When Hierarchy Meets 2-Hop-Labeling: Efficient Shortest Distance Queries on Road Networks
Summary: H2H-Index: a hierarchical 2-hop labeling that preserves a global vertex hierarchy. Efficient distance queries by visiting a subset of labels; distance-preserved-graph construction with partial-label propagation; experiments on large road networks show an order-of-magnitude speedup. (summarized by gpt-5-nano on Feb 09 2026)
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Authors
- 1. Dian Ouyang (University of Technology Sydney)
- 2. Lu Qin (University of Technology Sydney)
- 3. Lijun Chang (University of Sydney)
- 4. Xuemin Lin (University of New South Wales)
- 5. Ying Zhang (University of Technology Sydney)
- 6. Qing Zhu (Renmin University of China)
BibTeX Citation
@inproceedings{ouyang_sigmod18,
title = {{When Hierarchy Meets 2-Hop-Labeling: Efficient Shortest Distance Queries on Road Networks}},
author = {Ouyang, Dian and Qin, Lu and Chang, Lijun and Lin, Xuemin and Zhang, Ying and Zhu, Qing},
series = {{SIGMOD} '18},
booktitle = {Proceedings of the {ACM} {SIGMOD} International Conference on Management of Data},
publisher = {Association for Computing Machinery},
doi = {10.1145/3183713.3196913},
url = {https://dl.acm.org/doi/10.1145/3183713.3196913},
year = {2018}
}
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