Abstract
In this chapter we extend to contextual grammars some restrictions which have been much investigated for the derivations in context-free grammars. The selection defined by the choice mapping can be considered to be similar to the restriction in conditional context-free grammars, where a regular set is associated with each rule and a rule can be applied only to strings in the associated language. Therefore, for the control mechanisms defined below for grammars with choice we have a sort of double regulation of the derivation. As expected, in this way the generative power is in general increased.
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Bibliographical Notes
The matrix, programmed, and regular control restrictions were first considered for external contextual grammars without choice in [151]. In [160] they were also investigated for internal contextual grammars, but again considering only the case of grammars without choice.
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© 1997 Springer Science+Business Media Dordrecht
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Păun, G. (1997). Regulated Contextual Grammars. In: Marcus Contextual Grammars. Studies in Linguistics and Philosophy, vol 67. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-8969-7_12
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DOI: https://doi.org/10.1007/978-94-015-8969-7_12
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-4931-5
Online ISBN: 978-94-015-8969-7
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