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What is "postprocess" option in DifferentialEvolution method (for instance when using NMaximize)?

What does it do when "Automatic"?

How can I set it differently for it to suite best my function?

Also what exactly is "Tolerance" option? What does that number mean?

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    $\begingroup$ FWIW, "PostProcess" may be FindMinimum, "KKT", or "InteriorPoint". The meanings are pretty obvious. Automatic means "KKT" followed by "InteriorPoint" only if the first attempt didn't work out. I don't know what the proper interpretation of the numerical value of "Tolerance" is, though. $\endgroup$ – Oleksandr R. May 9 '16 at 1:36
  • $\begingroup$ Have you already read through this, by any chance? $\endgroup$ – J. M.'s technical difficulties May 9 '16 at 3:22
  • $\begingroup$ Yes I've read that. Yet it doesn't answer to my questions. $\endgroup$ – Mirko Aveta May 9 '16 at 7:20