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: ha57a8b73f9391b44
Venue: VLDB
Year: 2005
Pagerank: 0.00012303367
Overall Rank: 1,048 | 92.96%
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
447	Scalable Network Distance Browsing in Spatial Databases	2008	SIGMOD	0.00018159715
990	Path Oracles for Spatial Networks	2009	VLDB	0.00012648672
1,652	Continuous Nearest Neighbor Monitoring in Road Networks	2006	VLDB	9.9778734e-05
2,194	Monitoring Path Nearest Neighbor in Road Networks	2009	SIGMOD	8.8805644e-05
2,681	Distance Indexing on Road Networks	2006	VLDB	8.142964e-05
4,674	TOAIN: A Throughput Optimizing Adaptive Index for Answering Dynamic kNN Queries on Road Networks	2018	VLDB	6.4750983e-05
5,062	The V*-Diagram: A Query-Dependent Approach to Moving KNN Queries	2008	VLDB	6.2910498e-05
5,966	k-Nearest Neighbors on Road Networks: A Journey in Experimentation and In-Memory Implementation	2016	VLDB	5.9325005e-05
7,289	Continuous Obstructed Nearest Neighbor Queries in Spatial Databases	2009	SIGMOD	5.5652691e-05
7,396	Privacy-Aware Mobile Services over Road Networks	2009	VLDB	5.5366252e-05
8,710	Finding Shortest Path on Land Surface	2011	SIGMOD	5.2905577e-05
8,895	Simpler is More: Efficient Top-K Nearest Neighbors Search on Large Road Networks	2024	VLDB	5.2559789e-05
9,280	Efficient Algorithms for Finding Optimal Meeting Point on Road Networks	2011	VLDB	5.2036709e-05
9,313	Processing Proximity Relations in Road Networks	2010	SIGMOD	5.1961681e-05
9,534	SkyGraph: Retrieving Regions of Interest using Skyline Subgraph Queries	2017	VLDB	5.1636848e-05
10,647	High-Throughput k Nearest Neighbors Search in Road Networks	2026	SIGMOD	4.9793485e-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	0.0011405675
458	Query Processing in Spatial Network Databases	2003	VLDB	0.00017868943
677	Voronoi-Based K Nearest Neighbor Search for Spatial Network Databases	2004	VLDB	0.00014843441

Semantically Similar Papers

#	Overall Rank	Paper	Year	Venue
1	953	Shortest Path and Distance Queries on Road Networks: An Experimental Evaluation	2012	VLDB
2	2,681	Distance Indexing on Road Networks	2006	VLDB
3	1,304	Continuous Nearest Neighbor Search	2002	VLDB
4	677	Voronoi-Based K Nearest Neighbor Search for Spatial Network Databases	2004	VLDB
5	5,966	k-Nearest Neighbors on Road Networks: A Journey in Experimentation and In-Memory Implementation	2016	VLDB
6	11,600	Efficient kNN Search in Public Transportation Networks	2024	VLDB
7	8,895	Simpler is More: Efficient Top-K Nearest Neighbors Search on Large Road Networks	2024	VLDB
8	1,652	Continuous Nearest Neighbor Monitoring in Road Networks	2006	VLDB
9	10,647	High-Throughput k Nearest Neighbors Search in Road Networks	2026	SIGMOD
10	6,107	Progressive Top-K Nearest Neighbors Search in Large Road Networks	2020	SIGMOD