Abstract
This paper presents simple methods for adding new words to a wordnet. We use the Finnish wordnet, FinnWordNet, as an example. We pay particular attention to high- and medium-frequency words thus far missing from FinnWordNet, and arrive at an estimate for the number of culture-specific words among them. We also find that the majority of the high- and medium-frequency words are compounds, which makes them relatively easy to add by using the head word of a compound to locate hypernym synset candidates. Another goal of ours is to add new synonyms to the existing synsets of FinnWordNet. We present a method that finds candidates for new synonyms from a bilingual lexical resource by exploiting the direct word sense translation correspondences between FinnWordNet and the Princeton WordNet. We apply the method to the interlanguage links between articles on the same topic in the Finnish and English Wikipedias on the one hand, and to the translations in the Finnish and English Wiktionaries on the other, and compare the results.
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Notes
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The list was compiled at CSC in 2004, and it is available online at http://www.csc.fi/tutkimus/alat/kielitiede/taajuussanasto-B9996/view.
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FTC has been compiled by the Research Institute for the Languages in Finland, the Department of General Linguistics of the University of Helsinki and the Foreign Languages Department of the University of Joensuu. More information is available online at http://www.csc.fi/english/research/software/ftc.
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The figures for the English Wikipedia are based on the dump of article contents on 4 August 2011.
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Even with the titles with disambiguation tags included, the intersection of English Wikipedia titles and PWN nouns is still smaller than the 80,295 reported by Navigli and Ponzetto (2010) because we have omitted the titles of disambiguation and redirection pages.
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However, the wordnet words include proper nouns and abbreviations.
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“tour noun”, Stevenson (2010). Helsinki University, 18 October 2011, http://www.oxfordreference.com/views/ENTRY.html?subview=Main&entry=t140.e0873630.
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Acknowledgements
We are grateful to our two reviewers, Prof Lars Borin and Dr Antti Arppe, for their many insightful comments that helped us clarify many of our claims and statements. All remaining errors are of course our own.
We also wish to acknowledge the FIN-CLARIN and META-NORD funding for making this work possible. The META-NORD project has received funding from the European Union’s ICT Policy Support Programme as part of the Competitiveness and Innovation Framework Programme under grant agreement no. 270899.
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Lindén, K., Niemi, J., Hyvärinen, M. (2012). Extending and Updating the Finnish Wordnet. In: Santos, D., Lindén, K., Ng’ang’a, W. (eds) Shall We Play the Festschrift Game?. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-30773-7_7
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