Table 18 Statistical results for speed reducer design problem using CI–SAPF, CI–SAPF–CBO and CBO

From: Cohort intelligence with self-adaptive penalty function approach hybridized with colliding bodies optimization algorithm for discrete and mixed variable constrained problems

Results CI–SAPF CI–SAPF–CBO CBO
Best 2817.09 2816.34 2840.44
Mean 2820.32 2817.65 3534.00
Worst 2825.87 2819.57 3582.75
Std. Dev 2.06 1.03 264.39
Avg. CPU time \((sec)\) 2.25 1.02 0.30
Avg. function evaluations 14,420 7597 613