** Next:** Introduction

# Grammatical Evolution : Solving Trigonometric Identities

**Conor Ryan, Michael O' Neill & JJ Collins **

Dept. Of Computer Science And Information Systems

University of Limerick

Ireland

**{Conor.Ryan**|**Michael.ONeill**|**J.J.Collins}@ul.ie**

### Abstract:

We describe a Genetic Algorithm that can evolve complete
programs using a variable length linear genome to govern the mapping of a
Backus Naur Form grammar definition to a program. Expressions and
programs of arbitrary complexity may be evolved. Our system, *Grammatical
Evolution*, has already been applied to a symbolic regression problem. Here
we apply our system to find Trigonometric Identities for Cos 2x.

*root*

*1998-10-02*