Fruit Fly Optimization Algorithm Based on Single-Gene Mutation for High-Dimensional Unconstrained Optimization Problems

Table 1

Test function.

Function	Expression	Definition domain
f1		[−30, 30]	0
f2		[−100, 100]	0
f3		[−32, 32]	0
f4		[−10, 10]	0
f5		[−600, 600]	0
f6		[−5.12, 5.12]	0

Functions f1 and f2 are unimodal. Function f1 is the Rosenbrock function, also referred to as the valley or banana function. Its global minimum lies in a narrow, parabolic valley. Function f2 is the sphere function, also referred to as the harmonic function with the only global minimum. Functions f3–f6 are, respectively, Ackley, Alpine, Griewank, and Rastrigin function. They are multimodal, and each of them has a large number of local minima and is difficult to be optimized.