Difference between revisions of "Feature cooccurrence restrictions"
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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. | ||
| + | ===Example=== | ||
| + | Only verbal catgories can contain the feature ''vform'': | ||
| + | |||
| + | [VFORM] <math>\rightarrow</math> [+V, -N] | ||
| + | |||
| + | |||
| + | Phrasal catgories can not contain the feature ''subcat'' | ||
| + | |||
| + | [BAR 2] <math>\rightarrow</math> <math>\neg</math> [SUBCAT] | ||
Revision as of 10:20, 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.
Example
Only verbal catgories can contain the feature vform:
[VFORM] <math>\rightarrow</math> [+V, -N]
Phrasal catgories can not contain the feature subcat
[BAR 2] <math>\rightarrow</math> <math>\neg</math> [SUBCAT]
