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Journal Articles Algorithmica Year : 2021

Self-Adjusting Mutation Rates with Provably Optimal Success Rules


The one-fifth success rule is one of the best-known and most widely accepted techniques to control the parameters of evolutionary algorithms. While it is often applied in the literal sense, a common interpretation sees the one-fifth success rule as a family of success-based updated rules that are determined by an update strength F and a success rate. We analyze in this work how the performance of the (1+1) Evolutionary Algorithm on LeadingOnes depends on these two hyper-parameters. Our main result shows that the best performance is obtained for small update strengths F = 1 + o(1) and success rate 1/e. We also prove that the running time obtained by this parameter setting is, apart from lower order terms, the same that is achieved with the best fitness-dependent mutation rate. We show similar results for the resampling variant of the (1+1) Evolutionary Algorithm, which enforces to flip at least one bit per iteration.
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hal-03377092 , version 1 (14-10-2021)



Benjamin Doerr, Carola Doerr, Johannes Lengler. Self-Adjusting Mutation Rates with Provably Optimal Success Rules. Algorithmica, 2021, 83 (10), pp.3108-3147. ⟨10.1007/s00453-021-00854-3⟩. ⟨hal-03377092⟩
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