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Local ensemble surrogate assisted crowding differential evolution

Authors: Chen Jin; A. K. Qin 0001; Ke Tang 0001;

Local ensemble surrogate assisted crowding differential evolution

Abstract

Differential evolution (DE) is a powerful population-based stochastic optimization algorithm. Although its efficacy has been witnessed in various applications, the performance of DE is usually challenged when the computational budget is decreased and/or the search landscape's complexity is increased. To address these issues, we propose a new local ensemble surrogate assisted crowding DE (LES-CDE) algorithm, which consists of multiple local surrogate models built upon the historical search information accumulated in diverse overlapped local regions of the search space. In LES-CDE, an ensemble of several adjacent local surrogates is utilized to guide the creation of promising trial vectors. To maintain the local nature of each surrogate model, LES-CDE uses the replacement scheme of crowding DE (CDE) to update the population which also serves as model landmarks. We test LES-CDE under varying parameters and compare them with CDE on 15 numerical test problems taken from CEC 2015 single-objective real-parameter optimization testbed. Results from our experiments demonstrate the superiority of LES-CDE over CDE in a statistically significant manner.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
5
Average
Average
Average
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