arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2610.14207cs.CVcs.LG

面向3D场景 grounding视觉语言模型的 token 预算候选检索:类别名称与成对几何

Token-Budgeted Candidate Retrieval for 3D Scene-Grounded VLMs: Category Names vs. Pairwise Geometry

AGH University of Krakow(克拉科夫AGH科技大学);SoftServe(SoftServe公司);ETH Zurich(苏黎世联邦理工学院)

Michał Zakrzewski, Mariia Shpir, Taras Rumezhak

AI总结:

该研究针对固定上下文预算下3D场景 grounding VLM的候选检索问题,对比类别名称与成对几何的效果,提出含QCRR的检索方案,发现语义检索优于手动几何方法,将发布相关工具支持新选择器替换。

摘要:

在固定上下文预算下,面向3D场景 grounding的视觉语言模型(VLM)应优先查看哪些物体和关系?在ScanNet室内指代表基准(Dai等人,2017)上,在所有报告的K值下,将查询与物体类别名称匹配的表现均优于成对几何评分,且在高召回率时差距最大。分析得出的成对线索优于单物体线索评分和与查询无关的k近邻图,包括在释义上的表现;MiniLM和BGE-small在这些划分上的评分仍更高。我们评估了带 token 预算的候选检索,采用轴对齐框、token 比例指标、无训练基线、两个将查询与每个物体类别名称匹配的小型编码器,以及QCRR(Query-Conditioned Relation Retrieval,即查询条件关系检索)这一确定性成对几何评分器。在ScanRefer的gt_val划分,以及Nr3D和Sr3D的自定义20%扫描ID划分(共35504个查询,非官方ReferIt3D验证集)上,加性名词匹配在ScanRefer上的R@10达到0.864,而QCRR为0.626;MiniLM和BGE-small在ScanRefer上达到0.911至0.913,在Nr3D上达到0.941至0.947。修正后的3DGraphLLM工具(在完整图上的原生Acc@0.25为0.67,n=300个ScanRefer查询)显示,在匹配物体预算下,上下文选择会改变下游准确率:随机选择为0.44,QCRR为0.56,MiniLM为0.67,最优为0.70;在该工具上,语义检索优于手动设计的几何方法。我们将发布该协议、检索器实现和每个查询的输出,以便无需重写分析即可替换新的选择器。

英文摘要:

Under a fixed context budget, which objects and relations should a 3D scene-grounded VLM see first? On ScanNet indoor referring benchmarks (Dai et al., 2017), matching the query to object category names outperforms pairwise geometry scoring at every reported K. The gaps are largest at high recall. Analytic pairwise cues beat per-object cue scoring and query-agnostic kNN graphs, including on paraphrases. MiniLM and BGE-small still score higher on those splits. We evaluate token-budgeted candidate retrieval with axis-aligned boxes, a token-ratio metric, training-free baselines, two small encoders that match q to each object's category name, and QCRR (Query-Conditioned Relation Retrieval), a deterministic pairwise-geometry scorer. Across ScanRefer gt_val plus a custom 20% scan-id split of Nr3D and Sr3D (35,504 queries; not official ReferIt3D val), additive noun matching reaches R@10 0.864 on ScanRefer against QCRR's 0.626; MiniLM and BGE-small reach 0.911 to 0.913 on ScanRefer and 0.941 to 0.947 on Nr3D. A corrected 3DGraphLLM harness (native Acc@0.25 0.67 on the full graph, n=300 ScanRefer queries) shows that context selection changes downstream accuracy under a matched object budget (Random 0.44, QCRR 0.56, MiniLM 0.67, oracle 0.70). Semantic retrieval beats hand-designed geometry on that harness. We will release the protocol, retriever implementations, and per-query outputs so new selectors can be swapped in without rewriting the analysis.

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。

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