Abstract
The theory of machine self-reproduction formalised by John von Neumann illustrates the real living organisms’ self-reproduction equipped with genotype and phenotype. However, within such a simulated world as Avida, this particular style of self-reproduction has not been previously studied. In an attempt to characterise the von Neumann style self-reproducer in a computational system, we have implemented a novel seed program that self-reproduces using von Neumann’s architecture. We expected that distinctly different evolutionary dynamics of organisms in the system would be observed, specifically including the possibility of mutationally altered genotype-phenotype mapping. However, what we have observed is degenerative displacement by self-copiers, which are conventional self-reproducers in the system. The mutational easiness of this degeneration was not anticipated, although we knew the selective advantage that such self-copiers intrinsically would have in the system.
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Hasegawa, T., McMullin, B. (2012). Degeneration of a von Neumann Self-reproducer into a Self-copier within the Avida World. In: Ziemke, T., Balkenius, C., Hallam, J. (eds) From Animals to Animats 12. SAB 2012. Lecture Notes in Computer Science(), vol 7426. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-33093-3_23
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DOI: https://doi.org/10.1007/978-3-642-33093-3_23
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