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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
h3111259116b589db
Venue
SIGMOD
Year
2021
Pagerank
7.8314485e-05
Overall Rank
2,943 | 80.22%
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}
}

Incoming Citations (Sorted by Pagerank)

Showing 13 of 13 citing papers.

Rank Citing Paper Year Venue Pagerank
3,687 Relative Subboundedness of Contraction Hierarchy and Hierarchical 2-Hop Index in Dynamic Road Networks 2022 SIGMOD 7.0955331e-05
5,336 Efficient Shortest Path Counting on Large Road Networks 2022 VLDB 6.1747873e-05
6,408 Hierarchical Cut Labelling – Scaling Up Distance Queries on Road Networks 2023 SIGMOD 5.7942038e-05
9,799 Dual-Hierarchy Labelling: Scaling Up Distance Queries on Dynamic Road Networks 2025 SIGMOD 5.1257999e-05
10,004 PCSP: Efficiently Answering Label-Constrained Shortest Path Queries in Road Networks 2024 VLDB 5.0979044e-05
10,564 Efficient Exact Resistance Distance Computation on Small-Treewidth Graphs: a Labelling Approach 2026 SIGMOD 4.9793485e-05
11,204 Divide-and-Conquer: Scalable Shortest Path Counting on Large Road Networks 2025 SIGMOD 4.9793485e-05
11,205 Efficient Indexing for Flexible Label-Constrained Shortest Path Queries in Road Networks 2025 SIGMOD 4.9793485e-05
11,311 Customization Meets 2-Hop Labeling: Efficient Routing in Road Networks 2025 VLDB 4.9793485e-05
11,449 A CPU-GPU Hybrid Labelling Algorithm for Massive Shortest Distance Queries on Road Networks 2025 VLDB 4.9793485e-05
11,600 Efficient kNN Search in Public Transportation Networks 2024 VLDB 4.9793485e-05
11,716 QHL: A Fast Algorithm for Exact Constrained Shortest Path Search on Road Networks 2023 SIGMOD 4.9793485e-05
11,752 TASK: An Efficient Framework for Instant Error-tolerant Spatial Keyword Queries on Road Networks 2023 VLDB 4.9793485e-05
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Outgoing Citations (Sorted by Pagerank)

Showing 11 of 11 cited papers.

Citations counted here include only citations to other VLDB/SIGMOD/CIDR/PODS papers in this database.

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