A Context-free Approximation of Head-driven Phrase Structure Grammar

Bernd Kiefer; Hans-Ulrich Krieger

A Context-free Approximation of Head-driven Phrase Structure Grammar

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Abstract

We present a context-free approximation of unification-based grammars, such as HPSG or PATR-II. The theoretical underpinning is established through a least fixpoint construction over a certain monotonic function. In order to reach a finite fixpoint, the concrete implementation can be parameterized in several ways , either by specifying a finite iteration depth, by using different restrictors, or by making the symbols of the CFG more complex adding annotations a la GPSG. We also present several methods that speed up the approximation process and help to limit the size of the resulting CF grammar.

Anthology ID:: 2000.iwpt-1.15
Volume:: Proceedings of the Sixth International Workshop on Parsing Technologies
Month:: February 23-25
Year:: 2000
Address:: Trento, Italy
Editors:: Alberto Lavelli, John Carroll, Robert C. Berwick, Harry C. Bunt, Bob Carpenter, Ken Church, Mark Johnson, Aravind Joshi, Ronald Kaplan, Martin Kay, Bernard Lang, Alon Lavie, Anton Nijholt, Christer Samuelsson, Mark Steedman, Oliviero Stock, Hozumi Tanaka, Masaru Tomita, Hans Uszkoreit, K. Vijay-Shanker, David Weir, Mats Wiren
Venue:: IWPT
SIG:: SIGPARSE
Publisher:: Association for Computational Linguistics
Note:
Pages:: 135–146
Language:
URL:: https://aclanthology.org/2000.iwpt-1.15/
DOI:
Bibkey:
Cite (ACL):: Bernd Kiefer and Hans-Ulrich Krieger. 2000. A Context-free Approximation of Head-driven Phrase Structure Grammar. In Proceedings of the Sixth International Workshop on Parsing Technologies, pages 135–146, Trento, Italy. Association for Computational Linguistics.
Cite (Informal):: A Context-free Approximation of Head-driven Phrase Structure Grammar (Kiefer & Krieger, IWPT 2000)
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PDF:: https://aclanthology.org/2000.iwpt-1.15.pdf

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@inproceedings{kiefer-krieger-2000-context,
    title = "A Context-free Approximation of {H}ead-driven {P}hrase {S}tructure {G}rammar",
    author = "Kiefer, Bernd  and
      Krieger, Hans-Ulrich",
    editor = "Lavelli, Alberto  and
      Carroll, John  and
      Berwick, Robert C.  and
      Bunt, Harry C.  and
      Carpenter, Bob  and
      Church, Ken  and
      Johnson, Mark  and
      Joshi, Aravind  and
      Kaplan, Ronald  and
      Kay, Martin  and
      Lang, Bernard  and
      Lavie, Alon  and
      Nijholt, Anton  and
      Samuelsson, Christer  and
      Steedman, Mark  and
      Stock, Oliviero  and
      Tanaka, Hozumi  and
      Tomita, Masaru  and
      Uszkoreit, Hans  and
      Vijay-Shanker, K.  and
      Weir, David  and
      Wiren, Mats",
    booktitle = "Proceedings of the Sixth International Workshop on Parsing Technologies",
    month = feb # " 23-25",
    year = "2000",
    address = "Trento, Italy",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2000.iwpt-1.15/",
    pages = "135--146",
    abstract = "We present a context-free approximation of unification-based grammars, such as HPSG or PATR-II. The theoretical underpinning is established through a least fixpoint construction over a certain monotonic function. In order to reach a finite fixpoint, the concrete implementation can be parameterized in several ways , either by specifying a finite iteration depth, by using different restrictors, or by making the symbols of the CFG more complex adding annotations a la GPSG. We also present several methods that speed up the approximation process and help to limit the size of the resulting CF grammar."
}

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%0 Conference Proceedings
%T A Context-free Approximation of Head-driven Phrase Structure Grammar
%A Kiefer, Bernd
%A Krieger, Hans-Ulrich
%Y Lavelli, Alberto
%Y Carroll, John
%Y Berwick, Robert C.
%Y Bunt, Harry C.
%Y Carpenter, Bob
%Y Church, Ken
%Y Johnson, Mark
%Y Joshi, Aravind
%Y Kaplan, Ronald
%Y Kay, Martin
%Y Lang, Bernard
%Y Lavie, Alon
%Y Nijholt, Anton
%Y Samuelsson, Christer
%Y Steedman, Mark
%Y Stock, Oliviero
%Y Tanaka, Hozumi
%Y Tomita, Masaru
%Y Uszkoreit, Hans
%Y Vijay-Shanker, K.
%Y Weir, David
%Y Wiren, Mats
%S Proceedings of the Sixth International Workshop on Parsing Technologies
%D 2000
%8 feb 23 25
%I Association for Computational Linguistics
%C Trento, Italy
%F kiefer-krieger-2000-context
%X We present a context-free approximation of unification-based grammars, such as HPSG or PATR-II. The theoretical underpinning is established through a least fixpoint construction over a certain monotonic function. In order to reach a finite fixpoint, the concrete implementation can be parameterized in several ways , either by specifying a finite iteration depth, by using different restrictors, or by making the symbols of the CFG more complex adding annotations a la GPSG. We also present several methods that speed up the approximation process and help to limit the size of the resulting CF grammar.
%U https://aclanthology.org/2000.iwpt-1.15/
%P 135-146

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Markdown (Informal)

[A Context-free Approximation of Head-driven Phrase Structure Grammar](https://aclanthology.org/2000.iwpt-1.15/) (Kiefer & Krieger, IWPT 2000)

A Context-free Approximation of Head-driven Phrase Structure Grammar (Kiefer & Krieger, IWPT 2000)

ACL

Bernd Kiefer and Hans-Ulrich Krieger. 2000. A Context-free Approximation of Head-driven Phrase Structure Grammar. In Proceedings of the Sixth International Workshop on Parsing Technologies, pages 135–146, Trento, Italy. Association for Computational Linguistics.