Infeasible solution. Reduced gradient less than tolerance.

Problems with modeling
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seydaseyda
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Infeasible solution. Reduced gradient less than tolerance.

Post by seydaseyda »

Hi,

I am working on a multi objective problem and in every situation the model gave me the ** Infeasible solution. Reduced gradient less than tolerance. error.
Normally the model can solved as a single objective problem ( if I sum up two objective function in a row). But when I try to split the objectives and solve the model as multi objective model it gives infeasible solution error. I tried the fuzzy logic and epsilon constraint methods.
What could be the real problem?
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