Bhaarat Pachori
2026
Bhramastra at #SMM4H-HeaRD 2026: A Multi-Stage Hunter-Judge Pipeline using DSPy-Optimized LLMs for Multilingual ADE Detection
Bhaarat Pachori
Proceedings of the 11th Social Media Mining for Health Research and Applications (SMM4H-HeaRD 2026) Workshop and Shared Tasks
Bhaarat Pachori
Proceedings of the 11th Social Media Mining for Health Research and Applications (SMM4H-HeaRD 2026) Workshop and Shared Tasks
This paper describes the submission by Team Bhramastra for the #SMM4H-HeaRD 2026 Shared Task 1, focused on personal Adverse Drug Event (ADE) detection in multilingual social media. A decoupled architecture, Hunter-Judge, is proposed to handle extreme class imbalance and linguistic variance across seven languages, including a surprise zero-shot Farsi set. The system employs a fine-tuned multilingual mDeBERTa-v3 model as a high-recall filter (Hunter), followed by a Gemini-2.5-Flash model (Judge) optimized via the DSPy framework for precision-oriented agentic adjudication. By implementing a reasoning protocol grounded in clinical RAG evidence and universal ingredient mapping, the pipeline achieved the highest average F1-score (0.6653) among all teams. Strong zero-shot generalizability on Farsi (F1: 0.5863) was demonstrated, highlighting the effectiveness of medically-grounded adjudication in low-resource contexts.