The Nile at NADI 2026 Subtask 1.1: A Two-Phase Acoustic Fine-Tuning Strategy for Robust Dialectal Arabic Speech Recognition

Mahmoud Alshrief; Mohamed Bahgat; Mahmoud Zaher; Sahar Selim

The Nile at NADI 2026 Subtask 1.1: A Two-Phase Acoustic Fine-Tuning Strategy for Robust Dialectal Arabic Speech Recognition

Mahmoud Alshrief, Mohamed Bahgat, Mahmoud Zaher, Sahar Selim

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Abstract

Two-phase Whisper fine-tuning (broad dialect pre-training + low-LR target annealing) reaches 57.0 WER on NADI 2026 Subtask 1.1, with 8 WER points from the schedule alone.

Anthology ID:: 2026.arabicnlp-sharedtasks.5
Volume:: Proceedings of The Fourth Arabic Natural Language Processing Conference: Shared Tasks
Month:: October
Year:: 2026
Address:: Budapest, Hungary
Editors:: Muhammad Abdul-Mageed, Tamer Elsayed, Houda Bouamor, Samhaa El-Beltagy, Hend Al-Khalifa, Ahmed Abdelali, AbdelRahim Elmadany, Abdellah El Mekki, Kareem Darwish, Sakhar Alkhereyf, Hamzah Luqman, Salam Khalifa, Samar Magdy, Zaid Alyafeai, Injy Hamed, Wajdi Zaghouani, Imed Zitouni
Venue:: ArabicNLP
SIG:: SIGARAB
Publisher:: Association for Computational Linguistics
Note:
Pages:: 53–57
Language:
URL:: https://aclanthology.org/2026.arabicnlp-sharedtasks.5/
DOI:
Bibkey:
Cite (ACL):: Mahmoud Alshrief, Mohamed Bahgat, Mahmoud Zaher, and Sahar Selim. 2026. The Nile at NADI 2026 Subtask 1.1: A Two-Phase Acoustic Fine-Tuning Strategy for Robust Dialectal Arabic Speech Recognition. In Proceedings of The Fourth Arabic Natural Language Processing Conference: Shared Tasks, pages 53–57, Budapest, Hungary. Association for Computational Linguistics.
Cite (Informal):: The Nile at NADI 2026 Subtask 1.1: A Two-Phase Acoustic Fine-Tuning Strategy for Robust Dialectal Arabic Speech Recognition (Alshrief et al., ArabicNLP 2026)
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PDF:: https://aclanthology.org/2026.arabicnlp-sharedtasks.5.pdf

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@inproceedings{alshrief-etal-2026-nile,
    title = "The Nile at {NADI} 2026 Subtask 1.1: A Two-Phase Acoustic Fine-Tuning Strategy for Robust Dialectal {A}rabic Speech Recognition",
    author = "Alshrief, Mahmoud  and
      Bahgat, Mohamed  and
      Zaher, Mahmoud  and
      Selim, Sahar",
    editor = "Abdul-Mageed, Muhammad  and
      Elsayed, Tamer  and
      Bouamor, Houda  and
      El-Beltagy, Samhaa  and
      Al-Khalifa, Hend  and
      Abdelali, Ahmed  and
      Elmadany, AbdelRahim  and
      El Mekki, Abdellah  and
      Darwish, Kareem  and
      Alkhereyf, Sakhar  and
      Luqman, Hamzah  and
      Khalifa, Salam  and
      Magdy, Samar  and
      Alyafeai, Zaid  and
      Hamed, Injy  and
      Zaghouani, Wajdi  and
      Zitouni, Imed",
    booktitle = "Proceedings of The Fourth {A}rabic Natural Language Processing Conference: Shared Tasks",
    month = oct,
    year = "2026",
    address = "Budapest, Hungary",
    publisher = "Association for Computational Linguistics",
    url = "https://aclanthology.org/2026.arabicnlp-sharedtasks.5/",
    pages = "53--57",
    ISBN = "979-8-89176-497-2",
    abstract = "Two-phase Whisper fine-tuning (broad dialect pre-training + low-LR target annealing) reaches 57.0 WER on NADI 2026 Subtask 1.1, with 8 WER points from the schedule alone."
}

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%0 Conference Proceedings
%T The Nile at NADI 2026 Subtask 1.1: A Two-Phase Acoustic Fine-Tuning Strategy for Robust Dialectal Arabic Speech Recognition
%A Alshrief, Mahmoud
%A Bahgat, Mohamed
%A Zaher, Mahmoud
%A Selim, Sahar
%Y Abdul-Mageed, Muhammad
%Y Elsayed, Tamer
%Y Bouamor, Houda
%Y El-Beltagy, Samhaa
%Y Al-Khalifa, Hend
%Y Abdelali, Ahmed
%Y Elmadany, AbdelRahim
%Y El Mekki, Abdellah
%Y Darwish, Kareem
%Y Alkhereyf, Sakhar
%Y Luqman, Hamzah
%Y Khalifa, Salam
%Y Magdy, Samar
%Y Alyafeai, Zaid
%Y Hamed, Injy
%Y Zaghouani, Wajdi
%Y Zitouni, Imed
%S Proceedings of The Fourth Arabic Natural Language Processing Conference: Shared Tasks
%D 2026
%8 October
%I Association for Computational Linguistics
%C Budapest, Hungary
%@ 979-8-89176-497-2
%F alshrief-etal-2026-nile
%X Two-phase Whisper fine-tuning (broad dialect pre-training + low-LR target annealing) reaches 57.0 WER on NADI 2026 Subtask 1.1, with 8 WER points from the schedule alone.
%U https://aclanthology.org/2026.arabicnlp-sharedtasks.5/
%P 53-57

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Markdown (Informal)

[The Nile at NADI 2026 Subtask 1.1: A Two-Phase Acoustic Fine-Tuning Strategy for Robust Dialectal Arabic Speech Recognition](https://aclanthology.org/2026.arabicnlp-sharedtasks.5/) (Alshrief et al., ArabicNLP 2026)

The Nile at NADI 2026 Subtask 1.1: A Two-Phase Acoustic Fine-Tuning Strategy for Robust Dialectal Arabic Speech Recognition (Alshrief et al., ArabicNLP 2026)

ACL

Mahmoud Alshrief, Mohamed Bahgat, Mahmoud Zaher, and Sahar Selim. 2026. The Nile at NADI 2026 Subtask 1.1: A Two-Phase Acoustic Fine-Tuning Strategy for Robust Dialectal Arabic Speech Recognition. In Proceedings of The Fourth Arabic Natural Language Processing Conference: Shared Tasks, pages 53–57, Budapest, Hungary. Association for Computational Linguistics.