Table 9 CEC 2020 benchmark functions.

From: Improved optimization based on parrot’s chaotic optimizer for solving complex problems in engineering and medical image segmentation

No

Functions

Best

Range

CEC20_F1

Shifted and Rotated Bent Cigar Function

100

\({\left[ { - 100,100} \right]^D}\,\,\) (D is the population dimension)

CEC20_F2

Shifted and Rotated Schwefel’s Function

Shifted and Rotated Lunacek bi-Rastrigin Function

Expanded Rosenbrock’s Plus Griewangk’s Function

1100

CEC20_F3

700

CEC20_F4

1900

CEC20_F5

Hybrid Function 1(N = 3)

Hybrid Function 2 (N = 4)

Hybrid Function 3 (N = 5)

1700

CEC20_F6

1600

CEC20_F7

2100

CEC20_F8

Composition Function 1 (N = 3)

Composition Function 2 (N = 4)

Composition Function 3 (N = 5)

2200

CEC20_F9

2400

CEC20_F10

2500