On the Generating Power of Regularly Controlled Bidirectional Grammars

Peter R.J. Asveld, Jan Anne Hogendorp

    Research output: Book/ReportReportOther research output

    41 Downloads (Pure)

    Abstract

    RCB-grammars or regularly controlled bidirectional grammars are context-free grammars of which the rules can be used in a productive and in a reductive fashion. In addition, the application of these rules is controlled by a regular language. Several modes of derivation can be distinguished for this kind of grammar. In this paper the generating power of the derivation mode that uses right-occurrence rewriting (RO-mode) is determined. Furthermore, a new mode called RA is introduced, which is a better formalization of the intuitive idea of right-occurrence rewriting than the RO-mode. The RO- and RA-mode have the same generating power, viz. the corresponding RCB-grammars both generate the recursively enumerable languages. Consequently, providing RCB/RO-grammars with a time bound results in a less powerful grammar model.
    Original languageEnglish
    Place of PublicationEnschede
    PublisherUniversity of Twente, Department of Computer Science
    Number of pages18
    Publication statusPublished - 1989

    Publication series

    NameMemoranda Informatica
    PublisherUniversity of Twente, Department of Computer Science
    No.INF 89-68
    ISSN (Print)0924-3755

    Keywords

    • HMI-SLT: Speech and Language Technology

    Fingerprint Dive into the research topics of 'On the Generating Power of Regularly Controlled Bidirectional Grammars'. Together they form a unique fingerprint.

    Cite this