Building a large syntactically-annotated corpus of Vietnamese

Authors:
Phuong-Thai Nguyen;Xuan-Luong Vu;Thi-Minh-Huyen Nguyen;Van-Hiep Nguyen;Hong-Phuong Le
Affiliations:
College of Technology, VNU;Vietnam Lexicography Centre;University of Natural Sciences, VNU;University of Social Sciences and Humanities, VNU;LORIA/INRIA Lorraine
Venue:
ACL-IJCNLP '09 Proceedings of the Third Linguistic Annotation Workshop
Year:
2009

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Abstract

Treebank is an important resource for both research and application of natural language processing. For Vietnamese, we still lack such kind of corpora. This paper presents up-to-date results of a project for Vietnamese treebank construction. Since Vietnamese is an isolating language and has no word delimiter, there are many ambiguities in sentence analysis. We systematically applied a lot of linguistic techniques to handle such ambiguities. Annotators are supported by automatic-labeling tools and a tree-editor tool. Raw texts are extracted from Tuoi Tre (Youth), an online Vietnamese daily newspaper. The current annotation agreement is around 90 percent.