GENERALIZED GENERALIZED PHRASE STRUCTURE GRAMMARS

A form of grammar called generalized generalized phrase structure grammar or G2PSG is presented. G2PSG is a generalization of generalized phrase structure grammar (GPSG) in which the head feature convention, the foot feature principle, the control agreement principle and the system of feature specification defaults are subsumed into a single mechanism which is an extension of the feature co-occurrence restriction mechanism of standard GPSG. A parsing algorithm for G2PSGs is described. © 1991.