5ting在SemEval-2026任务8中:基于LLM重排序和忠实性控制的强端到端多轮RAG
5ting at SemEval-2026 Task 8: Strong End-to-End Multi-Turn RAG via LLM-Based Reranking and Faithfulness Control
AI总结:
提出5ting系统,结合BGE-M3稠密检索、FAISS索引、双查询合并检索和LLM重排序,通过角色分离生成约束于检索证据,解决多轮RAG中的上下文漂移和幻觉问题。
摘要:
我们介绍了5ting,这是我们为SemEval2026任务8(MTRAGEval)开发的系统,该任务评估多轮检索增强生成(RAG)系统。多轮RAG涉及上下文漂移、不明确指定和幻觉风险。我们的系统结合了BGE-M3稠密检索与FAISS索引、双查询合并检索以及基于LLM的重排序,随后进行角色分离生成,并约束于检索到的证据。检索器在任务A中实现了nDCG@5 = 0.4719,而端到端系统在任务C中排名,谐波得分为0.5597,RL_F = 0.7692。
英文摘要:
We introduce 5ting, our system for the SemEval2026 Task 8 (MTRAGEval), which evaluates multi-turn Retrieval Augmented Generation (RAG) systems. Multi turn RAG involves context drift, under specification, and hallucination risk. Our system combines BGE-M3 dense retrieval with FAISS indexing, dual-query merged retrieval, and LLM based reranking, followed by role separated generation constrained to retrieved evidence. The retriever achieved nDCG@5 = 0.4719 in Task A, while the end to end system ranked in Task C with a harmonic score of 0.5597 and RL_F = 0.7692.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。