Author
Listed:
- H. S. MORTVEIT
(Los Alamos National Laboratory, CCS-5, 87545 Los Alamos, New Mexico, USA)
- C. M. REIDYS
(Los Alamos National Laboratory, CCS-5, 87545 Los Alamos, New Mexico, USA)
Abstract
In this paper we study the evolution of sequential dynamical systems$(\mathsf{SDS})$as a result of the erroneous replication of the SDS words. An$\mathsf{SDS}$consists of (a) a finite, labeled graphYin which each vertex has a state, (b) a vertex labeled sequence of functions(Fvi,Y), and (c) a wordw, i.e. a sequence(w1,…,wk), where eachwiis aY-vertex. The functionFwi,Yupdates the state of vertexwias a function of the states ofwiand itsY-neighbors and leaves the states of all other vertices fixed. The$\mathsf{SDS}$over the wordwandYis the composed map:$[\mathfrak{F}_Y,w]=\prod_{i=1}^{k} F_{w_i}$. The wordwrepresents the genotype of the$\mathsf{SDS}$in a natural way. We will randomly flip consecutive letters ofwwith independent probabilityqand study the resulting evolution of the$\mathsf{SDS}$. We introduce combinatorial properties of$\mathsf{SDS}$which allow us to construct a new distance measure$\mathsf{D}$for words. We show that$\mathsf{D}$captures the similarity of corresponding$\mathsf{SDS}$. We will use the distance measure$\mathsf{D}$to study neutrality and mutation rates in the evolution of words. We analyze the structure of neutral networks of words and the transition of word populations between them. Furthermore, we prove the existence of a critical mutation rate beyond which a population of words becomes essentially randomly distributed, and the existence of an optimal mutation rate at which a population maximizes its mutant offspring.
Suggested Citation
H. S. Mortveit & C. M. Reidys, 2004.
"Neutral Evolution And Mutation Rates Of Sequential Dynamical Systems,"
Advances in Complex Systems (ACS), World Scientific Publishing Co. Pte. Ltd., vol. 7(03n04), pages 395-418.
Handle:
RePEc:wsi:acsxxx:v:07:y:2004:i:03n04:n:s0219525904000275
DOI: 10.1142/S0219525904000275
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