Lesson plan

Evolution window

Evolution window is the narrow band of the mutation step size σ, where significant progress toward the fitness/objective function's optimum was observed in evolution strategies. There are three well-known methods to adapt the mutation step size σ in evolution strategies: * (1/5-th) Success Rule * Self-Adaptation (for example through log-normal mutations) * Cumulative Step Size Adaptation (CSA) On simple functions all of them have been empirically shown to keep the step size within the evolution window.

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Article summary

Evolution window is the narrow band of the mutation step size σ, where significant progress toward the fitness/objective function's optimum was observed in evolution strategies. There are three well-known methods to adapt the mutation step size σ in evolution strategies: * (1/5-th) Success Rule * Self-Adaptation (for example through log-normal mutations) * Cumulative Step Size Adaptation (CSA) On simple functions all of them have been empirically shown to keep the step size within the evolution window.

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Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

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