Abstract
We summarize the strong performance of ParaMor, an unsupervised morphology induction system, at Morpho Challenge 2008. When ParaMor’s morphological analyses, which specialize at identifying inflectional morphology, are added to the analyses from the general-purpose unsupervised morphology induction system, Morfessor, the combined system identifies the morphemes of all five Morpho Challenge languages at recall scores higher than those of any other system which competed in the Challenge. These strong recall scores lead to F1 values for morpheme identification as high as or higher than those of any competing system for all the competition languages but English.
Categories and Subject Descriptors: I.2 [Artificial Intelligence]: I.2.7 Natural Language Processing.
General Terms: Experimentation.
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Bernhard, D.: Simple Morpheme Labeling in Unsupervised Morpheme Analysis. In: Peters, C., Jijkoun, V., Mandl, T., Müller, H., Oard, D.W., Peñas, A., Petras, V., Santos, D. (eds.) CLEF 2007. LNCS, vol. 5152, pp. 873–880. Springer, Heidelberg (2008)
Bernhard, D.: Apprentissage non supervisé de familles morphologiques par classifi-cation ascendante hiérarchique. In: Actes de la 14e conférence sur le Traitement Automati-que des Langues Naturelles, TALN (2007)
Brent, M.R., Murthy, S.K., Lundberg, A.: Discovering Morphemic Suffixes: A Case Study in MDL Induction. In: The Fifth International Workshop on Artificial Intelligence and Statistics (1995)
Comrie, B., Dryer, M.S., Gil, D., Haspelmath, M.: Introduction. In: Haspelmath, M., Dryer, M.S., Gil, D., Comrie, B. (eds.) The World Atlas of Language Structures. Oxford University Press, Oxford (2005)
Creutz, M.: Induction of the Morphology of Natural Language: Unsupervised Mor-pheme Segmentation with Application to Automatic Speech Recognition. Ph.D. Thesis. Computer and Information Science, Report D13. Helsinki: University of Technology, Es-poo, Finland (2006)
Goldsmith, J.: An Algorithm for the Unsupervised Learning of Morphology. Natural Language Engineering 12.4, 335–351 (2006)
Hammarström, H.: Unsupervised Learning of Morphology: Survey, Model, Algorithm and Experiments. Thesis for the Degree of Licentiate of Engineering. Chalmers, Göteborg University (2007)
Harris, Z.: From Phoneme to Morpheme. Language 31.2, 190–222 (1955)
Harris, Z.: Papers in Structural and Transformational Linguists. D. Reidel, Dordrecht (1970)
Kurimo, M., Turunen, V., Varjokallio, M.: Unsupervised Morpheme Analysis – Morpho Challenge (2008), http://www.cis.hut.fi/morphochallenge-2008/ (accessed on: August 11, 2008)
Monson, C.: ParaMor: From Paradigm Structure to Natural Language Morphology Induction. Ph.D. Thesis. Language Technologies Institute, Carnegie Mellon University, Pittsburgh, Pennsylvania (2009)
Schone, P., Jurafsky, D.: Knowledge-Free Induction of Inflectional Morphologies. In: North American Chapter of the Association for Computational Linguistics, NAACL (2001)
Sharma, U., Kalita, J., Das, R.: Unsupervised Learning of Morphology for Building Lexicon for a Highly Inflectional Language. In: The Sixth Workshop of the ACL Special Interest Group in Computational Phonology, SIGPHON (2002)
Snover, M.G.: An Unsupervised Knowledge Free Algorithm for the Learning of Morphology in Natural Languages. M.S. Thesis. Computer Science, Sever Institute of Technology, Washington University, Saint Louis, Missouri (2002)
Stump, G.T.: Inflection. In: Spencer, A., Zwicky, A.M. (eds.) The Handbook of Morphology, Blackwell Publishers Inc., Malden (2001)
Wicentowski, R.: Modeling and Learning Multilingual Inflectional Morphology in a Minimally Supervised Framework. Ph.D. Thesis. Johns Hopkins University, Baltimore, Maryland (2002)
Zeman, D.: Using Unsupervised Paradigm Acquisition for Prefixes. In: Working Notes for the CLEF 2008 Workshop (2008)
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Monson, C., Carbonell, J., Lavie, A., Levin, L. (2009). ParaMor and Morpho Challenge 2008. In: Peters, C., et al. Evaluating Systems for Multilingual and Multimodal Information Access. CLEF 2008. Lecture Notes in Computer Science, vol 5706. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-04447-2_128
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DOI: https://doi.org/10.1007/978-3-642-04447-2_128
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-642-04446-5
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