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Table 2 Comparison of model identification results

From: Elastic–plastic model identification for rock surrounding an underground excavation based on immunized genetic algorithm

  E/MPa μ α K/MPa
Theory values 2157 0.2 0.165872 0.875726
Identified values by GA 2135 0.182 0.171365 0.853471
Relative error of computing results for GA (%) 1.02 9 3.31 2.54
Identified values by FGA 2140 0.182 0.168442 0.853532
Relative error of computing results for FGA (%) 0.79 9 1.55 2.54
Identified values by IGA 2143 0.188 0.167812 0.854621
Relative error of computing results for IGA (%) 0.65 6 1.17 2.41