Feature cooccurrence restrictions

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]

Comments

Modern unification grammar formalisms like Head-Driven Phrase Structure Grammar use typed feature strcutures instead.

Other Languages

• German Feature cooccurrence restrictions (de)