Institut national de recherche en informatique et en automatique. Bulletin of Sociological Methodology/Bulletin de Méthodologie Sociologique, 37(1):55–57, December, 1992.
Institut national de recherche en informatique et en automatique [link]Paper  doi  abstract   bibtex   
We propose a modification of CMA-ES for the application to mixed-integer problems. The modification is comparatively small. First, integer variables with too a small variation undergo an additional integer mutation. This mutation is also used for updating the distribution mean but disregarded in the update of covariance matrix and step-size. Second, integer variables with too a small variation are disregarded in the global step-size update alltogether. This prevents random fluctuations of the step-size.
@article{noauthor_institut_1992,
	title = {Institut national de recherche en informatique et en automatique},
	volume = {37},
	issn = {0759-1063, 2070-2779},
	url = {http://journals.sagepub.com/doi/10.1177/075910639203700105},
	doi = {10.1177/075910639203700105},
	abstract = {We propose a modification of CMA-ES for the application to mixed-integer problems. The modification is comparatively small. First, integer variables with too a small variation undergo an additional integer mutation. This mutation is also used for updating the distribution mean but disregarded in the update of covariance matrix and step-size. Second, integer variables with too a small variation are disregarded in the global step-size update alltogether. This prevents random fluctuations of the step-size.},
	language = {en},
	number = {1},
	urldate = {2019-05-02},
	journal = {Bulletin of Sociological Methodology/Bulletin de Méthodologie Sociologique},
	month = dec,
	year = {1992},
	pages = {55--57}
}

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