Do POS Tags Help to Learn Better Morphological Segmentations
Kairit Sirts, Mark S. Johnson · 2015
The utility of using morphological features in part-of-speech (POS) tagging is well es-tablished in the literature. However, the usefulness of exploiting information about POS tags for morphological segmentation is less clear. In this paper we study the POS-dependent morphological segmenta-tion in the Adaptor Grammars framework. We experiment with three different scenar-ios: without POS tags, with gold-standard tags and with automatically induced tags, and show that the segmentation F1-score improves when the tags are used. We show that the gold-standard tags lead to the biggest improvement as expected. How-ever, using automatically induced tags also brings some improvement over the tag-independent baseline. 1