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Can I restart surrogateopt from earlier iterations with checkpoint file?

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广志 满
广志 满 2023-5-6
评论： 广志 满 2023-5-9
My surrogateopt stopped because of external program crash, and I'm sure several function evaluations near the crash is not reliable. Thus, I want to restart surrogateopt from earlier iterations rather than resuming from the itertaion that the checkpoint file ends. Is it possible?
  2 个评论
广志 满
广志 满 2023-5-9
I finally gave up this attempt and edited my code to save checkpoint file every iteration rather than overwrite it. The implementation is based on 'OutputFcn' in optimoptions. So next time I can restart the optimization process from any iteration.
广志 满
广志 满 2023-5-9
options = optimoptions('surrogateopt','CheckpointFile','surrogateopt_check.mat','OutputFcn',@saveFcn);
and define saveFcn as
function stop = saveFcn(x,optimValues,state)
load 'surrogateopt_check.mat'
filename = 'check' + string(CheckPointData.BlackboxModelOptimizerData.state.iter) +'.mat';
save(filename,'CheckPointData');
stop = false;
end

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回答（1 个）

Rakesh Kumar
Rakesh Kumar 2023-5-9
I don't think of any easy way to do this.

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