An Enhanced Differential Evolution Algorithm Based on Multiple Mutation Strategies

Table 4

Comparison between EDE and other two ABCs over 30 independent runs on the 21 test functions with in terms of mean and standard deviation.

Number		ABC	MABC	EDE
				—

Bold entities mean the best results.
Here “a” means that the results obtained by EDE are set to zero on the function when the results are less than . This is the reason that the coefficient with low precision in function may result in the negative results. As a matter of fact, the results should be zero.