A Polynomial-Time Parsing Algorithm for TT-MCTAG

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A Polynomial-Time Parsing Algorithm for TT-MCTAG
This paper investigates the class of TreeTuple MCTAG with Shared Nodes, TTMCTAG for short, an extension of Tree Adjoining Grammars that has been proposed for natural language processing, in particular for dealing with discontinuities and word order variation in languages such as German. It has been shown that the universal recognition problem for this formalism is NP-hard, but so far it was not known whether the class of languages generated by TT-MCTAG is included in PTIME. We provide a positive answer to this question, using a new characterization of TTMCTAG.
Laura Kallmeyer, Giorgio Satta
Added 16 Feb 2011
Updated 16 Feb 2011
Type Journal
Year 2009
Where ACL
Authors Laura Kallmeyer, Giorgio Satta
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