Author

Chang-Xu Shao

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Review Sep 2026

Sample-Guided Exact Top-K Selection for Long-Context Sparse Attention

HPC-Ops Top-K is presented, a sample-guided exact selector for ragged sparse-attention score rows that outperforms the fastest verified external exact baseline and outperforms the fastest verified external exact baseline on indexer scores from Hy4-Preview.

Si-Ran Liu, Ya-Long Xue, Theo Tang et al. · 0 citations