Optimization cost function file
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Mondeep maz
on 8 Jun 2018
Commented: Walter Roberson
on 20 Aug 2022
Is it possible that optimization can be done without creating a seperate function file for the cost function and the constraint?..if yes then how can we do it....?
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Walter Roberson
on 20 Aug 2022
There are a few example cost functions such as rosenbeck, but mostly you write your own cost function depending on what you want to optimize.
See also Problem Based Optimization
Accepted Answer
Walter Roberson
on 9 Jun 2018
Each iteration of the objective function called by fmincon or ga or similar must involve the same number of variables, and must be deterministic (no random values.)
You can use different numbers of variables for different calls to the minimizer, including in a loop. That could involve creating a new anonymous function for each iteration of the loop.
An objective function which is just the sum of variables can be expressed as just @sum; for a weighted sum, @(x) sum(x.*weights) or more robustly @(x) sum(x(:).*weights(:)) to be sure you do not have row/column difficulties.
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