On the covering of parsable grammars

Anton Nijholt

doi:10.1016/S0022-0000(77)80027-5

On the covering of parsable grammars

Anton Nijholt

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Abstract

The notion of a parsable grammar is introduced. A definition of cover is provided which is a generalization of a well-known definition of cover. With this new definition of cover we prove that every parsable grammar is covered by an LR(1) grammar or, if the language is prefic-free, by a strict-deterministic grammar. A consequence of this result is that every LR(k) grammar is covered by an LR(1) or a strict deterministic grammar.

Original language	English
Pages (from-to)	99-110
Number of pages	12
Journal	Journal of computer and system sciences
Volume	15
Issue number	1
DOIs	https://doi.org/10.1016/S0022-0000(77)80027-5
Publication status	Published - Aug 1977

Keywords

HMI-SLT: Speech and Language Technology

Access to Document

10.1016/S0022-0000(77)80027-5Licence: Other

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Final published version, 1.65 MBLicence: Other

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AB - The notion of a parsable grammar is introduced. A definition of cover is provided which is a generalization of a well-known definition of cover. With this new definition of cover we prove that every parsable grammar is covered by an LR(1) grammar or, if the language is prefic-free, by a strict-deterministic grammar. A consequence of this result is that every LR(k) grammar is covered by an LR(1) or a strict deterministic grammar.

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