P Systems Computing the Period of Irreducible Markov Chains

Authors

  • Mónica Cardona-Roca Dpt. of Mathematics, University of Lleida Av. Alcalde Rovira Roure, 191. 25198 Lleida, Spain
  • M. íngels Colomer-Cugat Dpt. of Mathematics, University of Lleida Av. Alcalde Rovira Roure, 191. 25198 Lleida, Spain
  • Agustí­n Riscos-Núñez Research Group on Natural Computing Dpt. of Computer Science and Artificial Intelligence University of Sevilla Avda. Reina Mercedes s/n, 41012 Sevilla, Spain
  • Miquel Rius-Font Department of Applied Mathematics IV Universitat Politécnica de Catalunya Edifici C3, Despatx 016, Av. del Canal Olí­mpic, s/n, 08860 Castelldefels, Spain

Keywords:

Markov chain, P Sytems, Membrane Computing

Abstract

It is well known that any irreducible and aperiodic Markov chain has exactly one stationary distribution, and for any arbitrary initial distribution, the se- quence of distributions at time n converges to the stationary distribution, that is, the Markov chain is approaching equilibrium as n→∞.
In this paper, a characterization of the aperiodicity in existential terms of some state is given. At the same time, a P system with external output is associated with any irre- ducible Markov chain. The designed system provides the aperiodicity of that Markov chain and spends a polynomial amount of resources with respect to the size of the in- put. A comparative analysis with respect to another known solution is described.

References

P. Brémaud: Markov Chains: Gibbs Fields, Monte Carlo Simulation, and Queues. Springer, New York, 1998.

M. Cardona, M.A. Colomer, M.J. Pérez-Jiménez, A. Zaragoza: Classifying states of a finite Markov chains with membrane computing. Lecture Notes in Computer Science. Springer,Vol 4361, pp. 266- 278, 2006. http://dx.doi.org/10.1007/11963516_17

O. Häggstöm: Finite Markov Chains and Algorithmic Applications. London Mathematical Society, Cambridge University Press, Cambridge, 2003.

R. Nelson: Probability, Stochastic Processes, and Queing Theory. Springer, New York, 1995. http://dx.doi.org/10.1007/978-1-4757-2426-4

Published

2009-09-01

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