Modeling GUI elements as Gaussian distributions instead of binary targets yields 92.0% (ScreenSpot), 93.3% (ScreenSpot-v2), and 47.5% (ScreenSpot-Pro) for a 7B model, outperforming UI-TARS-72B by a relative 24.7% on the professional-software benchmark.
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GUI-G$^2$: Gaussian Reward Modeling for GUI Grounding
Modeling GUI elements as Gaussian distributions instead of binary targets yields 92.0% (ScreenSpot), 93.3% (ScreenSpot-v2), and 47.5% (ScreenSpot-Pro) for a 7B model, outperforming UI-TARS-72B by a relative 24.7% on the professional-software benchmark.