GA optimization inequality constraints

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Nivedhitha S
Nivedhitha S 2019-8-30
编辑： Matt J 2019-9-3
Hello community,
I have been trying to solve a optimization problem for which my inequality constrains are as follows:
Say if X is the solution (1*2000 matrix), my constraint is that every next value for the X matrix should be higher than the previous value. Lets say a is value of X at 1st position (X1) and b is the value at second X2. So constraint is b-a >= 0.01; To write it in terms of less than, since ga takes constraints as A.X<=b, we have (a-b <= -0.01).
But when iam trying to build A matrix and B matrix, when i give negative inputs in B matrix i always get the error: Could not find a feasible initial point.
Can someone help me in - how to define this constraint without using a negative constant value? or is there any other way to do the same? I have been struck in this problem for quite sometime. Please give me any siggestions.
Thanks.

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Matt J
Matt J 2019-8-30
编辑：Matt J 2019-8-30
The construction of the A and b matrices should be,
A=-diff(speye(2000));
b=-0.01*ones(2000,1);
If you have done this, then there is nothing incorrect about the way you have built the constraints, assuming X(i+1)-X(i)>=0.01 are indeed the conditions you want. You should investigate whether the problem truly does have a feasible solution under these constraints and whatever other constraints you have imposed.
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Nivedhitha S
Nivedhitha S 2019-9-3
Thanks for noticing that. But when i tried using something like this also, I got the same error. ie., whenever i used a negative value for b matrix i got the error.
b= zeros (2880,1);
for n = 1:4:no_term-4
b (n) = -0.01;
end
for n = 2:4:no_term-4
b (n) = -0.01;
end
for n = 3:4:no_term-4
b (n) = -0.0001;
end
for n = 4:4:no_term-4
b (n) = -0.001;
end
Matt J
Matt J 2019-9-3
编辑：Matt J 2019-9-3
They are still too large to satisfy your bounds.

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