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GIS
2002
ACM

A road network embedding technique for k-nearest neighbor search in moving object databases

9 years 1 months ago
A road network embedding technique for k-nearest neighbor search in moving object databases
A very important class of queries in GIS applications is the class of K-Nearest Neighbor queries. Most of the current studies on the K-Nearest Neighbor queries utilize spatial index structures and hence are based on the Euclidean distances between the points. In real-world road networks, however, the shortest distance between two points depends on the actual path connecting the points and cannot be computed accurately using one of the Minkowski metrics. Thus, the Euclidean distance may not properly approximate the real distance. In this paper, we apply an embedding technique to transform a road network to a high dimensional space in order to utilize computationally simple Minkowski metrics for distance measurement. Subsequently, we extend our approach to dynamically transform new points into the embedding space. Finally, we propose an efficient technique that can find the actual shortest path between two points in the original road network using only the embedding space. Our empirical...
Cyrus Shahabi, Mohammad R. Kolahdouzan, Mehdi Shar
Added 19 Dec 2010
Updated 19 Dec 2010
Type Journal
Year 2002
Where GIS
Authors Cyrus Shahabi, Mohammad R. Kolahdouzan, Mehdi Sharifzadeh
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