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General Terms Algorithms, Experimentation, Languages

By Daniel Zeman and Univerzita Karlova


This paper describes a rather simplistic method of unsupervised morphological analysis of words in an unknown language. All what is needed is a raw text corpus in the given language. The algorithm looks at words, identifies repeatedly occurring stems and suffixes, and constructs probable morphological paradigms. The paper also describes how this method has been applied to solve the Morpho Challenge 2007 task, and gives the Morpho Challenge results. Although the present work was originally a student project without any connection or even knowledge of related work, its simple approach outperformed, to our surprise, several others in most morpheme segmentation subcompetitions. We believe that there is enough room for improvements that can put the results even higher. Errors are discussed in the paper; together with suggested adjustments in future research

Topics: Morphological analysis, Unsupervised methods
Year: 2008
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