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Author

Yu Liu

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Preprint Aug 2026

WorldExam: Benchmarking World Models from Apparent Appearance to Inherent Reactivity

WorldExam is introduced, a hierarchical diagnostic benchmark spanning four levels: Visual Quality, Control Adherence, Spatial Consistency, and World Reactivity, which supports unified evaluation of camera-, action-, and language-driven model paradigms.

Yuxue Yang, Shu-Yao Shang, Jiahe Wang et al. · 2 citations
Preprint Aug 2026

TraceCAD: Trace-Guided Repair for Agentic CAD Generation

The introduction of TraceCAD, a recovery layer that links requested features, modeling steps, failure evidence, and candidate outcomes as persistent state, demonstrates that persistent, localized, and reusable recovery improves final CAD quality and repair reliability.

Fengxiao Fan, Jingzhe Ni, F. Sang et al. · 0 citations
Preprint Aug 2026

CADIR: A Cross-Backend Editable Intermediate Representation for Agentic CAD Generation

CADIR, an agent-friendly executable intermediate representation for CAD generation and cross-backend editing, and a construction-graph retrieval method for text and image queries that supports both full-graph and subgraph retrieval, enabling agents to leverage complete models and modeling substructures.

Yu Liu, Jingzhe Ni, Yi-Ming Chen et al. · 2 citations

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