Clarifying the Difference in Local Optima Network Sampling Algorithms - Archive ouverte HAL Access content directly
Conference Papers Year : 2019

Clarifying the Difference in Local Optima Network Sampling Algorithms


We conduct the first ever statistical comparison between two Local Optima Network (LON) sampling algorithms. These methodologies attempt to capture the connectivity in the local optima space of a fitness landscape. One sampling algorithm is based on a random-walk snowballing procedure, while the other is centred around multiple traced runs of an Iterated Local Search. Both of these are proposed for the Quadratic Assignment Problem (QAP), making this the focus of our study. It is important to note the sampling algorithm frameworks could easily be modified for other domains. In our study descriptive statistics for the obtained search space samples are contrasted and commented on. The LON features are also used in linear mixed models and random forest regression for predicting heuristic optimisation performance of two prominent heuristics for the QAP on the underlying combinatorial problems. The model results are then used to make deductions about the sampling algorithms’ utility. We also propose a specific set of LON metrics for use in future predictive models alongside previously-proposed network metrics, demonstrating the payoff in doing so.
Fichier principal
Vignette du fichier
EVOCOP_2019_corrected.pdf (917.9 Ko) Télécharger le fichier
Origin : Files produced by the author(s)

Dates and versions

hal-02475171 , version 1 (09-09-2021)



Sarah Thomson, Gabriela Ochoa, Sébastien Verel. Clarifying the Difference in Local Optima Network Sampling Algorithms. European Conference on Evolutionary Computation in Combinatorial Optimization (Part of EvoStar) 2019, Apr 2019, Leipzig, Germany. pp.163-178, ⟨10.1007/978-3-030-16711-0_11⟩. ⟨hal-02475171⟩
17 View
72 Download



Gmail Facebook Twitter LinkedIn More