Improved Sparrow Search Algorithm Based on Iterative Local Search

Table 2

Comparison of three kinds of reverse learning.

	Boundary	Focusing ability (k)	Reverse solution position	Effect
Reverse learning	Unchanged	1	On boundary midpoint symmetry	Accelerating convergence
Lens imaging learning	Dynamic change according to the maximum and minimum of individual position of population	A large constant, which is more than 1	About boundary midpoint reduction imaging	Accelerating convergence
Dimension by dimension lens imaging learning	The maximum and minimum values of each dimension change dynamically according to the individual position of the population	According to the dynamic change of iteration times, the first and middle stages are less than 1, and the later stage is more than 1	In the early and middle stages, the image is enlarged at the midpoint of the boundary, and in the later stage, the image is smaller	Jump out of the local optimum in the first and middle stage and accelerate the convergence in the later stage