abstract = "In this paper we introduce a new Grammatical Evolution
(GE) system designed to support the specification of
problem semantics in the form of attribute grammars
(AG). We discuss the motivations behind our system
design, from its use of shared memory spaces for
attribute storage to the use of a dynamically type
programming language, Python, to specify grammar
semantics. After a brief analysis of some of the
existing GE AG system we outline two sets of
experiments carried out on four symbolic regression
type (SR) problems. The first set using a context free
grammar (CFG) and second using an AG. After presenting
the results of our experiments we highlight some of the
potential areas for future performance improvements,
using the new functionality that access to Python
interpreter and storage of attributes in shared memory
space provides.",