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Table 6 Results about four benchmark engineering design problems

From: Improved Differential Evolution with Shrinking Space Technique for Constrained Optimization

Engineering problems

Method

Best solution

f best

Mean solution

μ f

Worst solution

f worst

Standard deviation

σ f

Weld-beam design

ATMDE

2.380 956

2.380 956

2.380 956

5.88 × 10−11

AATM

2.382 326

2.386 976

2.391 592

2.20 × 10−3

Spring design

ATMDE

0.012 665

0.012 665

0.012 665

1.05 × 10−15

AATM

0.012 668

0.012 708

0.012 861 37

4.50 × 10−5

Speed reducer

ATMDE

2994.473 6

2994.474 4

2994.474 45

1.18 × 10−5

AATM

2994.516 7

2994.585 4

2994.659 79

3.30 × 10−2

Three-bar truss design

ATMDE

263.895 84

263.895 84

263.895 843

2.87 × 10−13

AATM

263.895 84

263.896 6

263.900 41

1.10 × 10−3