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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 [#!tech-rept95!#]. The English grammar described in this
report is based on the TAG formalism developed in [#!joshi75!#],
which has been extended to include lexicalization ([#!schabes88!#]),
and unification-based feature structures ([#!vijay91!#]). 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, it-clefts, wh-clefts, PRO constructions, noun-noun
modifications, extraposition, determiner sequences, genitives,
negation, noun-verb contractions, sentential adjuncts and imperatives.
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/.
Acknowledgements
We are immensely grateful to Aravind Joshi for supporting this
project.
The following people have contributed to the development of grammars
in the project: Anne Abeille, Jason Baldridge, Rajesh Bhatt, Kathleen
Bishop, Raman Chandrasekar, Sharon Cote, Beatrice Daille, Christine
Doran, Dania Egedi, Tim Farrington, Jason Frank, Caroline Heycock,
Beth Ann Hockey, Roumyana Izvorski, Karin Kipper, Daniel Karp, Seth
Kulick, Young-Suk Lee, Heather Matayek, Patrick Martin, Megan Moser,
Sabine Petillon, Rashmi Prasad, Laura Siegel, Yves Schabes, Victoria
Tredinnick and Raffaella Zanuttini.
The XTAG system has been developed by: Tilman Becker, Richard
Billington, Andrew Chalnick, Dania Egedi, Devtosh Khare, Albert Lee,
David Magerman, Alex Mallet, Patrick Paroubek, Rich Pito, Gilles
Prigent, Carlos Prolo, Anoop Sarkar, Yves Schabes, William Schuler,
B. Srinivas, Fei Xia, Yuji Yoshiie and Martin Zaidel.
We would also like to thank Michael Hegarty, Lauri Karttunen, Anthony
Kroch, Mitchell Marcus, Martha Palmer, Owen Rambow, Philip Resnik,
Beatrice Santorini and Mark Steedman.
In addition, Jeff Aaronson, Douglas DeCarlo, Mark-Jason Dominus, Mark
Foster, Gaylord Holder, David Magerman, Ken Noble, Steven Shapiro and
Ira Winston have provided technical support. Adminstrative support
was provided by Susan Deysher, Carolyn Elken, Jodi Kerper, Christine
Sandy and Trisha Yannuzzi.
This work was partially supported by NSF Grant SBR8920230 and ARO Grant
DAAH0404-94-G-0426.
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XTAG Project
http://www.cis.upenn.edu/~xtag