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Avoiding Redundant Restarts in Multimodal Global Optimization

2 May 2024
Jacob De Nobel
Diederick Vermetten
Anna V. Kononova
O. M. Shir
Thomas Bäck
ArXiv (abs)PDFHTML
Abstract

Na\"ive restarts of global optimization solvers when operating on multimodal search landscapes may resemble the Coupon's Collector Problem, with a potential to waste significant function evaluations budget on revisiting the same basins of attractions. In this paper, we assess the degree to which such ``duplicate restarts'' occur on standard multimodal benchmark functions, which defines the \textit{redundancy potential} of each particular landscape. We then propose a repelling mechanism to avoid such wasted restarts with the CMA-ES and investigate its efficacy on test cases with high redundancy potential compared to the standard restart mechanism.

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