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Dependency Chart Parsing Algorithm Based on Ternary-Span Combination

Meixun JIN, Yong-Hun LEE, Jong-Hyeok LEE

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Summary :

This paper presents a new span-based dependency chart parsing algorithm that models the relations between the left and right dependents of a head. Such relations cannot be modeled in existing span-based algorithms, despite their popularity in dependency corpora. We address this problem through ternary-span combination during the subtree derivation. By modeling the relations between the left and right dependents of a head, our proposed algorithm provides a better capability of coordination disambiguation when the conjunction is annotated as the head of the left and right conjuncts. This eventually leads to state-of-the-art performance of dependency parsing on the Chinese data of the CoNLL shared task.

Publication
IEICE TRANSACTIONS on Information Vol.E96-D No.1 pp.93-101
Publication Date
2013/01/01
Publicized
Online ISSN
1745-1361
DOI
10.1587/transinf.E96.D.93
Type of Manuscript
PAPER
Category
Natural Language Processing

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