Author

Xavier Hu

2 papers indexed here

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Preprint Aug 2026

Task-Adaptive Rubrics for GUI Reward Modeling

Recent studies on GUI agents have increasingly focused on outcome reward modeling, which assigns outcome rewards by judging whether an executed trajectory satisfies the success criteria implied by the user instruction. Existing GUI reward verifiers, however, often under-specify how these criteria should be constructed...

Tao Xiong, Xavier Hu, Wen-Kai Wang et al. · 1 citation

#artificial intelligence Sep 2025

GUI-PRA: Process Reward Agent for GUI Tasks

gui-PRA is introduced, a Process Reward Agent that transforms GUI process evaluation from passive scoring into active investigation, and demonstrates strong competitiveness against fully trained critic models.

Tao Xiong, Xavier Hu, Yurun Chen et al. · arXiv.org · 5 citations