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Lingua-Align: An Experimental Toolbox for Automatic Tree-to-Tree Alignment
Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Languages, Department of Linguistics and Philology.
2010 (English)In: Proceedings of the 7th International Conference on Language Resources and Evaluation (LREC’2010), European Language Resources Association (ELRA) , 2010Conference paper (Refereed)
Abstract [en]

In this paper we present an experimental toolbox for automatic tree-to-tree alignment based on local classification and alignment inference. The aligner implements a recurrent architecture for structural prediction using history features and a sequential classification procedure. The discriminative base classifier uses a log-linear model which enables simple integration of various features extracted from the data. The Lingua-Align toolbox provides a flexible framework for feature extraction including contextual properties and implements several alignment inference procedures. Various settings and constraints can be controlled via a simple frontend or called from external scripts. Lingua-Align supports different treebank formats and includes additional tools for conversion and evaluation. In our experiments we can show that our tree aligner produces results with high quality and outperforms unsupervised techniques proposed otherwise. It also integrates well with another existing tool for manual tree alignment which makes it possible to quickly integrate additional training material and to run semi-automatic alignment strategies.

Place, publisher, year, edition, pages
European Language Resources Association (ELRA) , 2010.
Keyword [en]
tree alignment, parallel treebanks
National Category
Language Technology (Computational Linguistics) Language Technology (Computational Linguistics)
Research subject
Computational Linguistics
URN: urn:nbn:se:uu:diva-126393ISBN: 2-9517408-6-7OAI: oai:DiVA.org:uu-126393DiVA: diva2:323710
LREC 2010, Malta, 17-23 May 2010.
Available from: 2010-06-11 Created: 2010-06-11 Last updated: 2011-08-26Bibliographically approved

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