Author

Valentino Sacco

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#artificial intelligence Preprint Oct 2026

PointerBench: A Diagnostic Benchmark for Fine-Grained GUI Grounding

POINTERBENCH is introduced, a diagnostic suite of 1,500 screenshot-instruction pairs probing three complementary capabilities: thin sub-element identification and geometric grounding in spreadsheets, character-level grounding in long-text documents, and mixed GUI grounding across 100 professional applications (POINTERB...

Valentino Sacco, Saurabh Pandey, Alexander Florian Jercher et al. · 0 citations

#artificial intelligence Mar 2026

Describe-Then-Act: Proactive Agent Steering via Distilled Language-Action World Models

DILLO (DIstiLLed Language-ActiOn World Model), a fast steering layer that shifts the paradigm from"simulate-then-act" to"describe-then-act."

Massimiliano Pappa, Luca Romani, Valentino Sacco et al. · arXiv.org · 0 citations