Runtime Analysis of the Compact Genetic Algorithm on the LeadingOnes Benchmark

The compact genetic algorithm (cGA) is one of the simplest estimation-of-distribution algorithms (EDAs). Next to the univariate marginal distribution algorithm (UMDA)- another simple EDA-, the cGA has been subject to extensive mathematical runtime analyses, often showcasing a similar or even superio...

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Vydané v:IEEE transactions on evolutionary computation s. 1
Hlavní autori: Chwialkowski, Marcel, Doerr, Benjamin, Krejca, Martin S.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: IEEE 2025
Predmet:
Benchmark testing
compact genetic algorithm
Estimation-of-distribution algorithms
Evolutionary computation
Genetic algorithms
Genetics
LeadingOnes
Lower bound
Noise
Optimization
Probabilistic logic
Runtime
runtime analysis
Upper bound
ISSN:1089-778X, 1941-0026
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Popis
Shrnutí:The compact genetic algorithm (cGA) is one of the simplest estimation-of-distribution algorithms (EDAs). Next to the univariate marginal distribution algorithm (UMDA)- another simple EDA-, the cGA has been subject to extensive mathematical runtime analyses, often showcasing a similar or even superior performance to competing approaches. Surprisingly though, up to date and in contrast to the UMDA and many other heuristics, we lack a rigorous runtime analysis of the cGA on the LEADINGONES benchmark-one of the most studied theory benchmarks in the domain of evolutionary computation. We fill this gap in the literature by conducting a formal runtime analysis of the cGA on LEADINGONES. For the cGA's single parameter-called the hypothetical population size-at least polylogarithmically larger than the problem size, we prove that the cGA samples the optimum of LEADINGONES with high probability within a number of function evaluations quasi-linear in the problem size and linear in the hypothetical population size. For the best hypothetical population size, our result matches, up to polylogarithmic factors, the typical quadratic runtime that many randomized search heuristics exhibit on LEADINGONES. Our analysis exhibits some noteworthy differences in the working principles of the two algorithms which were not visible in previous works.
ISSN:1089-778X
1941-0026
DOI:10.1109/TEVC.2025.3549929