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In-Depth Information
Table 6.2
Parameters for the sextic polynomial problem.
Number of generations
50
Population size
20
Number of fitness cases
10 (Table 6.1)
Function set of ADFs
+ - * /
Terminal set
a
Number of genes/ADFs
2
Head length
5
Gene length
11
Function set of homeotic genes
+ - * /
Terminal set of homeotic genes
ADFs 0-1
Number of homeotic genes/cells
2
Head length of homeotic genes
4
Length of homeotic genes
9
Chromosome length
40
Mutation rate
0.044
Inversion rate
0.1
RIS transposition rate
0.1
IS transposition rate
0.1
Two-point recombination rate
0.3
One-point recombination rate
0.3
Gene recombination rate
0.3
Gene transposition rate
0.1
Mutation rate in homeotic genes
0.044
Inversion rate in homeotic genes
0.1
RIS transposition rate in homeotic genes
0.1
IS transposition rate in homeotic genes
0.1
Selection range
100%
Precision
0.01%
The initial population of this run and the fitness of each individual in the
particular environment of Table 6.1 is shown below (the best cell is indicated
after the coma and “3” is used to flag unviable programs that return calcula-
tion errors):
Generation N: 0
0123456789001234567890012345678012345678
/*+/aaaaaaa/**/+aaaaaa/--/01100++-/11110,3-[ 0] = 0
*--*+aaaaaa++-a-aaaaaa/1-000101+10110101,3-[ 1] = 0
*-/a*aaaaaa*--aaaaaaaa+/-000001**1*00110,1-[ 2] = 0
/a-a-aaaaaa/-/+*aaaaaa*11/00001+-/001110,1-[ 3] = 0
