Mildly Context-Sensitive Dependency Languages

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Mildly Context-Sensitive Dependency Languages
Dependency-based representations of natural language syntax require a fine balance between structural flexibility and computational complexity. In previous work, several constraints have been proposed to identify classes of dependency structures that are wellbalanced in this sense; the best-known but also most restrictive of these is projectivity. Most constraints are formulated on fully specified structures, which makes them hard to integrate into models where structures are composed from lexical information. In this paper, we show how two empirically relevant relaxations of projectivity can be lexicalized, and how combining the resulting lexicons with a regular means of syntactic composition gives rise to a hierarchy of mildly context-sensitive dependency languages.
Marco Kuhlmann, Mathias Möhl
Added 29 Oct 2010
Updated 29 Oct 2010
Type Conference
Year 2007
Where ACL
Authors Marco Kuhlmann, Mathias Möhl
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