Researchers from DS@GT-ARC have developed a system for the eRisk 2026 Task 3, which involves ranking Reddit sentences based on their relevance to 18 symptoms of attention deficit hyperactivity disorder (ADHD). Due to the absence of annotated training data, the team employed zero-shot experimentation and unsupervised retrieval methods. Their approach combines BM25 retrieval with evidence-aware rescoring, embedding-based reranking, query-prototype expansion, and LLM-based reranking, with the LLM reranker achieving the best official scores. AI
IMPACT Demonstrates LLM reranking effectiveness in zero-shot scenarios for specialized information retrieval tasks.
RANK_REASON Academic paper detailing a system submission for a specific task. [lever_c_demoted from research: ic=1 ai=1.0]
- Adult ADHD Self-Report Scale
- arXiv
- ASRS-v1.1
- attention deficit hyperactivity disorder
- BM25
- eRisk 2026
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