Information Technology Reference
In-Depth Information
Fig. 9.20
Relationship between the genome and the slope criterion
Crossover
To create a child, two parents are required. A tournament is used to select candidate
solutions, keeping the best individual from a randomly selected group (the one with
the highest rating based on
fitness). The tournament size is set to 2, this keeps
selection pressure low and helps maintain a high diversity in the population. The
tournament selection is repeated twice to select two parents (tournament
“
win-
ners
), which are used by the crossover operator to create a single child. The
electrode speci
”
ed by the resulting child is located halfway between the electrodes
speci
ed by both parents. The frequency information is combined using the logical
operator given in Table
9.2
. This crossover is used to balance the production of 1
and 0 s. For a given frequency, when the two parents share the same value (1 for a
selected frequency or 0 for a non-selected frequency), the child inherits this value.
