Network of evolutionary processors with splicing rules and forbidding context

  • Authors:

  • Ashish Choudhary;Kamala Krithivasan

  • Affiliations:

  • Dept of Computer Science and Engineering, Indian Institute of Technology, Madras, Chennai, India;Dept of Computer Science and Engineering, Indian Institute of Technology, Madras, Chennai, India

  • Venue:
  • IWINAC'05 Proceedings of the First international conference on Mechanisms, Symbols, and Models Underlying Cognition: interplay between natural and artificial computation - Volume Part I
  • Year:
  • 2005

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Abstract

In this paper we consider networks of evolutionary processors with splicing rules and forbidding context (NEPFS) as language generating and computational devices. Such a network consists of several processors placed on the nodes of a virtual graph and are able to perform splicing (which is a biologically motivated operation) on the words present in that node, according to the splicing rules present there. Before applying the splicing operation on words, we check for the absence of certain symbols (forbidding context) in the strings on which the rule is applied. Each node is associated with an input and output filter. When the filters are based on random context conditions, one gets the computational power of Turing machines with networks of size two. We also show how these networks can be used to solve NP–complete problems in linear time.