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Road Networks

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Encyclopedia of Database Systems

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Synonyms

Road network databases; Road vector data;Spatial network databases

Definition

In vector space, the distance between two objects can be computed as a function of the components of the vectors representing the objects. A typical distance function for multidimensional vector spaces is the well-known Minkowski metric, with the Euclidean metric as a popular case for two-dimensional space. Therefore, the distance computation in multidimensional vector spaces is fast because its complexity depends on the number of dimensions which is limited to two or three in geospatial applications. However, with road-networks, the distance between two objects is measured by their network distance, i.e., the length of the shortest path through the network edges that connects the two locations. This computationally expensive network-based metric mainly depends on the connectivity of the network. For example, representing a road network as a graph with e weighted edges and vvertices, the complexity...

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Author information

Authors and Affiliations

  1. University of Southern California, Los Angeles, CA, USA

    Cyrus Shahabi

Authors
  1. Cyrus Shahabi
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Corresponding author

Correspondence to Cyrus Shahabi .

Editor information

Editors and Affiliations

  1. Georgia Institute of Technology College of Computing, Atlanta, GA, USA

    Ling Liu

  2. University of Waterloo School of Computer Science, Waterloo, ON, Canada

    M. Tamer Özsu

Section Editor information

  1. Dept. of Computer Science and Eng., Hong Kong Univ. of Science and Technology, Kowloon, Hong Kong, Hong Kong SAR

    Dimitris Papadias

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Shahabi, C. (2018). Road Networks. In: Liu, L., Özsu, M.T. (eds) Encyclopedia of Database Systems. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-8265-9_319

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