Jackson L. Lee


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The SIGMORPHON 2022 Shared Task on Cross-lingual and Low-Resource Grapheme-to-Phoneme Conversion
Arya D. McCarthy | Jackson L. Lee | Alexandra DeLucia | Travis Bartley | Milind Agarwal | Lucas F.E. Ashby | Luca Del Signore | Cameron Gibson | Reuben Raff | Winston Wu
Proceedings of the 20th SIGMORPHON workshop on Computational Research in Phonetics, Phonology, and Morphology

Grapheme-to-phoneme conversion is an important component in many speech technologies, but until recently there were no multilingual benchmarks for this task. The third iteration of the SIGMORPHON shared task on multilingual grapheme-to-phoneme conversion features many improvements from the previous year’s task (Ashby et al., 2021), including additional languages, three subtasks varying the amount of available resources, extensive quality assurance procedures, and automated error analyses. Three teams submitted a total of fifteen systems, at best achieving relative reductions of word error rate of 14% in the crosslingual subtask and 14% in the very-low resource subtask. The generally consistent result is that cross-lingual transfer substantially helps grapheme-to-phoneme modeling, but not to the same degree as in-language examples.


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Massively Multilingual Pronunciation Modeling with WikiPron
Jackson L. Lee | Lucas F.E. Ashby | M. Elizabeth Garza | Yeonju Lee-Sikka | Sean Miller | Alan Wong | Arya D. McCarthy | Kyle Gorman
Proceedings of the Twelfth Language Resources and Evaluation Conference

We introduce WikiPron, an open-source command-line tool for extracting pronunciation data from Wiktionary, a collaborative multilingual online dictionary. We first describe the design and use of WikiPron. We then discuss the challenges faced scaling this tool to create an automatically-generated database of 1.7 million pronunciations from 165 languages. Finally, we validate the pronunciation database by using it to train and evaluating a collection of generic grapheme-to-phoneme models. The software, pronunciation data, and models are all made available under permissive open-source licenses.