mlsanityData to 14 Oct 2026

NADI 2025: The First Multidialectal Arabic Speech Processing Shared Task

arXiv 2509.02038 ↗First posted 2 Sep 2025cs.CL cs.SDcited by 7

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Abstract (arXiv)

We present the findings of the sixth Nuanced Arabic Dialect Identification (NADI 2025) Shared Task, which focused on Arabic speech dialect processing across three subtasks: spoken dialect identification (Subtask 1), speech recognition (Subtask 2), and diacritic restoration for spoken dialects (Subtask 3). A total of 44 teams registered, and during the testing phase, 100 valid submissions were received from eight unique teams. The distribution was as follows: 34 submissions for Subtask 1 "five teamsae, 47 submissions for Subtask 2 "six teams", and 19 submissions for Subtask 3 "two teams". The best-performing systems achieved 79.8% accuracy on Subtask 1, 35.68/12.20 WER/CER (overall average) on Subtask 2, and 55/13 WER/CER on Subtask 3. These results highlight the ongoing challenges of Arabic dialect speech processing, particularly in dialect identification, recognition, and diacritic restoration. We also summarize the methods adopted by participating teams and briefly outline directions for future editions of NADI.

Key facts. Cited by 7 papers in the map (data through 14 Oct 2026). Builds on 33 of its 85 references that are in the map. First posted on arXiv 2 Sep 2025.

Builds on

33 of 85 references.

References · 33

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  11. 2020NADI 2020: The First Nuanced Arabic Dialect Identification Shared Taskcited by 47
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21 more
  1. 2020Arabic Dialect Identification in the Wildcited by 45
  2. 2020A Panoramic Survey of Natural Language Processing in the Arab Worldcited by 45
  3. 2021NADI 2021: The Second Nuanced Arabic Dialect Identification Shared Taskcited by 32
  4. 2023NADI 2023: The Fourth Nuanced Arabic Dialect Identification Shared Taskcited by 29
  5. 2018Arap-Tweet: A Large Multi-Dialect Twitter Corpus for Gender, Age and Language Variety Identificationcited by 23
  6. 2022NADI 2022: The Third Nuanced Arabic Dialect Identification Shared Taskcited by 23
  7. 2023Dolphin: A Challenging and Diverse Benchmark for Arabic NLGcited by 22
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  14. 2019Neural Arabic Text Diacritization: State of the Art Results and a Novel Approach for Machine Translationcited by 11
  15. 2025Data Quality Issues in Multilingual Speech Datasets: The Need for Sociolinguistic Awareness and Proactive Language Planningcited by 11
  16. 2023Automatic Restoration of Diacritics for Speech Data Setscited by 8
  17. 2024Arabic Diacritics in the Wild: Exploiting Opportunities for Improved Diacritizationcited by 8
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Cited by year (2026 to 14 Oct)

Citing papers per year: 2025: 1; 2026: 6.

7 papers.

  1. 2026Habibi: Laying the Open-Source Foundation of Unified-Dialectal Arabic Speech Synthesiscited by 3
  2. 2025ELYADATA & LIA at NADI 2025: ASR and ADI Subtaskscited by 1
  3. 2026ARCADE: A City-Scale Corpus for Fine-Grained Arabic Dialect Taggingcited by 1
  4. 2026Saar-Voice: A Multi-Speaker Saarbr"ucken Dialect Speech Corpuscited by 0
  5. 2026Constrained CTC Decoding for Efficient Diacritic Restorationcited by 0
  6. 2026BARRAC: Adaptation of an English Aspect-based Sentiment Analysis Approach for Classification Tasks in Arabic Dialectscited by 0
  7. 2026SHAMS: An Audio-Grounded Pronunciation Benchmark for Levantine Arabiccited by 0