Table 7 Parameters setting for tuning the MGGP.

From: Formulation of low temperature mixed mode crack propagation behavior of crumb rubber modified HMA using artificial intelligence

Variable ID

Settings

Population size

100, 200, 500

Number of generations

100, 200, 500

Maximum number of genes allowed in an individual

1–3

Maximum tree depth

1–3

Tournament size

12

Elitism

0.01

Crossover events

0.85

High-level crossover

0.2

Low-level crossover

0.8

Mutation events

0.1

Sub-tree mutation

0.9

Function set

Exp, Cube,\(\sqrt {}\), \(\times\), \(+\), \(-\),\(/\)