Authors
Jason Adair, Gabriela Ochoa, Katherine M Malan
Publication date
2019/7/13
Book
Proceedings of the Genetic and Evolutionary Computation Conference Companion
Pages
1407-1414
Description
Local Optima Networks (LONs) have been proposed as a coarsegrained model of discrete (combinatorial) fitness landscapes, where nodes are local optima and edges are search transitions based on an exploration search operator. This paper presents one of the first complex network analysis of continuous fitness landscapes. We use benchmark functions with well-known global structure, and an existing implementation of a Basin-Hopping algorithm to extract the networks. We also explore the impact of varying the Basin-Hopping perturbation step-size. Our results suggest that the landscape's connectivity pattern (global structure) strongly varies with the perturbation step-size, with extreme values of this parameter being detrimental to search and fragmenting the global structure. Our LON visualisations strikingly illustrate the landscape's global (funnel) structure, indicating that LONs serve as a tool for visualising …
Total citations
202020212022202320244481012
Scholar articles
J Adair, G Ochoa, KM Malan - Proceedings of the Genetic and Evolutionary …, 2019