A high-performance semi-supervised learning method for text chunking

Rie Kubota Ando, Tong Zhang
2005 Proceedings of the 43rd Annual Meeting on Association for Computational Linguistics - ACL '05  
In machine learning, whether one can build a more accurate classifier by using unlabeled data (semi-supervised learning) is an important issue. Although a number of semi-supervised methods have been proposed, their effectiveness on NLP tasks is not always clear. This paper presents a novel semi-supervised method that employs a learning paradigm which we call structural learning. The idea is to find "what good classifiers are like" by learning from thousands of automatically generated auxiliary
more » ... lassification problems on unlabeled data. By doing so, the common predictive structure shared by the multiple classification problems can be discovered, which can then be used to improve performance on the target problem. The method produces performance higher than the previous best results on CoNLL'00 syntactic chunking and CoNLL'03 named entity chunking (English and German).
doi:10.3115/1219840.1219841 dblp:conf/acl/AndoZ05 fatcat:b222o7nponbn3dqifbdci5ng2i