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Leo Liang

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#natural language process... Preprint Sep 2026

SAS: Simple Attention Sparsification via End-to-End Optimization of Context Ranking

Across reasoning, long-context understanding, and agentic tasks, SAS consistently outperforms trainable sparse attention baselines across attention budgets, with especially large gains under tight budgets, demonstrating more effective context ranking for downstream tasks.

Zhi-Wei Li, Lei Zhu, Hao Gu et al. · 0 citations
Jul 2026

FreqForcing: Autoregressive Long Video Generation via Spectral Self-Anchoring

The proposed FreqForcing is a training-free framework that addresses error accumulation in long-video generation via Spectral Self-Anchoring (SSA), which leverages the low-frequency components of anchor attention to maintain long-horizon visual stability, while preserving dynamic motion through the high-frequency compo...

Jia-Tong Li, Leo Liang, Linghe Kong et al. · 1 citation
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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