Difference between revisions of "Feature cooccurrence restrictions (de)"
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'''Feature cooccurrence restrictions''' (FCRs) formulate well-formedness conditions for feature structures used by [[Generalized Phrase Structure Grammar]]. As a feature structure in this approach is taken to be an arbitrary set of feature specifications, it is necessary to block the combination of feature specifications which from a linguistic point of view make no sense. Most FCRs are formulated as implications. | '''Feature cooccurrence restrictions''' (FCRs) formulate well-formedness conditions for feature structures used by [[Generalized Phrase Structure Grammar]]. As a feature structure in this approach is taken to be an arbitrary set of feature specifications, it is necessary to block the combination of feature specifications which from a linguistic point of view make no sense. Most FCRs are formulated as implications. | ||
| − | === | + | ===Beispiel=== |
| − | + | Nur in verbalen Kategorien können das Merkmal ''vform'' enthalten: [VFORM] <math>\rightarrow</math> [+V, -N] | |
| − | + | Phrasale Katgorien dürfen nicht das Merkmal ''subcat'' enthalten: [BAR 2] <math>\rightarrow</math> <math>\neg</math> [SUBCAT] | |
===Kommentare=== | ===Kommentare=== | ||
Revision as of 10:27, 21 September 2007
Feature cooccurrence restrictions (FCRs) formulate well-formedness conditions for feature structures used by Generalized Phrase Structure Grammar. As a feature structure in this approach is taken to be an arbitrary set of feature specifications, it is necessary to block the combination of feature specifications which from a linguistic point of view make no sense. Most FCRs are formulated as implications.
Beispiel
Nur in verbalen Kategorien können das Merkmal vform enthalten: [VFORM] <math>\rightarrow</math> [+V, -N]
Phrasale Katgorien dürfen nicht das Merkmal subcat enthalten: [BAR 2] <math>\rightarrow</math> <math>\neg</math> [SUBCAT]
Kommentare
Moderne unifikationsbasierte Grammatikformalismen wie die Head-Driven Phrase Structure Grammar verwenden anstelle von FCRs typisierte Merkmalsstrukturen.
Other Languages
- Englisch Feature cooccurrence restrictions
