English to Central Kurdish Speech Translation: Corpus Creation, Evaluation, and Orthographic Standardization

Mohammad Mohammadamini, Daban Jaff, Josep Crego, Marie Tahon, Antoine LAURENT


Abstract
We present KUTED, a speech-to-text translation (S2TT) dataset for Central Kurdish, derived from TED and TEDx talks. The corpus comprises 91,000 sentence pairs, including 170 hours of English audio, 1.65 million English tokens, and 1.40 million Central Kurdish tokens. We evaluate KUTED on the S2TT task and find that orthographic variation significantly degrades Kurdish translation performance, producing nonstandard outputs. To address this, we propose a systematic text standardization approach that yields substantial performance gains and more consistent translations. On a test set separated from TED talks, a fine-tuned Seamless model achieves 15.18 BLEU, and we improve Seamless baseline by 3.0 BLEU on the FLEURS benchmark. We also train a Transformer model from scratch and evaluate a cascaded system that combines Seamless (ASR) with NLLB (MT).
Anthology ID:
2026.lrec-1.436
Volume:
Proceedings of the Fifteenth Language Resources and Evaluation Conference
Month:
May
Year:
2026
Address:
Palma de Mallorca, Spain
Editors:
Stelios Piperidis, Núria Bel, Henk van den Heuvel, Nancy Ide, Simon Krek, Antonio Toral
Venue:
LREC
SIG:
Publisher:
ELRA Language Resource Association
Note:
Pages:
5578–5587
Language:
External URL:
https://lrec.elra.info/lrec2026-main-436
DOI:
10.63317/4jy562hboezr
Bibkey:
Cite (ACL):
Mohammad Mohammadamini, Daban Jaff, Josep Crego, Marie Tahon, and Antoine LAURENT. 2026. English to Central Kurdish Speech Translation: Corpus Creation, Evaluation, and Orthographic Standardization. In Proceedings of the Fifteenth Language Resources and Evaluation Conference, pages 5578–5587, Palma de Mallorca, Spain. ELRA Language Resource Association.
Cite (Informal):
English to Central Kurdish Speech Translation: Corpus Creation, Evaluation, and Orthographic Standardization (Mohammadamini et al., LREC 2026)
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