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Feng Chen

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#artificial intelligence Preprint Oct 2026

HLA-WM: Hybrid Linear Attention for Long-Horizon Video World Models

Long-horizon video world models require persistent memory to preserve scene consistency over extended rollouts. Softmax attention retains the full generation history through a growing KV cache, whereas recurrent linear attention compresses history into fixed-size states with substantially lower memory cost. However, we...

Zhuo-Kun Chen, Feng Chen, Xi Lin et al. · 0 citations
Preprint Sep 2026

ZipTok3D: High-Fidelity 3D Tokenization with Compact Token Prefixes

Compact token sequences are essential for efficient 3D generation. However, existing 3D tokenizers typically organize latent representations either over spatial regions or as fixed-size sets of global tokens, both suffering sharp reconstruction degradation when compressed to extremely low token budgets. In this paper,...

Mingda Lin, Weijie Wang, Zeyu Zhang et al. · 0 citations
Preprint Aug 2026

Block3D: Efficient Text-to-3D Generation via Block-Wise Diffusion

Block3D is proposed, a block-wise diffusion framework that partitions the discrete shape-token sequence into contiguous blocks, generates the blocks autoregressively, and jointly denoises all tokens within the current block and introduces confidence-guided intra-block correction, which revises low-confidence tokens bef...

Bowen Cui, Weijie Wang, Zeyu Zhang et al. · 1 citation
Preprint Aug 2026

Evidence-Driven Dynamic Visual Selector for Efficient Long Video Understanding

A fine-grained dynamic visual selection framework named EviSelect, grounded in the target MLLM internal attention evidence, which efficiently approximate attention maps of the target MLLM using highly compressed visual inputs and sparse attention, well-aligned to the full counterpart.

Bo Zhang, Wenxin Wang, Feng Chen et al. · 0 citations

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