Research Article
Hybrid Biogeography Based Optimization for Constrained Numerical and Engineering Optimization
Table 4
Statistic results for four engineering optimization problems solved by HBBO.
| Engineering optimization problem | Best | Mean | Median | Worst | SD | FFEs |
| Welded beam design | 1.724852309 | 1.724852309 | 1.724852309 | 1.724852309 | | 25,050 | Tension/compression spring design | 0.012665233 | 0.012665393 | 0.012665234 | 0.012666698 | | 43,800 | Speed reducer design | 2996.348165 | 2996.348165 | 2996.348165 | 2996.348165 | | 25,100 | Three-bar truss design | 263.89584338 | 263.89584338 | 263.89584338 | 263.89584338 | | 7,550 |
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