More than Just Statistical Recurrence: Human and Machine Unsupervised Learning of Māori Word Segmentation across Morphological Processes

Ashvini Varatharaj, Simon Todd


Abstract
Non-Māori-speaking New Zealanders (NMS) are able to segment Māori words in a highly similar way to fluent speakers (Panther et al., 2024). This ability is assumed to derive through the identification and extraction of statistically recurrent forms. We examine this assumption by asking how NMS segmentations compare to those produced by Morfessor, an unsupervised machine learning model that operates based on statistical recurrence, across words formed by a variety of morphological processes. Both NMS and Morfessor succeed in segmenting words formed by concatenative processes (compounding and affixation without allomorphy), but NMS also succeed for words that invoke templates (reduplication and allomorphy) and other cues to morphological structure, implying that their learning process is sensitive to more than just statistical recurrence.
Anthology ID:
2024.sigmorphon-1.3
Volume:
Proceedings of the 21st SIGMORPHON workshop on Computational Research in Phonetics, Phonology, and Morphology
Month:
June
Year:
2024
Address:
Mexico City, Mexico
Editors:
Garrett Nicolai, Eleanor Chodroff, Frederic Mailhot, Çağrı Çöltekin
Venue:
SIGMORPHON
SIG:
SIGMORPHON
Publisher:
Association for Computational Linguistics
Note:
Pages:
20–31
Language:
URL:
https://aclanthology.org/2024.sigmorphon-1.3
DOI:
10.18653/v1/2024.sigmorphon-1.3
Bibkey:
Cite (ACL):
Ashvini Varatharaj and Simon Todd. 2024. More than Just Statistical Recurrence: Human and Machine Unsupervised Learning of Māori Word Segmentation across Morphological Processes. In Proceedings of the 21st SIGMORPHON workshop on Computational Research in Phonetics, Phonology, and Morphology, pages 20–31, Mexico City, Mexico. Association for Computational Linguistics.
Cite (Informal):
More than Just Statistical Recurrence: Human and Machine Unsupervised Learning of Māori Word Segmentation across Morphological Processes (Varatharaj & Todd, SIGMORPHON 2024)
Copy Citation:
PDF:
https://aclanthology.org/2024.sigmorphon-1.3.pdf