TY - BOOK
T1 - Context-Free Grammars: Covers, Normal Forms, and Parsing
A2 - Nijholt, Anton
PY - 1980
Y1 - 1980
N2 - This monograph develops a theory of grammatical covers, normal forms and parsing. Covers, formally defined in 1969, describe a relation between the sets of parses of two context-free grammars. If this relation exists then in a formal model of parsing it is possible to have, except for the output, for both grammars the same parser. Questions concerning the possibility to cover a certain grammar with grammars that conform to some requirements on the productions or the derivations will be raised and answered. Answers to these cover problems will be obtained by introducing algorithms that describe a transformation of an input grammar into an output grammar which satisfies the requirements. The main emphasis in this monograph is on transformations of context-free grammars to context-free grammars in some normal form. However, not only transformations of this kind will be discussed, but also transformations which yield grammars which have useful parsing properties.
AB - This monograph develops a theory of grammatical covers, normal forms and parsing. Covers, formally defined in 1969, describe a relation between the sets of parses of two context-free grammars. If this relation exists then in a formal model of parsing it is possible to have, except for the output, for both grammars the same parser. Questions concerning the possibility to cover a certain grammar with grammars that conform to some requirements on the productions or the derivations will be raised and answered. Answers to these cover problems will be obtained by introducing algorithms that describe a transformation of an input grammar into an output grammar which satisfies the requirements. The main emphasis in this monograph is on transformations of context-free grammars to context-free grammars in some normal form. However, not only transformations of this kind will be discussed, but also transformations which yield grammars which have useful parsing properties.
KW - IR-66928
KW - HMI-SLT: Speech and Language Technology
KW - EWI-9219
U2 - 10.1007/3-540-10245-0
DO - 10.1007/3-540-10245-0
M3 - Book
SN - 0-387-10245-0
T3 - Lecture Notes in Computer Science
BT - Context-Free Grammars: Covers, Normal Forms, and Parsing
PB - Springer
CY - Berlin
ER -