Abstract
This paper deals with the automatic construction of a lemmatizer from a Full Form – Lemma (FFL) training dictionary and with lemmatization of new, in the FFL dictionary unseen, i.e. out-of-vocabulary (OOV) words. Three methods of lemmatization of three kinds of OOV words (missing full forms, unknown words, and compound words) are introduced. These methods were tested on Czech test data. The best result (recall: 99.3 % and precision: 75.1 %) has been achieved by a combination of these methods. The lexicon-free lemmatizer based on the method of lemmatization of unknown words (lemmatization patterns method) is introduced too.
Support for this work was provided by GA AS Czech Republic, project No. 1ET101470416.
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Gaustad, T.: Linguistic knowledge and word sense disambiguation. Groningen Dissertations in Linguistics (2004), ISSN 0928-0030
Kanis, J., Müller, L.: Using the lemmatization technique for phonetic transcription in textto- speech system. In: Text, speech and dialogue, pp. 355–361. Springer, Berlin (2004) ISBN 3-540-23049-1
Krovetz, R.: Viewing morphology as an inference process. In: Horfhage, R., Rasmussen, E., Willett, P. (eds.) Proceedings of the 16th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Pittsburgh, pp. 191–203 (1993)
Monz, C.: From document retrieval to question answering. PhD thesis, Institute for Logic, Language and Computation, University of Amsterdam, Amsterdam (2003)
Daniel Hirschberg’s page: http://www.ics.uci.edu/dan/class/161/notes/6/Dynamic.html
Böhmová, A., Hajič, J., Hajičová, E., Hladká, B.: The Prague Dependency Treebank: Three- Level annotation scenario. In: Abeillé, A. (ed.) Treebanks: Building and using syntactically annotated corpora, Kluwer Academic Publishers, Dordrecht (2001)
Ispell dictionaries and rules files, http://fmg-www.cs.ucla.edu/geoff/ispell-dictionaries.html
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Kanis, J., Müller, L. (2005). Automatic Lemmatizer Construction with Focus on OOV Words Lemmatization. In: Matoušek, V., Mautner, P., Pavelka, T. (eds) Text, Speech and Dialogue. TSD 2005. Lecture Notes in Computer Science(), vol 3658. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11551874_17
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DOI: https://doi.org/10.1007/11551874_17
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