منابع مشابه
Mildly Non-Projective Dependency Grammar
Syntactic representations based on word-to-word dependencies have a long tradition in descriptive linguistics, and receive considerable interest in many computational applications. However, dependency syntax has remained somewhat of an island from a formal point of view, which hampers the exchange of resources and computational methods with other syntactic traditions. In this article, we presen...
متن کاملMildly Non-Projective Dependency Structures
Syntactic parsing requires a fine balance between expressivity and complexity, so that naturally occurring structures can be accurately parsed without compromising efficiency. In dependency-based parsing, several constraints have been proposed that restrict the class of permissible structures, such as projectivity, planarity, multi-planarity, well-nestedness, gap degree, and edge degree. While ...
متن کاملParsing Mildly Non-Projective Dependency Structures
We present novel parsing algorithms for several sets of mildly non-projective dependency structures. First, we define a parser for well-nested structures of gap degree at most 1, with the same complexity as the best existing parsers for constituency formalisms of equivalent generative power. We then extend this algorithm to handle all well-nested structures with gap degree bounded by any consta...
متن کاملDependency Parsing Schemata and Mildly Non-Projective Dependency Parsing
We introduce dependency parsing schemata, a formal framework based on Sikkel’s parsing schemata for constituency parsers, which can be used to describe, analyze, and compare dependency parsing algorithms. We use this framework to describe several well-known projective and non-projective dependency parsers, build correctness proofs, and establish formal relationships between them. We then use th...
متن کاملLexicalized Syntax and Topology for Non-projective Dependency Grammar
We propose a lexicalized formulation of dependency grammar that addresses both immediate dependence and linear precedence. Our approach distinguishes two orthogonal, yet mutually constraining dependency trees: an ID tree of syntactic dependencies and a LP tree of topological dependencies. The ID tree is non-ordered, non-projective and its edges are labeled by grammatical functions. The LP tree ...
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ژورنال
عنوان ژورنال: Computational Linguistics
سال: 2013
ISSN: 0891-2017,1530-9312
DOI: 10.1162/coli_a_00125