Hybrid text chunking

Authors:
GuoDong Zhou;Jian Su;TongGuan Tey
Affiliations:
Kent Ridge Digital Labs, Singapore;Kent Ridge Digital Labs, Singapore;Kent Ridge Digital Labs, Singapore
Venue:
ConLL '00 Proceedings of the 2nd workshop on Learning language in logic and the 4th conference on Computational natural language learning - Volume 7
Year:
2000

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Abstract

This paper proposes an error-driven HMM-based text chunk tagger with context-dependent lexicon. Compared with standard HMM-based tagger, this tagger incorporates more contextual information into a lexical entry. Moreover, an error-driven learning approach is adopted to decrease the memory requirement by keeping only positive lexical entries and makes it possible to further incorporate more context-dependent lexical entries. Finally, memory-based learning is adopted to further improve the performance of the chunk tagger.