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Unexpected evolutionary dynamics in a string based artificial chemistry

Decraene, James and Mitchell, George G. and McMullin, Barry (2008) Unexpected evolutionary dynamics in a string based artificial chemistry. In: Artificial Life XI: the Eleventh International Conference on the Simulation and Synthesis of Living Systems, 5-8 August 2008, Winchester, United Kingdom. ISBN 978-0-262-75017-2

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Abstract

This work investigates closure in Cell Signaling Networks, which is one research area within the ESIGNET project. We employ a string-based Artificial Chemistry based on Holland’s broadcast language (Molecular Classifier System, Broadcast Language, or MCS.b). We present a series of experiments focusing on the emergence and evolution of self-maintaining molecular organizations. Such experiments naturally relate to similar studies conducted in artificial chemistries such as Tierra, Alchemy and Alpha-Universes. However, our results demonstrate some counter-intuitive outcomes, not indicated in previous literature. Each of these “unexpected” evolutionary dynamics (including an elongation catastrophe phenomenon) are examined and explained both informally and formally. We also demonstrate how the elongation catastrophe can be prevented using a multi-level selectional model of the MCS.b (which acts both at the molecular and cellular level). This work provides complementary insights into the understanding of evolutionary dynamics in minimal artificial chemistries.

Item Type:Conference or Workshop Item (Paper)
Event Type:Conference
Refereed:Yes
Additional Information:Pages 158-165
Subjects:Engineering > Artificial life
DCU Faculties and Centres:DCU Faculties and Schools > Faculty of Engineering and Computing > School of Electronic Engineering
Research Initiatives and Centres > Research Institute for Networks and Communications Engineering (RINCE)
Published in:Artificial Life XI: Proceedings of the Eleventh International Conference on the Simulation and Synthesis of Living Systems. . MIT Press. ISBN 978-0-262-75017-2
Publisher:MIT Press
Official URL:http://www.alifexi.org/papers/ALIFExi_pp158-165.pdf
Copyright Information:Copyright 2008 the authors
Use License:This item is licensed under a Creative Commons Attribution-NonCommercial-Share Alike 3.0 License. View License
ID Code:4589
Deposited On:08 Jun 2009 14:17 by James Decraene. Last Modified 08 Jun 2009 14:17

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