A general framework for regulated rewriting based on the applicability of rules

  • Authors:
  • Rudolf Freund;Marian Kogler;Marion Oswald

  • Affiliations:
  • Faculty of Informatics, Vienna University of Technology, Vienna, Austria;Faculty of Informatics, Vienna University of Technology, Vienna, Austria and Institute of Computer Science, Martin Luther University Halle-Wittenberg, Halle, Germany;Faculty of Informatics, Vienna University of Technology, Vienna, Austria and Computer and Automation Research Institute, Hungarian Academy of Sciences, Budapest, Hungary

  • Venue:
  • Computation, cooperation, and life
  • Year:
  • 2011

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Abstract

We introduce a general model for various mechanisms of regulated rewriting based on the applicability of rules, especially we consider graph-controlled, programmed, matrix, random context, and ordered grammars as well as some basic variants of grammar systems. Most of the general relations between graph-controlled grammars, matrix grammars, random-context grammars, and ordered grammars established in this paper are independent from the objects and the kind of rules and only based on the notion of applicability of rules within the different regulating mechanisms and their specific structure in allowing sequences of rules to be applied. For example, graph-controlled grammars are always at least as powerful as programmed and matrix grammars. For the simulation of random context and ordered grammars by matrix and graph-controlled grammars, some specific requirements have to be fulfilled by the types of rules.