Abstract
Argument Mining (AM) is a critical NLP task that remains significantly under-resourced in Arabic. This paper presents $\testtt{STAR-Ar}$, a BERT-BiLSTM-CRF architecture for argument discourse detection and classification, as our system for Daleel 2026, the inaugural Arabic argument mining shared task. The task requires the identification and classification of argumentative discourse units (ADUs) in debate and editorial texts.We jointly model these two objectives as a token-level sequence labeling task using a BERT-BiLSTM-CRF architecture that combines contextual transformer embeddings with structural transition constraints to support accurate span detection. $\testtt{STAR-Ar}$ achieves an F1-score of 72.69 on validation and 73.7 on test data. Our domain-specific analysis shows that models trained exclusively on editorials underperform those trained on debates, a disparity we primarily attribute to the smaller size of the editorial dataset. The code for $\testtt{STAR-Ar}$ is available at ${\href{https://github.com/ENTAILab/daleel_2026_Arabic-Argumentative-Discourse-Mining}{\faGithub~TTLab at Daleel 2026}}$
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Publication details
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Cite this article
APA 7
Verma, B., Abusaleh, A., & Mehler, A. (2026). TTLab at Daleel 2026: STAR-Ar, Sequence Tagging for Argument Recognition in Arabic. https://omanscience.com/en/articles/ttlab-at-daleel-2026-star-ar-sequence-tagging-for-argument-recognition-in-arabic
MLA 9
Verma, Bhuvanesh, et al. "TTLab at Daleel 2026: STAR-Ar, Sequence Tagging for Argument Recognition in Arabic." https://omanscience.com/en/articles/ttlab-at-daleel-2026-star-ar-sequence-tagging-for-argument-recognition-in-arabic.
Chicago (author–date)
Verma, Bhuvanesh, Ali Abusaleh, and Alexander Mehler. 2026. "TTLab at Daleel 2026: STAR-Ar, Sequence Tagging for Argument Recognition in Arabic." https://omanscience.com/en/articles/ttlab-at-daleel-2026-star-ar-sequence-tagging-for-argument-recognition-in-arabic.
Harvard
Verma, B., Abusaleh, A. and Mehler, A. (2026) 'TTLab at Daleel 2026: STAR-Ar, Sequence Tagging for Argument Recognition in Arabic', Available at: https://omanscience.com/en/articles/ttlab-at-daleel-2026-star-ar-sequence-tagging-for-argument-recognition-in-arabic.
Vancouver
Verma B, Abusaleh A, Mehler A. TTLab at Daleel 2026: STAR-Ar, Sequence Tagging for Argument Recognition in Arabic. https://omanscience.com/en/articles/ttlab-at-daleel-2026-star-ar-sequence-tagging-for-argument-recognition-in-arabic
IEEE
B. Verma, A. Abusaleh, and A. Mehler, "TTLab at Daleel 2026: STAR-Ar, Sequence Tagging for Argument Recognition in Arabic," https://omanscience.com/en/articles/ttlab-at-daleel-2026-star-ar-sequence-tagging-for-argument-recognition-in-arabic.