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I would like to ask about the standard deviation of objective function value.

There are two types of standard deviations:

  1. Population standard deviation

  2. Sample standard deviation

In metaheuristic optimization algorithms most scholars are used std in your papers. What kind of standard deviation is used in metaheuristic optimization algorithms?

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  • $\begingroup$ The difference is usually very slight. $\endgroup$ – Yuval Filmus May 24 at 7:17
  • $\begingroup$ Different subfields have different conventions. For instance, in the value oracle model, there isn't such a distinction (that I've encountered). To better address your question, do you mind putting a link to where you are seeing this used? $\endgroup$ – Chris Harshaw May 26 at 18:33

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