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Kemal Oflazer
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Journal Articles
Publisher: Journals Gateway
Computational Linguistics (2008) 34 (4): 627.
Published: 01 December 2008
Journal Articles
Publisher: Journals Gateway
Computational Linguistics (2008) 34 (3): 357–389.
Published: 01 September 2008
Abstract
View articletitled, Dependency Parsing of Turkish
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for article titled, Dependency Parsing of Turkish
The suitability of different parsing methods for different languages is an important topic in syntactic parsing. Especially lesser-studied languages, typologically different from the languages for which methods have originally been developed, pose interesting challenges in this respect. This article presents an investigation of data-driven dependency parsing of Turkish, an agglutinative, free constituent order language that can be seen as the representative of a wider class of languages of similar type. Our investigations show that morphological structure plays an essential role in finding syntactic relations in such a language. In particular, we show that employing sublexical units called inflectional groups , rather than word forms, as the basic parsing units improves parsing accuracy. We test our claim on two different parsing methods, one based on a probabilistic model with beam search and the other based on discriminative classifiers and a deterministic parsing strategy, and show that the usefulness of sublexical units holds regardless of the parsing method. We examine the impact of morphological and lexical information in detail and show that, properly used, this kind of information can improve parsing accuracy substantially. Applying the techniques presented in this article, we achieve the highest reported accuracy for parsing the Turkish Treebank.
Journal Articles
Publisher: Journals Gateway
Computational Linguistics (2003) 29 (4): 515–544.
Published: 01 December 2003
Abstract
View articletitled, Dependency Parsing with an Extended Finite-State Approach
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for article titled, Dependency Parsing with an Extended Finite-State Approach
This article presents a dependency parsing scheme using an extended finite-state approach. The parser augments input representation with “channels” so that links representing syntactic dependency relations among words can be accommodated and iterates on the input a number of times to arrive at a fixed point. Intermediate configurations violating various constraints of projective dependency representations such as no crossing links and no independent items except sentential head are filtered via finite-state filters. We have applied the parser to dependency parsing of Turkish.
Journal Articles
Publisher: Journals Gateway
Computational Linguistics (2000) 26 (1): 1–2.
Published: 01 March 2000