IRCS Technical Reports Series
Document Type
Technical Report
Date of this Version
February 2001
Abstract
This document describes a sizable grammar of English written in the TAG formalism and implemented for use with the XTAG system. This report and the grammar described herein supersedes the TAG grammar described in the earlier 1998 XTAG release. The English grammar described in this report is based on the TAG formalism developed in (Joshi et al., 1975), which has been extended to include lexicalization (Schabes et al., 1988), and unification-based feature structures (Vijay-Shanker and Joshi, 1991). The range of syntactic phenomena that can be handled is large and includes auxiliaries (including inversion), copula, raising and small clause constructions, topicalization, relative clauses, infinitives, gerunds, passives, adjuncts, ditransitives (and datives), ergatives, it-clefts, wh-clefts, PRO constructions, noun-noun modifications, extraposition, determiner sequences, genitives, negation, noun-verb contractions, sentential adjuncts, imperatives and resultatives. The XTAG grammar is continuously updated with the addition of new analyses and modification of old ones, and an online version of this report can be found at the XTAG web page: http://www.cis.upenn.edu/~xtag}.
Date Posted: 07 August 2006
Comments
University of Pennsylvania Institute for Research in Cognitive Science Technical Report No. IRCS-01-03.