Why `GSA: a gravitational search algorithm' is not genuinely based on the law of gravity

Authors:
Melvin Gauci;Tony J. Dodd;Roderich Groβ
Affiliations:
Department of Automatic Control and Systems Engineering, The University of Sheffield, Sheffield, UK S1 3JD;Department of Automatic Control and Systems Engineering, The University of Sheffield, Sheffield, UK S1 3JD;Department of Automatic Control and Systems Engineering, The University of Sheffield, Sheffield, UK S1 3JD
Venue:
Natural Computing: an international journal
Year:
2012

Citing 2
Cited 1

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Abstract

This letter highlights a fundamental inconsistency in the formulation of the Gravitational search algorithm (GSA) (Rashedi et al., Inf Sci 2232---48, 2009). GSA is said to be based on the law of gravity, that is, candidate solutions attract each other in the search space based on their relative distances and `masses' (qualities). We show that, contrary to what is claimed, GSA does not take the distances between solutions into account, and therefore cannot be considered to be based on the law of gravity.