Active learning with multiple annotations for comparable data classification task

Authors:
Vamshi Ambati;Sanjika Hewavitharana;Stephan Vogel;Jaime Carbonell
Affiliations:
Carnegie Mellon University, Pittsburgh, PA;Carnegie Mellon University, Pittsburgh, PA;Carnegie Mellon University, Pittsburgh, PA;Carnegie Mellon University, Pittsburgh, PA
Venue:
BUCC '11 Proceedings of the 4th Workshop on Building and Using Comparable Corpora: Comparable Corpora and the Web
Year:
2011

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Abstract

Supervised learning algorithms for identifying comparable sentence pairs from a dominantly non-parallel corpora require resources for computing feature functions as well as training the classifier. In this paper we propose active learning techniques for addressing the problem of building comparable data for low-resource languages. In particular we propose strategies to elicit two kinds of annotations from comparable sentence pairs: class label assignment and parallel segment extraction. We also propose an active learning strategy for these two annotations that performs significantly better than when sampling for either of the annotations independently.