Bedau's
classification system for long-term evolutionary
dynamics provides a test for open-ended evolution. Making this
ALife test more rigorous, and passing it, are two of the most
important open problems in the field.
Previously I presented the result that
`Geb',
a system designed to verify and extend theories
behind the generation of evolutionary emergent
systems, has passed this test. However I also
criticised the test, most significantly with regard to its
normalisation method for artificial systems. This paper details a
modified normalisation method, based on component activity
normalisation, that overcomes these criticisms. It then presents
the results of the revised test when applied to Geb, which indicate
that this system does indeed exhibit open-ended
evolution.