Economical transformations of phrase-structure grammars to scattered context grammars
This paper presents a transformation that converts any phrase-structure grammar, H, in Penttonen normal form to an equivalent scattered context grammar whose size differs from the size of H quite insignificantly; specifically, G has only five more nonterminals, four more context-dependent production...
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| Main Author: | |
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| Format: | Article |
| Published: |
1998
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| Series: | Acta cybernetica
13 No. 3 |
| Kulcsszavak: | Számítástechnika, Kibernetika |
| Subjects: | |
| Online Access: | http://acta.bibl.u-szeged.hu/12588 |
| Summary: | This paper presents a transformation that converts any phrase-structure grammar, H, in Penttonen normal form to an equivalent scattered context grammar whose size differs from the size of H quite insignificantly; specifically, G has only five more nonterminals, four more context-dependent productions, and one more context-free production than H. An analogical result holds for Kuroda normal form, too. |
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| Physical Description: | 225-242 |
| ISSN: | 0324-721X |