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Qing-Guo Chen

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#artificial intelligence Preprint Sep 2026

PACE: Progressive Angular-to-Norm Contrastive Embedding

This paper proposes PACE, a two-stage framework that progressively expands both the representation and trainable parameter spaces, and introduces Focal Embedding Loss, a confidence-adaptive objective that downweights queries with high positive retrieval confidence while emphasizing ambiguous queries with competitive ne...

Yan-Ping Li, Wei Zhou, Ya-Wen Liu et al. · 1 citation
Preprint Aug 2026

Test-Time Scaling for Video Diffusion Models via Diagnosis-Guided Candidate Recycling

Recent video diffusion models have achieved remarkable generation quality, but high-fidelity results still largely depend on closed-source systems or costly large-scale infrastructure. Test-time scaling (TTS) offers a training-free way to improve lightweight generators by spending additional inference compute, yet exis...

Hangzhou He, Lun-Hao Duan, Shan-Shan Zhao et al. · 0 citations
Preprint Aug 2026

D2-ScaleAgent: Dual-Dimensional Scaling for Long Document Understanding

The core of D2-ScaleAgent is a Verifier agent-driven dynamic routing loop based on the intrinsic difficulty of the query, centered around a continuously updated evidence bank that serves as the agent's dynamic working memory.

Hao Zhang, Longrong Yang, Lun-Hao Duan et al. · 0 citations
Preprint Jul 2026

OvisOCR2 Technical Report

This work introduces OvisOCR2, a 0.8B document parsing model designed as an end-to-end parser that combines filtered real-document annotations with synthetic pages whose rendered images and Markdown targets are derived from the same HTML source.

Shiyin Lu, Yinglun Li, Yu Xia et al. · 1 citation

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