03e − 2)−7.5002e − 2 (1.28e − 2)−1.5019e − 1 (2.83e − 2)−7.5662e − 2 (1.28e − 2)−2.5984e − 2 (6.28e − 3)
DTLZ54.1258e + 0 (4.68c − 1)−1.8576e + 0 (5.81e − 1)+3.8069c + 0 (4.72e − 1)−5.5814e + 0 (4.99e − 1)+2.8071c + 0 (4.72e − 1)≈2.7593e + 0 (4.34e − 1)
DTLZ63.3278e − 1 (6.28e − 2)−2.3411e − 1 (9.23e − 2)−1.0011e + 0 (1.10e − 1)−3.0452e − 1 (8.93e − 2)−1.8091e + 0 (1.10e − 2)≈1.7815e − 1 (3.03e − 2)
+/−/≈0/12/01/11/00/11/10/11/10/10/2