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Jun-Yi Wu

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Preprint Sep 2026

CAST: Reconstruction-Coupled Acceleration of Interactive World Models

It is observed that interaction-induced feature changes correlate with approximation error, while low-frequency interpolation errors are phase-sensitive and show more predictable phase progression, which motivates CAST, a reconstruction-coupled inference framework.

Le-Yang Chen, Jun-Yi Wu, Fan-Qing Kong et al. · 0 citations
Preprint Oct 2026

VASC: Value-Aware Sparse Attention with Cross-Layer Memory for Efficient 3D Reconstruction

Feed-forward 3D vision models such as VGGT have achieved remarkable progress, unifying camera estimation and dense scene reconstruction in a single pass. However, their quadratic global attention makes long image sequences expensive, while existing sparse methods may favor highly attended yet value-redundant regions. T...

Jun-Yi Wu, Fan-Qing Kong, Le-Yang Chen et al. · 0 citations
#artificial intelligence Preprint Sep 2026

JustQuant: You Don't Need Smoothing, SVD, or Rotation for 4-Bit Activation Quantization

JustQuant is proposed, a simple yet effective framework that moves the complexity of low-bit quantization from deployment-time operators into the training process and introduces Theseus QAD, a quantization-aware distillation method that progressively applies multi-level supervision, analogous to the gradual replacement...

Kai-Cheng Yang, Kai-Sen Yang, Chun-Yu Liu et al. · 0 citations
Jul 2026

Factorized Spectral Representations for Reinforcement Learning

FaStR is proposed, which fits this decomposition with a noise contrastive objective, producing separate state, action, and next-state encoders that together form a single spectral representation.

Junyi Wu, Dan Li · 0 citations

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