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2014 | OriginalPaper | Buchkapitel

Two Look-Ahead Strategies for Local-Search Metaheuristics

verfasst von : David Meignan, Silvia Schwarze, Stefan Voß

Erschienen in: Learning and Intelligent Optimization

Verlag: Springer International Publishing

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Abstract

The main principle of a look-ahead strategy is to inspect a few steps ahead before taking a decision on the direction to choose. We propose two original look-ahead strategies that differ in the object of inspection. The first method introduces a look-ahead mechanism at a superior level for selecting local-search operators. The second method uses a look-ahead strategy on a lower level in order to detect promising solutions for further improvement. The proposed approaches are implemented using a hyper-heuristic framework and tested against alternative methods. Furthermore, a more detailed investigation of the second method is added and gives insight on the influence of parameter values. The experiments reveal that the introduction of a simple look-ahead strategy into an iterated local-search procedure significantly improves the results over tested problem instances.

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Fußnoten
1
The benchmark for determining the time limit is available at: http://​www.​asap.​cs.​nott.​ac.​uk/​external/​chesc2011/​benchmarking.​html, (Accessed November 2013).
 
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Metadaten
Titel
Two Look-Ahead Strategies for Local-Search Metaheuristics
verfasst von
David Meignan
Silvia Schwarze
Stefan Voß
Copyright-Jahr
2014
DOI
https://doi.org/10.1007/978-3-319-09584-4_18