Table 2 Specifics of the 10 CEC 2019 functions.

\(\begin{array}{l}{f}_{21}\\ \end{array}\)

Storn's Chebyshev polynomial fitting problem

1

9

[\(-\mathrm{8,192},\mathrm{ 8,192}]\)

\(\begin{array}{l}{f}_{22}\\ \end{array}\)

Inverse Hilbert matrix problem

1

16

[\(-\mathrm{16,384},\mathrm{ 16,384}]\)

\(\begin{array}{l}{f}_{23}\\ \end{array}\)

Lennard-Jones minimum energy cluster

1

18

\([-\mathrm{4,4}]\)

\(\begin{array}{l}{f}_{24}\\ \end{array}\)

Rastrigin's function

1

10

\([-\mathrm{100,100}]\)

\(\begin{array}{l}{f}_{25}\\ \end{array}\)

Griewank's function

1

10

\([-\mathrm{100,100}]\)

\(\begin{array}{l}{f}_{26}\\ \end{array}\)

Weierstrass function

1

10

\([-\mathrm{100,100}]\)

\(\begin{array}{l}{f}_{27}\\ \end{array}\)

Modified Schwefel’s function

1

10

\([-\mathrm{100,100}]\)

\(\begin{array}{l}{f}_{28}\\ \end{array}\)

Expanded Schaffer’s F6 function

1

10

\([-\mathrm{100,100}]\)

\(\begin{array}{l}{f}_{29}\\ \end{array}\)

Happy Cat function

1

10

\([-\mathrm{100,100}]\)

\(\begin{array}{l}{f}_{30}\\ \end{array}\)

Ackley function

1

10

\([-\mathrm{100,100}]\)