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how do i code parent selection automatically?

4 次查看（过去 30 天）
sharifah shuthairah syed abdullah
i want to make acoding on ga GA parent selection to using crossover rate
RS is the parent that i have already sorted the fist collumn is the numbering for the result, 2nd collumn is the value and 3rd untill 14th collumn is the result arrangement
RS =
1 31868 11 4 7 5 12 3 9 1 2 8 6 10
2 35816 8 10 11 6 9 4 5 1 7 3 2 12
3 39008 10 4 5 2 9 7 3 11 6 12 1 8
4 39674 4 9 2 6 5 11 10 12 1 7 8 3
5 42110 3 5 9 11 7 4 2 8 1 10 12 6
6 45418 6 3 11 7 8 5 1 2 4 9 10 12
7 47514 8 9 12 2 10 3 7 4 1 11 5 6
8 50936 8 7 12 2 5 9 6 4 3 10 1 11
9 53966 7 6 12 3 10 8 11 5 4 1 2 9
10 57422 5 2 6 4 9 8 12 11 7 1 10 3
after the sorting i want to choose parent to make a crossover using 0.4 as a crossover persentage
%% parent selection
cp=0.4; % Crossover Percentage
np=2*round(cp*r/2); % Number of Offsprings (Parents)
from the calcuation i need to chhose 4 out of 10 parent so i want to choose parent 1 and 2 then 9 and 10
then i do it like this
p1 = RS(1,3:end)
p2 = RS(2,3:end)
p3 = RS(9,3:end)
p4 = RS(10,3:end)
however when i do it like this, if i change the crossover persentage to other number i need to do it manually..
so how can i make it automatically choose whatever i change the crossover rate?
for example if i change the crossover rate to 0.6 so i need to choose 6 parent
when i run the coding will automatically choose 3 parent from top and 3 parent from bellow..

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