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Jones Ray

ScholarPulse 日报 2026-09-14

2026-09-14 学术简报:2 篇。SCoRE 通过显式的证据选择与整合机制,将视觉 RAG 中的探索过程与最终推理解耦,缓解了稀疏视觉证据利用不足的问题。

今日速览

序号标题来源日期主题推荐等级
1Navigating Sparse Evidence: Agentic Visual RAG via Explicit Context Selection and ConsolidationarXiv2026-09-14RAG高
2Question’s Gambit: The First Move Matters in Agentic Deep SearcharXiv2026-09-13RAG高

重点论文与技术动态

1. Navigating Sparse Evidence: Agentic Visual RAG via Explicit Context Selection and Consolidation

一句话结论

SCoRE 通过显式的证据选择与整合机制,将视觉 RAG 中的探索过程与最终推理解耦,缓解了稀疏视觉证据利用不足的问题。

核心内容

方法与数据

价值判断

摘要 Visual Retrieval-Augmented Generation (VRAG) empowers models to navigate and answer queries about visually rich documents by retrieving relevant page images as visual evidence and reasoning over their content. However, effectively utilizing this visual evidence is usually impeded by two main challenges. First, answer-relevant evidence is sparse and may be concentrated in a small region of one page or dispersed across multiple pages. Second, existing agentic methods often generate answers based on raw exploration trajectories or compressed textual memories rather than an explicitly organized set of supporting images, making answers susceptible to exploration noise and obscuring the evidence-backed reasoning trace. We argue that the bottleneck lies not only in evidence discovery but also in its preservation and organization before answer generation. We propose SCoRE (Selection and Consolidation for Robust Evidence), a unified agent loop for explicit evidence selection and consolidation. During exploration, SCoRE retains only query-relevant observations and their source pointers in a maintained textual ledger, preserving earlier evidence while keeping the visual context bounded. At termination, it reloads the referenced original images and consolidates the visual evidence for answering, arranging it into a logical sequence. This decouples final reasoning from exploratory trial-and-error while ensuring strict visual grounding via indexed claim-to-image linkages. To enable end-to-end optimization of this unified rollout, our training paradigm combines filtered cold-start trajectory distillation with evidence-aware reinforcement learning, whose reward promotes evidence coverage, consolidation compactness, and answer correctness.

一句话结论

深度研究代理的首次检索动作是决定最终表现的关键设计决策,Question’s Gambit 通过优化首步检索将答案准确率从 83.1% 提升至 90.5%。

核心内容

方法与数据

价值判断

摘要 Deep research agents answer complex questions through iterative loops of searching, reading, and reasoning. Recent work on reasoning-intensive benchmarks such as BrowseComp-Plus shows that well-configured lexical retrieval can surface high-quality evidence, yet agents may still fail to connect documents carrying evidence to the gold documents. We identify a deep research agent's first retrieval move as an important design decision for this setting. We introduce Question's Gambit, a first-move retrieval module that decomposes the question into a set of clues, reformulates them into complementary searches, consolidates the retrieved results, and reranks the candidate pool before the agent begins its iterative search-and-reasoning process. This produces an opening context designed to support both clue aggregation and final-answer verification. We further evaluate on MultiHop-RAG to test whether these benefits transfer beyond BrowseComp-Plus to a more conventional multi-hop question structure. Experiments on BrowseComp-Plus show that Question's Gambit improves retrieval recall and downstream agent accuracy over strong baselines, improving answer accuracy from 83.1% to 90.5% with gpt-5.5 over Pi-Serini, the strongest reported agentic baseline. Our results confirm that effective agentic deep research depends not only on the tools available inside the loop, but also on the quality of the first move. We published our implementation publicly at https://github.com/radinhamidi/Question-s-Gambit.