| Head-driven Phrase Structure Grammar |
Website Links For Phrase Structure |
Information AboutHead-driven Phrase Structure Grammar |
| CATEGORIES ABOUT HEAD-DRIVEN PHRASE STRUCTURE GRAMMAR | |
| generative linguistics | |
| grammar frameworks | |
|
Head-driven phrase structure grammar (HPSG) is a non-derivational Generative Grammar theory developed by Carl Pollard and Ivan Sag ( 1985 ). It is the immediate successor to Generalized Phrase Structure Grammar . HPSG draws from other fields such as Computer Science (data type theory and Knowledge Representation ) and uses Ferdinand De Saussure 's notion of the Sign . It uses a uniform formalism and is organized in a modular way which makes it attractive for Natural Language Processing . An HPSG grammar includes principles and grammar rules and Lexicon entries which are normally not considered to belong to a grammar. The formalism is based on lexicalism. This means that the lexicon is more than just a list of entries; it is in itself richly structured. Individual entries are marked with types. Types form a hierarchy. The basic type HPSG deals with is the sign. form) and '' {Link without Title} '' (the syntactic and semantic information), both of which are split into subfeatures. Signs and rules are formalized as typed Feature Structure s. Various . Large HPSG grammars of various languages are being developed in the DELPH-IN http://www.delph-in.net/ collaboration network. Wide-coverage grammars of German http://gg.dfki.de/, http://www.delph-in.net/jacy are available under an open-source license. __NOTOC__ SEE ALSO BOOKS
EXTERNAL LINKS
REFERENCES |
|
|