Evidence-Grounded Constraint Checking in Construction Documents

Rashid Mushkani; Hugo Berard; Shin Koseki

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arXiv · 2607.29058

Evidence-Grounded Constraint Checking in Construction Documents

Rashid Mushkani·Hugo Berard·Shin Koseki

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Abstract

Professional-document review is a constraint-checking problem in which decisions depend on relations among text, geometry, pages, and document revisions. We present an evidence-grounded pipeline that normalizes extracted facts, executes four-state rules deterministically, retains source spans, and escalates unresolved cases. We evaluate its PDF evidence allocator on 160 reference-based tasks from 29 construction projects using a repeated four-system test and a disjoint two-system breadth extension. In the repeated test, reallocating a four-image budget from retrieved page overviews to one overview and three overlapping tiles improves project-family standardized decision accuracy by 10.6 percentage points (95% project-cluster bootstrap CI: 4.3 to 18.0; exact p = 0.031). This effect does not persist in the broader block: Region-RAG changes accuracy by -4.1 points (95% CI: -10.2 to 1.9; exact p = 0.209), while an equal-image sensitivity favors page breadth. Exact finding-set recovery remains low, false passes remain common, and repeated-run agreement is poorly calibrated. The results identify a resolution-breadth trade-off rather than a universal advantage for region-focused evidence, motivating rule-aware evidence routing and expert review.

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Rashid Mushkani, Hugo Berard, Shin Koseki. 2026-07-31. Evidence-Grounded Constraint Checking in Construction Documents. https://arxiv.org/abs/2607.29058

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