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Erschienen in:
2011 | OriginalPaper | Buchkapitel
Maximum Entropy Model for Disambiguation of Rich Morphological Tags
verfasst von : Mārcis Pinnis, Kārlis Goba
Erschienen in: Systems and Frameworks for Computational Morphology
Verlag: Springer Berlin Heidelberg
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In this work we describe a statistical morphological tagger for Latvian, Lithuanian and Estonian languages based on morphological tag disambiguation. These languages have rich tagsets and very high rates of morphological ambiguity. We model distribution of possible tags with an exponential probabilistic model, which allows to select and use features from surrounding context. Results show significant improvement in error rates over the baseline, the same as the results for Czech. In comparison with the simplified parameter estimation method applied for Czech, we show that maximum entropy weight estimation achieves considerably better results.