Comparing rule-based and SMT-based spelling normalisation for English historical texts


Schneider, Gerold ; Pettersson, Eva ; Percillier, Michael



URL: http://www.ep.liu.se/ecp/133/008/ecp17133008.pdf
Additional URL: http://aclweb.org/anthology/W17-05
Document Type: Conference or workshop publication
Year of publication: 2017
Book title: Proceedings of the NoDaLiDa 2017 Workshop on Processing Historical Language : 22 May 2017, Gothenburg
The title of a journal, publication series: NEALT Proceedings Series
Volume: 32
Page range: 40-46
Conference title: NoDaLiDa 2017 Workshop on Processing Historical Language
Location of the conference venue: Göteburg, Sweden
Date of the conference: 22.05.2017
Publisher: Bouma, Gerlof
Place of publication: Linköping
Publishing house: Linköping University Electronic Press
ISBN: 978-91-7685-503-4
ISSN: 1650-3686 , 1650-3740
Publication language: English
Institution: School of Humanities > Anglistik IV - Anglistische Linguistik/Diachronie (Trips 2006-)
Subject: 420 English
Abstract: To be able to use existing natural language processing tools for analysing historical text, an important preprocessing step is spelling normalisation, converting the original spelling to present-day spelling, before applying tools such as taggers and parsers. In this paper, we compare a probablistic, language-independent approach to spelling normalisation based on statistical machine translation (SMT) techniques, to a rule-based system combining dictionary lookup with rules and non-probabilistic weights. The rule-based system reaches the best accuracy, up to 94% precision at 74% recall, while the SMT system improves each tested period.
Additional information: Linköping Electronic Conference Proceedings ; 133. - Online-Ressource




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