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P2H: Efficient Distance Querying on Road Networks by Projected Vertex Separators

Summary: P2H uses projected vertex separators to shrink 2-hop distance labels on road networks. Optimized separator selection and index maintenance for dynamic weights yield smaller indexes and ~2× faster queries on large datasets. (summarized by gpt-5-nano on Feb 09 2026)

Paper ID
6332
Venue
SIGMOD
Year
2021
Pagerank
8.0110616e-05
Overall Rank
2,871 | 80.31%
DOI
10.1145/3448016.3459245

Incoming Non-self Citations Over Time

Authors

BibTeX Citation

@inproceedings{chen_sigmod21,
        title = {{P2H: Efficient Distance Querying on Road Networks by Projected Vertex Separators}},
        author = {Chen, Zitong and Fu, Ada Wai-Chee and Jiang, Minhao and Lo, Eric and Zhang, Pengfei},
        series = {{SIGMOD} '21},
        booktitle = {Proceedings of the {ACM} {SIGMOD} International Conference on Management of Data},
        publisher = {Association for Computing Machinery},
        doi = {10.1145/3448016.3459245},
        url = {https://dl.acm.org/doi/10.1145/3448016.3459245},
        year = {2021}
}

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