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Title:Recognising Nested Named Entities in Biomedical Text
Authors: Beatrice Alex ; Barry Haddow ; Claire Grover
Date:Jun 2007
Publication Title:BioNLP workshop at ACL 2007
Publication Type:Conference Paper Publication Status:Published
Page Nos:65-72
Although recent named entity (NE) annotation efforts involve the markup of nested entities, there has been limited focus on recognising such nested structures. This paper introduces and compares three techniques for modelling and recognising nested entities by means of a conventional sequence tagger. The methods are tested and evaluated on two biomedical data sets that contain entity nesting. All methods yield an improvement over the baseline tagger that is only trained on flat annotation.
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Bibtex format
author = { Beatrice Alex and Barry Haddow and Claire Grover },
title = {Recognising Nested Named Entities in Biomedical Text},
book title = {BioNLP workshop at ACL 2007},
publisher = {ACL},
year = 2007,
month = {Jun},
pages = {65-72},
url = {},

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