Studying bloat control and maintenance of effective code in linear genetic programming for symbolic regression
Data
2016
Autores
dal Piccol Sotto, Leo Francoso 
de Melo, Vinicius Veloso
Tipo
Artigo
Título da Revista
ISSN da Revista
Título de Volume
Resumo
Linear Genetic Programming (LGP) is an Evolutionary Computation algorithm, inspired in the Genetic Programming (GP) algorithm. Instead of using the standard tree representation of GP, LGP evolves a linear program, which causes a graph-based data flow with code reuse. LGP has been shown to outperform GP in several problems, including Symbolic Regression (SReg), and to produce simpler solutions. In this paper, we propose several LGP variants and compare them with a traditional LGP algorithm on a set of benchmark SReg functions from the literature. The main objectives of the variants were to both control bloat and privilege useful code in the population. Here we evaluate their effects during the evolution process and in the quality of the final solutions. Analysis of the results showed that bloat control and effective code maintenance worked, but they did not guarantee improvement in solution quality. (C) 2015 Elsevier B.V. All rights reserved.
Descrição
Citação
Neurocomputing. Amsterdam, v. 180, p. 79-93, 2016.