Author

Hang Cheng

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#artificial intelligence Preprint Sep 2026

Vision2CAD: A Visual Agent Harness for Explicit Geometry Referencing and Localization in Parametric CAD Modeling

Generating parametric CAD models requires accurate geometry and stable feature dependencies. Existing methods face challenges in selecting geometric references, interpreting sketch-plane local coordinates, and establishing sketch constraints to projected external geometry. We present Vision2CAD, a visual agent harness...

Xi Cheng, Chen-Xi Zhai, Hang Cheng et al. · 0 citations

#artificial intelligence Preprint Sep 2026

Reason What Matters: Retrieval-Grounded Reasoning for Universal Multimodal Embeddings

Universal multimodal embedding (UME) learns unified representations across modalities, enabling a single model to support diverse retrieval tasks. Recent methods use Chain-of-Thought (CoT) reasoning to better interpret multimodal inputs before generating embeddings for complex retrieval tasks and further optimize this...

Mingzhou Jiang, Pei-Xi Wu, Hang Cheng et al. · 0 citations

Preprint Sep 2026

WISE: World-model-guided Imagination Scheduling for Efficient Post-training of Vision-Language-Action Models

Post-training VLA policies typically rely on supervised fine-tuning with costly expert demonstrations or reinforcement learning with expensive and potentially unstable real-world exploration. World models offer a promising alternative by evaluating candidate behaviors through imagined futures, yet effective post-traini...

Chen-Hao Zhang, Han-Yu Zhao, Hang Cheng et al. · 0 citations