Morphological Disambiguation of South Sámi with FSTs and Neural Networks

We present a method for conducting morphological disambiguation for South Sámi, which is an endangered language. Our method uses an FST-based morphological analyzer to produce an ambiguous set of morphological readings for each word in a sentence. These readings are disambiguated with a Bi-RNN model...

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Bibliographic Details
Main Authors: Hämäläinen, Mika, Wiechetek, Linda
Format: Article in Journal/Newspaper
Language:unknown
Published: arXiv 2020
Subjects:
Online Access:https://dx.doi.org/10.48550/arxiv.2004.14062
https://arxiv.org/abs/2004.14062
Description
Summary:We present a method for conducting morphological disambiguation for South Sámi, which is an endangered language. Our method uses an FST-based morphological analyzer to produce an ambiguous set of morphological readings for each word in a sentence. These readings are disambiguated with a Bi-RNN model trained on the related North Sámi UD Treebank and some synthetically generated South Sámi data. The disambiguation is done on the level of morphological tags ignoring word forms and lemmas; this makes it possible to use North Sámi training data for South Sámi without the need for a bilingual dictionary or aligned word embeddings. Our approach requires only minimal resources for South Sámi, which makes it usable and applicable in the contexts of any other endangered language as well. : 1st Joint SLTU and CCURL Workshop (SLTU-CCURL 2020)