This page provides information about Head-Driven Phrase Structure Grammar (HPSG) related activities at the Center for the Study of Language and Information (CSLI) at Stanford University.

The XTAG Project XTAG is an on-going project to develop a wide-coverage grammar for English using a lexicalized Tree Adjoining Grammar (TAG) formalism. XTAG also serves as an system for the development of TAGs and consists of a parser, an X-windows grammar development interface and a morphological analyzer. CONTENTS English Grammar The most recent release of the XTAG English grammar. Download ...