Information Technology Reference
In-Depth Information
Gene 1: *+x*++?x?x?x?1600254
C
1
:
{1.34436, 1.717926, 1.794709, 0.980042, 1.351318,
1.551117, 0.453125, 1.718384, 1.597992, 1.111602}
Gene 2: *x?//?xx?x?x?0172474
C
2
:
{0.378906, 0.76178, 0.437958, 1.168029, 0.307495,
1.176086, 0.486938, 0.755036, 0.01184, 0.862946} (5.22a)
It has a fitness of 999.971 an R-square equal to 0.99999999999547 and,
therefore, is an almost perfect match to the target function (5.1). Indeed, as
Table 5.11
Settings for the simple polynomial function with rational coefficients.
Number of runs
100
Number of generations
1000
Population size
50
Number of fitness cases
10 (Table 5.2)
Function set
+ - * /
Terminal set
x ?
Random constants array length
10
Random constants type
Rational
Random constants range
[0, 2]
Head length
6
Gene length
20
Number of genes
2
Linking function
+
Chromosome length
40
Mutation rate
0.044
Inversion rate
0.1
IS transposition rate
0.1
RIS transposition rate
0.1
One-point recombination rate
0.3
Two-point recombination rate
0.3
Gene recombination rate
0.3
Gene transposition rate
0.1
Dc-specific mutation rate
0.044
Dc-specific inversion rate
0.1
Dc-specific transposition rate
0.1
Random constants mutation rate
0.01
Fitness function
Equation (3.3b)
Selection range
100%
Precision
0.0%
Average best-of-run fitness
993.270
Average best-of-run R-square
0.9999984024
