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Memory-Based Dependency Parsing

This paper reports the results of experiments using memory-based learning to guide a deterministic dependency parser for unrestricted natural language text. Using data from a small treebank of Swedish, memory-based classifiers for predicting the next action of the parser are constructed. The accuracy of a classifier as such is evaluated on held-out data derived from the treebank, and its performance as a parser guide is evaluated by parsing the held-out portion of the treebank. The evaluation shows that memory-based learning gives a significant improvement over a previous probabilistic model based on maximum conditional likelihood estimation and that the inclusion of lexical features improves the accuracy even further.


Joakim Nivre, Johan Hall and Jens Nilsson, Memory-Based Dependency Parsing. In: Proceedings of CoNLL-2004, Boston, MA, USA, 2004, pp. 49-56. [ps] [ps.gz] [pdf] [bibtex]
Last update: May 13, 2003. erikt@uia.ua.ac.be