@article{vsprefillverticalslashsparseattentionwit,
  title = {VSPrefill: Vertical-Slash Sparse Attention with Lightweight Indexing for Long-Context Prefilling},
  author = {Chen Guanzhong},
  year = {2026},
  eprint = {2603.04460},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2603.04460},
}