Labeled Morphological Segmentation with Semi-Markov Models
Ryan Cotterell, Thomas Müller, Alexander Fraser, Hinrich Schütze · 2015
We present labeled morphological segmentation-an alternative view of morphological processing that unifies several tasks.We introduce a new hierarchy of morphotactic tagsets and CHIPMUNK, a discriminative morphological segmentation system that, contrary to previous work, explicitly models morphotactics.We show improved performance on three tasks for all six languages: (i) morphological segmentation, (ii) stemming and (iii) morphological tag classification.For morphological segmentation our method shows absolute improvements of 2-6 points F 1 over a strong baseline.