Subcategorization frame

Definition
Subcategorization frame is a formalization of the notion of subcategorization.

Example
(i) gives the strict subcategorization frame of the verb hit. It says that the pseudo-transitive verb hit optionally (indicated by the parentheses) selects an NP-complement (a sister-node, as indicated by the square brackets) to its right (indicated by the order '__ NP' rather than 'NP __').

(i) hit : [ __ (NP)]

Links

 * Utrecht Lexicon of Linguistics