On the Investigation of Monthly River Flow Generation Complexity Using the Applicability of Machine Learning Models

Table 2

Model setting.

	Upper Zab	Lower Zab	Diyala
Function set
Addition	+	+	+
Subtraction	−	−	−
Multiplication	×	×	×
Division	÷	÷	÷
Power
General parameters
Population size	50	100	100
Genes per chromosomes	4	4	4
Gene head length	8	8	8
Fitness function	RRSE	RRSE	RRSE
Linking function	Addition	Addition	Addition
Genetic operators
Mutation rate	0.044	0.044	0.044
Inversion rate	0.1	0.1	0.1