Definitional, personal and mechanical constraints on part of speech annotation performance

Babarczy, Anna, Carroll, John and Sampson, Geoffrey (2006) Definitional, personal and mechanical constraints on part of speech annotation performance. Journal of Natural Language Engineering, 12 (1). pp. 77-90. ISSN 1351-3249

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Abstract

For one aspect of grammatical annotation, part-of-speech tagging, we investigate experimentally whether the ceiling on accuracy stems from limits to the precision of tag definition or limits to analysts¿ ability to apply precise definitions, and we examine how analysts¿ performance is affected by alternative types of semi-automatic support. We find that, even for analysts very well-versed in a part-of-speech tagging scheme, human ability to conform to the scheme is a more serious constraint than precision of scheme definition. We also find that although semi-automatic techniques can greatly increase speed relative to manual tagging, they have little effect on accuracy, either positively (by suggesting valid candidate tags) or negatively (by lending an appearance of authority to incorrect tag assignments). On the other hand, it emerges that there are large differences between individual analysts with respect to usability of particular types of semi-automatic support.

Item Type: Article
Schools and Departments: School of Engineering and Informatics > Informatics
Depositing User: John Carroll
Date Deposited: 06 Feb 2012 21:08
Last Modified: 28 Mar 2012 10:40
URI: http://sro.sussex.ac.uk/id/eprint/29715
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