Two-stage QLoRA fine-tuning of Qwen3-4B plus retrieval ensemble achieves 32.87 overall score on clinical QA and 67.16 micro-F1 on evidence alignment, highlighting that 20 training cases are insufficient.
For Subtask 3, two-stage QLoRA fine- tuningofQwen3-4BonemrQA-MedSQuADand20 annotated development cases achieves an overall score of32.87on the test-2026 split
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QU-NLP at ArchEHR-QA 2026: Two-Stage QLoRA Fine-Tuning of Qwen3-4B for Patient-Oriented Clinical Question Answering and Evidence Sentence Alignment
Two-stage QLoRA fine-tuning of Qwen3-4B plus retrieval ensemble achieves 32.87 overall score on clinical QA and 67.16 micro-F1 on evidence alignment, highlighting that 20 training cases are insufficient.