An Efficient and Scalable Approach to CNN Queries in a Road Network

Summary: UNICONS accelerates nearest-neighbor and continuous NN queries over road networks by integrating precomputed NN lists into Dijkstra’s algorithm. A mathematical formulation derives CNN results, delivering up to 3.5× and 5× speedups over network-distance methods, especially across varying object densities. (summarized by gpt-5.6-luna on Jul 24 2026)

Paper ID: 9555
Venue: VLDB
Year: 2005
Pagerank: 0.00012578515
Overall Rank: 1,025 | 92.97%
DOI: -

Incoming Non-self Citations Over Time

Authors

1. Hyung-Ju Cho (Korea Advanced Institute of Science and Technology)
2. Chin-Wan Chung (Korea Advanced Institute of Science and Technology)

BibTeX Citation

@article{cho_vldb05,
        title = {{An Efficient and Scalable Approach to CNN Queries in a Road Network}},
        author = {Cho, Hyung-Ju and Chung, Chin-Wan},
        journal = {PVLDB},
        series = {{VLDB} '05},
        volume = {31},
        pages = {865--876},
        year = {2005}
}

Incoming Citations (Sorted by Pagerank)

Showing 16 of 16 citing papers.

Rank	Citing Paper	Year	Venue	Pagerank
433	Scalable Network Distance Browsing in Spatial Databases	2008	SIGMOD	0.00018532516
968	Path Oracles for Spatial Networks	2009	VLDB	0.00012901559
1,620	Continuous Nearest Neighbor Monitoring in Road Networks	2006	VLDB	0.00010206305
2,153	Monitoring Path Nearest Neighbor in Road Networks	2009	SIGMOD	9.0762376e-05
2,629	Distance Indexing on Road Networks	2006	VLDB	8.3265243e-05
4,573	TOAIN: A Throughput Optimizing Adaptive Index for Answering Dynamic kNN Queries on Road Networks	2018	VLDB	6.6226156e-05
4,937	The V*-Diagram: A Query-Dependent Approach to Moving KNN Queries	2008	VLDB	6.4350791e-05
5,851	k-Nearest Neighbors on Road Networks: A Journey in Experimentation and In-Memory Implementation	2016	VLDB	6.0659596e-05
7,140	Continuous Obstructed Nearest Neighbor Queries in Spatial Databases	2009	SIGMOD	5.6928705e-05
7,246	Privacy-Aware Mobile Services over Road Networks	2009	VLDB	5.6637035e-05
8,543	Finding Shortest Path on Land Surface	2011	SIGMOD	5.4119882e-05
8,731	Simpler is More: Efficient Top-K Nearest Neighbors Search on Large Road Networks	2024	VLDB	5.3766157e-05
9,111	Efficient Algorithms for Finding Optimal Meeting Point on Road Networks	2011	VLDB	5.3221578e-05
9,143	Processing Proximity Relations in Road Networks	2010	SIGMOD	5.3153925e-05
9,358	SkyGraph: Retrieving Regions of Interest using Skyline Subgraph Queries	2017	VLDB	5.2822032e-05
10,460	High-Throughput k Nearest Neighbors Search in Road Networks	2026	SIGMOD	5.093636e-05

Outgoing Citations (Sorted by Pagerank)

Showing 3 of 3 cited papers.

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

Rank	Cited Paper	Year	Venue	Pagerank
4	The R*-tree: An Efficient and Robust Access Method for Points and Rectangles	1990	SIGMOD	0.001157935
449	Query Processing in Spatial Network Databases	2003	VLDB	0.0001826404
665	Voronoi-Based K Nearest Neighbor Search for Spatial Network Databases	2004	VLDB	0.00015167291

Semantically Similar Papers

#	Overall Rank	Paper	Year	Venue
1	2,153	Monitoring Path Nearest Neighbor in Road Networks	2009	SIGMOD
2	2,629	Distance Indexing on Road Networks	2006	VLDB
3	1,281	Continuous Nearest Neighbor Search	2002	VLDB
4	665	Voronoi-Based K Nearest Neighbor Search for Spatial Network Databases	2004	VLDB
5	5,851	k-Nearest Neighbors on Road Networks: A Journey in Experimentation and In-Memory Implementation	2016	VLDB
6	11,272	Efficient kNN Search in Public Transportation Networks	2024	VLDB
7	8,731	Simpler is More: Efficient Top-K Nearest Neighbors Search on Large Road Networks	2024	VLDB
8	1,620	Continuous Nearest Neighbor Monitoring in Road Networks	2006	VLDB
9	10,460	High-Throughput k Nearest Neighbors Search in Road Networks	2026	SIGMOD
10	5,987	Progressive Top-K Nearest Neighbors Search in Large Road Networks	2020	SIGMOD