Splitting compounds with ngrams

Naomi Tachikawa Shapiro

[How to correct problems with metadata yourself]


Abstract
Compound words with unmarked word boundaries are problematic for many tasks in NLP and computational linguistics, including information extraction, machine translation, and syllabification. This paper introduces a simple, proof-of-concept language modeling approach to automatic compound segmentation, as applied to Finnish. This approach utilizes an off-the-shelf morphological analyzer to split training words into their constituent morphemes. A language model is subsequently trained on ngrams composed of morphemes, morpheme boundaries, and word boundaries. Linguistic constraints are then used to weed out phonotactically ill-formed segmentations, thereby allowing the language model to select the best grammatical segmentation. This approach achieves an accuracy of ~97%.
Anthology ID:
C16-1061
Volume:
Proceedings of COLING 2016, the 26th International Conference on Computational Linguistics: Technical Papers
Month:
December
Year:
2016
Address:
Osaka, Japan
Editors:
Yuji Matsumoto, Rashmi Prasad
Venue:
COLING
SIG:
Publisher:
The COLING 2016 Organizing Committee
Note:
Pages:
630–640
Language:
URL:
https://aclanthology.org/C16-1061
DOI:
Bibkey:
Cite (ACL):
Naomi Tachikawa Shapiro. 2016. Splitting compounds with ngrams. In Proceedings of COLING 2016, the 26th International Conference on Computational Linguistics: Technical Papers, pages 630–640, Osaka, Japan. The COLING 2016 Organizing Committee.
Cite (Informal):
Splitting compounds with ngrams (Shapiro, COLING 2016)
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PDF:
https://preview.aclanthology.org/teach-a-man-to-fish/C16-1061.pdf