Dynamics of information and optimal control of mutation in evolutionary systems

Belavkin, Roman V. (2012) Dynamics of information and optimal control of mutation in evolutionary systems. In: Dynamics of information systems: mathematical foundations. Sorokin, Alexey, Murphey, Robert, Thai, My T. and Pardalos, Panos M., eds. Springer Proceedings in Mathematics & Statistics, 20 (20). Springer, New York, pp. 3-21. ISBN 9781461439059

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Evolutionary systems are used for search and optimization in complex problems and for modelling population dynamics in nature. Individuals in populations reproduce by simple mechanisms, such as mutation or recombination of their genetic sequences, and selection ensures they evolve in the direction of increasing fitness. Although successful in many applications, evolution towards an optimum or high fitness can be extremely slow, and the problem of controlling parameters of reproduction to speed up this process has been investigated by many researchers. Here, we approach the problem from two points of view: 1) as optimization of evolution in time; 2) as optimization of evolution in information. The former problem is often intractable, because analytical solutions are not available. The latter problem, on the other hand, can be solved using convex analysis, and the resulting control, optimal in the sense of information dynamics, can achieve good results also in the sense of time evolution. The principle is demonstrated on the problem of optimal mutation rate control in Hamming spaces of sequences. To facilitate the analysis, we introduce the notion of a relatively monotonic fitness landscape, and obtain general formula for transition probability by simple mutation in a Hamming space. Several rules for optimal control of mutation are presented, and the resulting dynamics are compared and discussed.

Item Type: Book Section
Research Areas: A. > School of Science and Technology > Computer Science
A. > School of Science and Technology > Computer Science > Artificial Intelligence group
Item ID: 13322
Useful Links:
Depositing User: Roman Belavkin
Date Deposited: 23 May 2014 10:23
Last Modified: 13 Oct 2016 14:30
URI: https://eprints.mdx.ac.uk/id/eprint/13322

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