Author

Sungroh Yoon

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Preprint Sep 2026

ReSS: Residual-Restoring Sparse Attention for 3D Vision Transformers

3D vision transformers such as VGGT predict camera poses and scene geometry from multi-view images in a single forward pass, but their global attention over all concatenated view tokens dominates computation as the number of views grows. To reduce this cost, SparseVGGT and HeSS sparsify attention at the block level, an...

Yongsung Kim, Jaehoon Lee, Minjun Park et al. · 0 citations

Preprint Sep 2026

FoMo: Forking Moment in Generative Trajectory as a Perceptual Distance

Reference-based image quality assessment (IQA) metrics aim to reflect how humans perceive the perceptual distance between a pair of images. To learn how the human visual system (HVS) operates, recent reference-based IQA metrics heavily rely on human-annotated data. Mean opinion score (MOS)-based pointwise scoring, whic...

Jaihyun Lew, Mingi Jung, Minjun Park et al. · 0 citations

#artificial intelligence Jun 2026

Rollout-Level Advantage-Prioritized Experience Replay for GRPO

A rollout-level replay buffer for GRPO is proposed that stores and samples individual rollouts rather than whole groups and bounds staleness through age eviction, and is the only condition with a positive margin over GRPO at every scale.

Gyeongtae Yoo, Sanghyeok Park, Soohyuk Jang et al. · arXiv.org · 2 citations