Morphological Segmentation Inside-Out
Ryan Cotterell, Arun Kumar, Hinrich Schütze · 2016
Morphological segmentation has traditionally been modeled with non-hierarchical models, which yield flat segmentations as output.In many cases, however, proper morphological analysis requires hierarchical structureespecially in the case of derivational morphology.In this work, we introduce a discriminative, joint model of morphological segmentation along with the orthographic changes that occur during word formation.To the best of our knowledge, this is the first attempt to approach discriminative segmentation with a context-free model.Additionally, we release an annotated treebank of 7454 English words with constituency parses, encouraging future research in this area.1