NYUAD at AraHealthQA Shared Task: Benchmarking the Medical Understanding and Reasoning of Large Language Models in Arabic Healthcare Tasks
Paper · 2025 · Nouar AlDahoul and Yasir Zaki
Summary
The paper asks how well current large language models handle medical questions written in Arabic, a domain where most evaluation resources are English-only. The authors entered the AraHealthQA shared task (MedArabiQ2025 track), which uses an MSA benchmark of 700 clinical items. A further 200 items, half MCQs and half open-ended, were released later for testing. They queried a broad set of models zero-shot with deterministic decoding:
- proprietary systems (GPT-4o, GPT o3, Gemini Flash 2.5 and Pro 2.5, Claude 3 Opus, Grok 3, Deepseek v3, Llama 4 Maverick);
- open Arabic-centric models (Falcon3, Fanar, ALLaM).
Several prompt variants were compared. For multiple-choice items, reasoning-oriented models clearly led. A simple majority vote over GPT o3 and the two Gemini 2.5 models reached 77% accuracy and took first place in the challenge. For open-ended answers, scored with BERTScore, the best result was 0.8644. However, scores clustered tightly, which shows the metric's weak discrimination. The open Arabic models trailed far behind. The work matters as a reference point showing that even top models have clear gaps in Arabic medical knowledge.
Key points
- The dataset contains seven 100-item subsets:
- plain MCQs and bias-injected MCQs;
- fill-in-the-blank with choices and without choices;
- AraMed patient-doctor Q&As;
- grammar-corrected Q&As;
- LLM-modified Q&As meant to counter memorization.
- All runs used zero-shot prompting with temperature 0 and top_p 1. A chain-of-thought MCQ prompt (Prompt 2) generally beat the plain one.
- MCQ accuracy ranged widely:
- Gemini Pro 2.5 scored 76%, GPT o3 and Gemini Flash 2.5 74%, and the majority vote 77%.
- Llama 4 Maverick scored 63%, while GPT-4o-mini and Claude 3 Opus scored 49%.
- Falcon Arabic, tested manually through its web chat, scored 38%.
- Open-ended answers were scored with BERTScore on XLM-RoBERTa-Large:
- Gemini Pro 2.5 reached 0.8644 and GPT-4o-mini 0.8581.
- The winning prompt demanded MSA, medical correctness and brevity.
- Among the open Arabic models, ALLaM led on MCQs (39%; Falcon3 36%, Fanar 31%). Falcon3 led on BERTScore (0.8493).
Interesting ideas
- I1. A plain majority vote among a few strong but different models beat every single model, at almost no engineering cost.
- I2. The benchmark adds perturbed copies of items (bias-injected, LLM-rewritten, grammar-corrected) to tell real reasoning apart from memorized answers.
- I3. Asking the same fill-in-the-blank question with and without answer options separates recognizing an answer from producing one.
- I4. The authors admit that BERTScore packed all systems into a narrow band (about 0.81–0.86), so it barely ranks answers.
- I5. Telling the model to answer briefly, without explanations, raised alignment with reference answers. Graders reward concise outputs that match the reference's form.
For Mova
How these ideas could serve Mova, our small open language model — its files, stages and tests:
- I1 (learn): this supports building silver UD trees and frames from agreement between independent witness parsers. Disagreements can be routed to an LLM teacher tier rather than trusted.
- I2 (learn): rewritten paraphrases of school tests and fables can act as negative controls. A reader that only passes the original wording is relying on surface cues.
- I3 (answer): test readers in both modes. A gap between them reveals whether a failure comes from building the world of the text or from verbalizing the answer.
- I4 (answer): grade free-form answers by matching frames or entities in the meaning graph instead of embedding similarity. This keeps scores discriminative and explainable.
- I5 (back): when generating answers from the graph, emit the minimal phrase that satisfies the question. Justification should be a separate explainable trace, not padding in the answer.
Institutions
Fields, topics and concepts
📚 Shelves 7The field of science this work belongs to (OpenAlex fields).Computer Science · 16,667 worksArtificial Intelligence · 16,194 worksArts and Humanities · 16,039 worksLanguage and Linguistics · 15,891 worksComputer Vision and Pattern Recognition · 2,869 worksMedicine · 241 worksHealth Informatics · 184 works
🧭 Topics 2Research subjects and languages the work is about.Reasoning · 1,426 worksSemitic languages · 2,908 works
Cite
Cite as Nouar AlDahoul and Yasir Zaki. 2025. NYUAD at AraHealthQA Shared Task: Benchmarking the Medical Understanding and Reasoning of Large Language Models in Arabic Healthcare Tasks. Proceedings of The Third Arabic Natural Language Processing Conference: Shared Tasks.
@inproceedings{aldahoul2025nyuad,
title = {{NYUAD at AraHealthQA Shared Task: Benchmarking the Medical Understanding and Reasoning of Large Language Models in Arabic Healthcare Tasks}},
author = {Nouar AlDahoul and Yasir Zaki},
booktitle = {Proceedings of The Third Arabic Natural Language Processing Conference: Shared Tasks},
year = {2025},
doi = {10.18653/v1/2025.arabicnlp-sharedtasks.19},
url = {https://doi.org/10.18653/v1/2025.arabicnlp-sharedtasks.19}
}References
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