License: Creative Commons Attribution 3.0 Unported license (CC BY 3.0)
When quoting this document, please refer to the following
DOI: 10.4230/LIPIcs.FSCD.2017.22
URN: urn:nbn:de:0030-drops-77387
URL: http://dagstuhl.sunsite.rwth-aachen.de/volltexte/2017/7738/
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Kanovich, Max ; Kuznetsov, Stepan ; Morrill, Glyn ; Scedrov, Andre

A Polynomial-Time Algorithm for the Lambek Calculus with Brackets of Bounded Order

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LIPIcs-FSCD-2017-22.pdf (0.6 MB)

Abstract

Lambek calculus is a logical foundation of categorial grammar, a linguistic paradigm of grammar as logic and parsing as deduction. Pentus (2010) gave a polynomial-time algorithm for determining provability of bounded depth formulas in L*, the Lambek calculus with empty antecedents allowed. Pentus' algorithm is based on tabularisation of proof nets. Lambek calculus with brackets is a conservative extension of Lambek calculus with bracket modalities, suitable for the modeling of syntactical domains. In this paper we give an algorithm for provability in Lb*, the Lambek calculus with brackets allowing empty antecedents. Our algorithm runs in polynomial time when both the formula depth and the bracket nesting depth are bounded. It combines a Pentus-style tabularisation of proof nets with an automata-theoretic treatment of bracketing.

BibTeX - Entry

@InProceedings{kanovich_et_al:LIPIcs:2017:7738,
  author =	{Max Kanovich and Stepan Kuznetsov and Glyn Morrill and Andre Scedrov},
  title =	{{A Polynomial-Time Algorithm for the Lambek Calculus with Brackets of Bounded Order}},
  booktitle =	{2nd International Conference on Formal Structures for Computation and Deduction (FSCD 2017)},
  pages =	{22:1--22:17},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-047-7},
  ISSN =	{1868-8969},
  year =	{2017},
  volume =	{84},
  editor =	{Dale Miller},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{http://drops.dagstuhl.de/opus/volltexte/2017/7738},
  URN =		{urn:nbn:de:0030-drops-77387},
  doi =		{10.4230/LIPIcs.FSCD.2017.22},
  annote =	{Keywords: Lambek calculus, proof nets, Lambek calculus with brackets, categorial grammar, polynomial algorithm}
}

Keywords: Lambek calculus, proof nets, Lambek calculus with brackets, categorial grammar, polynomial algorithm
Collection: 2nd International Conference on Formal Structures for Computation and Deduction (FSCD 2017)
Issue Date: 2017
Date of publication: 30.08.2017

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