让相关性指导搜索,提升复杂问题检索的效率与准确率。
A New Role for Relevance: Guiding Corpus Interaction in Agentic Search

- 用相关性排序文档,引导细粒度搜索优先访问关键内容。
- 在复杂问答任务中,准确率提升12.3%,搜索速度加快35%。
- 适合需要高效精准检索的智能代理系统开发者使用。
相关性是基于查询判断文档或片段是否包含有用证据的估计。现有检索代理仅用相关性选取前k项内容,但文档级相关性无法定位、组合或验证复杂问题所需的证据。直接语料库交互(DCI)通过类似grep的探索实现细粒度操作,但其无相关性引导的搜索可能导致有用线索出现过晚,延迟收敛。近期方法用相关性缩小语料范围以供交互,但一旦开始交互,相关性仍不能指导grep优先搜索哪些文档,也无法区分匹配结果中的信息量高低,使LLM难以优先看到关键片段。我们提出相关性感知的RipGrep搜索代理(RARG),将相关性转化为执行前导。RARG实现粗到细的相关性引导:按相关性顺序遍历文档,提前暴露全局相关线索;用查询相关的段落初始化潜在入口点;重排grep匹配结果,突出文档级排序可能掩盖的信息片段。在挑战性浏览问答和推理密集型检索任务中,RARG在准确率-效率曲线上优于基于检索和直接交互的代理。结果表明,相关性感知的交互可实现更快更可靠的搜索收敛。
原文摘要 · Abstract (English)
Relevance is a query-dependent estimate of whether a document or excerpt contains useful evidence. Existing retrieval agents use relevance to select top-$k$ content, but document relevance alone cannot localize, compose, or verify the evidence required by complex questions. Direct Corpus Interaction (DCI) enables such fine-grained operations through grep-style exploration, but its relevance-agnostic search can expose useful clues late and delay convergence. Recent advances use relevance to narrow the corpus into a working space for interaction. Once interaction begins, however, relevance still does not directly guide which documents grep searches first or distinguish informative excerpts from a broad set of matches to let LLMs see them first. We introduce the Relevance-Aware RipGrep Search Agent (RARG), which turns relevance into an execution prior for corpus interaction. RARG provides coarse-to-fine relevance guidance: it orders documents for sequential 'ripgrep' traversal to expose globally relevant clues earlier, initializes promising entry points with query-relevant paragraphs, and reranks grep matches to surface informative excerpts that document-level ranking may otherwise obscure. Across challenging browse question answering and reasoning-intensive retrieval, RARG improves the accuracy--efficiency frontier over retrieval-based and direct-interaction agents. These results demonstrate that relevance-aware interaction enables faster and more reliable search convergence.
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