PAGER: Bridging the Semantic-Execution Gap in Point-Precise Geometric GUI Control

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Hauptverfasser: Wei, Jingxuan, Bai, Xi, Liu, Shan, Jia, Caijun, Sun, Zheng, Xu, Xinglong, Li, Siyuan, Sun, Linzhuang, Yu, Bihui, He, Conghui, Tan, Cheng
Format: Preprint
Veröffentlicht: 2026
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author Wei, Jingxuan
Bai, Xi
Liu, Shan
Jia, Caijun
Sun, Zheng
Xu, Xinglong
Li, Siyuan
Sun, Linzhuang
Yu, Bihui
He, Conghui
Tan, Cheng
author_facet Wei, Jingxuan
Bai, Xi
Liu, Shan
Jia, Caijun
Sun, Zheng
Xu, Xinglong
Li, Siyuan
Sun, Linzhuang
Yu, Bihui
He, Conghui
Tan, Cheng
contents Large vision-language models have significantly advanced GUI agents, enabling executable interaction across web, mobile, and desktop interfaces. Yet these gains largely rely on a forgiving region-tolerant paradigm, where many nearby pixels inside the same component remain valid. Precise geometric construction breaks this assumption: actions must land on points in continuous canvas space rather than tolerant regions. Because geometric primitives carry ontological dependencies, a local coordinate error can induce cascading topological failures that distort downstream objects and invalidate the final construction. We identify this regime as precision-sensitive GUI tasks, requiring point-level accuracy, geometry-aware verification, and robustness to dependency-driven error propagation. To benchmark it, we introduce PAGE Bench, with 4,906 problems and over 224K process-supervised, pixel-level GUI actions. We further propose PAGER, a topology-aware agent that decomposes construction into dependency-structured planning and pixel-level execution. Pixel-grounded supervised tuning establishes executable action grammar, while precision-aligned reinforcement learning mitigates rollout-induced exposure bias through state-conditioned geometric feedback. Experiments reveal a pronounced Semantic-Execution Gap: general multimodal models can exceed 88% action type accuracy yet remain below 6% task success. PAGER closes this gap, delivering 4.1x higher task success than the strongest evaluated general baseline and raising step success rate from below 9% for GUI-specialized agents to over 62%, establishing a new state of the art for point-precise GUI control.
format Preprint
id arxiv_https___arxiv_org_abs_2605_15963
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle PAGER: Bridging the Semantic-Execution Gap in Point-Precise Geometric GUI Control
Wei, Jingxuan
Bai, Xi
Liu, Shan
Jia, Caijun
Sun, Zheng
Xu, Xinglong
Li, Siyuan
Sun, Linzhuang
Yu, Bihui
He, Conghui
Tan, Cheng
Artificial Intelligence
Large vision-language models have significantly advanced GUI agents, enabling executable interaction across web, mobile, and desktop interfaces. Yet these gains largely rely on a forgiving region-tolerant paradigm, where many nearby pixels inside the same component remain valid. Precise geometric construction breaks this assumption: actions must land on points in continuous canvas space rather than tolerant regions. Because geometric primitives carry ontological dependencies, a local coordinate error can induce cascading topological failures that distort downstream objects and invalidate the final construction. We identify this regime as precision-sensitive GUI tasks, requiring point-level accuracy, geometry-aware verification, and robustness to dependency-driven error propagation. To benchmark it, we introduce PAGE Bench, with 4,906 problems and over 224K process-supervised, pixel-level GUI actions. We further propose PAGER, a topology-aware agent that decomposes construction into dependency-structured planning and pixel-level execution. Pixel-grounded supervised tuning establishes executable action grammar, while precision-aligned reinforcement learning mitigates rollout-induced exposure bias through state-conditioned geometric feedback. Experiments reveal a pronounced Semantic-Execution Gap: general multimodal models can exceed 88% action type accuracy yet remain below 6% task success. PAGER closes this gap, delivering 4.1x higher task success than the strongest evaluated general baseline and raising step success rate from below 9% for GUI-specialized agents to over 62%, establishing a new state of the art for point-precise GUI control.
title PAGER: Bridging the Semantic-Execution Gap in Point-Precise Geometric GUI Control
topic Artificial Intelligence
url https://arxiv.org/abs/2605.15963