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Kewei Tu

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#natural language process... Preprint Sep 2026

DA-DLM: Explicitly Modeling Token Dependencies in Diffusion Language Models

DA-DLM is proposed, a model that adapts DAG-based dependency modeling to DLMs'iterative setting through a position-oriented DAG design, and consistently outperforms Block Diffusion, especially under fewer denoising steps, and matches autoregressive models while preserving the parallel generation advantage.

Peng-Yu Ji, Zi-Chen Zhang, Xiang Hu et al. · 0 citations
#natural language process... Preprint Aug 2026

S$^4$R: Selective Sampling, Subspaces, and Sparse Reconstruction for Compressed Long-Context KV Caching

S$^4$R is proposed, which builds low-rank subspaces from selectively sampled tokens and computes attention over a sparsely reconstructed KV representation, combining the efficiency of fixed compression with the adaptability of prompt-dependent methods.

Jialong Han, You Wu, Kewei Tu · 1 citation
Jul 2026

Evolution-Aware MSA Reasoning for Subsampling via Factor Graphs

Experiments show that AP-REASONER outperforms baseline subsamplers on structure-sensitive downstream tasks and enables controllable recovery of alternative protein conformations, highlighting the value of modeling MSA subsampling as a controllable optimization problem, where factor-graph reasoning offers an effective a...

Zhangzhi Xiong, Min-Zhang Li, Hao Yu et al. · 0 citations
Preprint Jul 2026

Hierarchical Sparse Attention Done Right: Toward Infinite Context Modeling

Hierarchical Landmark Sparse Attention is proposed, a chunk-wise sparse attention mechanism that learns chunk selection end-to-end under the language-modeling (LM) loss, enabling long-context LLMs that are both more efficient and more effective on general long-context tasks than their full-attention counterparts.

Xiang Hu, Xinyu Wei, Hao Gu et al. · 3 citations

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