Publication Details
Cartesian Genetic Programming as an Optimizer of Programs Evolved with Geometric Semantic Genetic Programming
Sekanina Lukáš, prof. Ing., Ph.D. (DCSY)
Cartesian Genetic Programming, Geometric Semantic Genetic Programming, symbolic
regression, semantics
In Geometric Semantic Genetic Programming (GSGP), genetic operators directly work
at the level of semantics rather than syntax. It provides many advantages,
including much higher quality of resulting individuals (in terms of error) in
comparison with a common genetic programming. However, GSGP produces extremely
huge solutions that could be difficult to apply in systems with limited resources
such as embedded systems. We propose Subtree Cartesian Genetic Programming (SCGP)
-- a method capable of reducing the number of nodes in the trees generated by
GSGP. SCGP executes a common Cartesian Genetic Programming (CGP) on all
elementary subtrees created by GSGP and on various compositions of these
optimized subtrees in order to create one compact representation of the original
program. SCGP does not guarantee the (exact) semantic equivalence between the CGP
individuals and the GSGP subtrees, but the user can define conditions when
a particular CGP individual is acceptable. We evaluated SCGP on four common
symbolic regression benchmark problems and the obtained node reduction is from
92.4% to 99.9%.
@inproceedings{BUT156847,
author="Ondřej {Končal} and Lukáš {Sekanina}",
title="Cartesian Genetic Programming as an Optimizer of Programs Evolved with Geometric Semantic Genetic Programming",
booktitle="Genetic Programming 22nd European Conference, EuroGP 2019",
year="2019",
pages="98--113",
publisher="Springer International Publishing",
address="Cham",
doi="10.1007/978-3-030-16670-0\{_}7",
isbn="978-3-030-16669-4",
url="https://www.fit.vut.cz/research/publication/11859/"
}