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6-GRAM Language Model in Icelandic for NeMo (Binary Format) 22.06
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Authors : Carlos Daniel Hernández Mena (carlosm@ru.is).
Language : Icelandic.
Recommended use : speech recognition.
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Description
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"6-GRAM Language Model in Icelandic for NeMo (Binary Format) 22.06" is a
word level n-gram language model in binary format suitable for recognizers
based on the NVIDIA-NeMo framework [1].
This language model was originally created to be used in the field of
Automatic Speech Recognition (ASR). In specific, it was designed for the
following NeMo recipe, developed by the Language and Voice Lab (LVL) at
Reykjavík University in 2022:
https://github.com/cadia-lvl/samromur-asr/tree/n5_samromur/n5_samromur
Nevertheless, due to the flexibility of this kind of resources and their
possible application in other tasks, systems or code recipes; it was
decided to publish this model as an independent item.
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The Language Model
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The language model was created using the Icelandic Gigaword Corpus [2]. The
Gigaword corpus contains text from newspaper articles, parliamentary speeches,
adjudications, books, transcribed radio/television news and more. The
normalization process of the sentences utilized to generate the language
model includes to allowing only characters belonging to the Icelandic alphabet,
expanding numbers and abbreviations, and removing punctuation marks [3]. The
resulting text has a length of more than 44 million lines of text (5.3GB
approximately), and it was used to create a pruned 6-gram language model with
the SRILM toolkit [4].
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Citation
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When publishing results based on the models please refer to:
Mena, Carlos; "6-GRAM Language Model in Icelandic for NeMo (Binary Format)
22.06". Web Download. Reykjavik University: Language and Voice Lab, 2022.
Contact: Carlos Mena (carlosm@ru.is)
License: CC BY 4.0
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Acknowledgements
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This initiative was funded by the Language Technology Programme for Icelandic
2019-2023. The programme, which is managed and coordinated by Almannarómur,
is funded by the Icelandic Ministry of Education, Science and Culture.
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References
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[1] Kuchaiev, O., Li, J., Nguyen, H., Hrinchuk, O., Leary, R., Ginsburg,
B., ... & Cohen, J. M. (2019). Nemo: a toolkit for building ai
applications using neural modules. arXiv preprint arXiv:1909.09577.
[2] Steingrímsson, S., Helgadóttir, S., Rögnvaldsson, E., Barkarson, S.,
& Guðnason, J. (2018, May). Risamálheild: A very large Icelandic text
corpus. In Proceedings of the Eleventh International Conference on
Language Resources and Evaluation (LREC 2018).
[3] Nikulásdóttir, A. B., Helgadóttir, I. R., Pétursson, M., & Guðnason,
J. (2018, May). Open ASR for Icelandic: Resources and a baseline system.
In Proceedings of the Eleventh International Conference on Language
Resources and Evaluation (LREC 2018).
[4] Stolcke, A. (2002). SRILM-an extensible language modeling toolkit. In
Seventh international conference on spoken language processing.
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