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ga prediction

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ga prediction

Postby numpsy » Fri Jan 30, 2009 7:08 pm

i want to ask why there are defined some constants: var constants = new double[] { 1, 2, 3, 5, 7, 11, 13, 17, 19, 23 };

which purpose the have?

greetz
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Re: ga prediction

Postby andrew.kirillov » Sat Jan 31, 2009 10:33 am

Hello,

These constants are added to make GA build expressions not only using variables, but constants as well. For example, if we speak about prediction task, then without constants expressions would be like this:
Code: Select all
x(t)=x(t-1)+x(t-2)*x(t-3)

But with constants we may have something like this:
Code: Select all
x(t)=3*x(t-1)+x(t-2)*x(t-3)/2 + 7


With best regards,
Andrew
With best regards,
Andrew


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