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Browsing School of Computing by Author "Ehlers, EM"

Browsing School of Computing by Author "Ehlers, EM"

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  • Combining context provisions with graph grammar rewriting rules - the three-dimensional case 
    Barnard, A; Ehlers, EM (2001)
    In this paper we consider the representation and generation of three-dimensional structures by means of formal descriptive methods. Graph and graph grammar theory present us with a powerful two-dimensional representational ...
  • Knowledge representation using formal grammars 
    Von Solms, S.H.; Ehlers, E.M.; Enslin, DJ (South African Institute of Computer Scientists and Information Technologists, 1991)
    In this paper, formal grammars, specifically random context grammars, are used as a vehicle for knowledge representation in expert systems. Random context grammars and the manner in which they are used to represent knowledge ...
  • Random context structure grammars 
    Ehlers, E.M.; von Solms, S. H. (Computer Society of South Africa (on behalf of SAICSIT), 1987)
    Random Context Structure Grammars are defined. The language generated by a Random Context Structure Grammar is a set of three-dimensional digital structures. A hierarchy of Random Context Grammars is discussed briefly. ...
  • The representation of chemical structures by random context structure grammars 
    Ehlers, EM; Von Solms, SH (1987)
    A representation of chemical molecules by Random Context Structure Grammars is proposed. Random Context Structure Grammars generate three-dimensional digital structures. Random Context Structure Grammars and Random Context ...

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