On the size complexity of hybrid networks of evolutionary processors

  • Authors:
  • Juan Castellanos;Peter Leupold;Victor Mitrana

  • Affiliations:
  • Department of Artificial Intelligence, Polytechnical University of Madrid, Campus de Montegancedo, 28660 Boadilla del Monte, Madrid, Spain;Research Group in Mathematical Linguistics, Rovira i Virgili University, Pça. Imperial Tarraco 1, 43005 Tarragona, Spain;Research Group in Mathematical Linguistics, Rovira i Virgili University, Pça. Imperial Tarraco 1, 43005 Tarragona, Spain and Faculty of Mathematics and Computer Science, University of Buchare ...

  • Venue:
  • Theoretical Computer Science - Descriptional complexity of formal systems
  • Year:
  • 2005

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Abstract

The goal of this paper is twofold. Firstly, to survey in a systematic and uniform way the main results regarding the size descriptional complexity measures of hybrid networks of evolutionary processors as generating devices. Secondly, we improve some results about a size measure, prove that it is connected, and discuss the possibility of computing this measure for regular and context-free languages. We also briefly present a few NP-complete problems and recall how they can be solved in linear time by accepting networks of evolutionary processors with linearly bounded resources (nodes, rules, symbols). Finally, the size complexity of accepting hybrid networks of evolutionary processors recognizing all NP languages in polynomial time is briefly discussed.