Context Matters: Adaptive Mutation for Grammars

1 code implementation • 25 Mar 2023 • Pedro Carvalho, Jessica Mégane, Nuno Lourenço, Penousal Machado

This work proposes Adaptive Facilitated Mutation, a self-adaptive mutation method for Structured Grammatical Evolution (SGE), biologically inspired by the theory of facilitated variation.

Symbolic Regression

Probabilistic Structured Grammatical Evolution

1 code implementation • 21 May 2022 • Jessica Mégane, Nuno Lourenço, Penousal Machado

PSGE statistically outperformed Grammatical Evolution (GE) on all six benchmark problems studied.

Co-evolutionary Probabilistic Structured Grammatical Evolution

1 code implementation • 19 Apr 2022 • Jessica Mégane, Nuno Lourenço, Penousal Machado

This work proposes an extension to Structured Grammatical Evolution (SGE) called Co-evolutionary Probabilistic Structured Grammatical Evolution (Co-PSGE).

Probabilistic Grammatical Evolution

1 code implementation • 15 Mar 2021 • Jessica Mégane, Nuno Lourenço, Penousal Machado

We evaluate the performance of PGE in two regression problems and compare it with GE and Structured Grammatical Evolution (SGE).