Adaptation in natural and artificial systems
Adaptation in natural and artificial systems
A classification of long-term evolutionary dynamics
ALIFE Proceedings of the sixth international conference on Artificial life
Replaying to tape: an investigation into the role of contingency in evolution
ALIFE Proceedings of the sixth international conference on Artificial life
Evolving novel behaviors via natural selection (poster)
ALIFE Proceedings of the sixth international conference on Artificial life
Perpetuating evolutionary emergence
Proceedings of the fifth international conference on simulation of adaptive behavior on From animals to animats 5
Visualizing evolutionary activity of genotypes
Artificial Life
Validation of evolutionary activity metrics for long-term evolutionary dynamics
GECCO '05 Proceedings of the 7th annual conference on Genetic and evolutionary computation
Size selection and adaptive evolution in an artificial chemistry
Artificial Life
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Bedau's (1998a) 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 (Channon 2001) I presented the result that 'Geb', a system designed to verify and extend theories behind the generation of evolutionary emergent systems (Channon & Damper 2000), 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.