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    Inverse distance weighted method for point interpolation on a network

    Shiode, Shino (2005) Inverse distance weighted method for point interpolation on a network. Theory and Applications of GIS 13 (1), pp. 33-41. ISSN 1340-5381.

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    This paper proposes Inverse Distance Weighted (IDW) interpolation on a network for analyzing the phenomena that occur on a network. This method interpolates an unknown attribute value at an arbitrary location on a network using observed values at some other points in its vicinity, which are called sample points. The shortest-path distances from the sample points to the unknown point are used in two separate stages. First, they are used for selecting the fixed number of nearest sample points. Second, the method discretely estimates the attribute value at an unknown point as a weighted mean of a function of their negative power. This is followed by the comparison of the difference in the results derived from the network interpolation and the planar interpolation. Cross validation is applied to the same data set of road networks and elevation data on a network.


    Item Type: Article
    Keyword(s) / Subject(s): spatial interpolation, inverse distance weighted interpolation, cross validation, shortest path distance
    School: Birkbeck Faculties and Schools > Faculty of Humanities and Social Sciences > School of Social Sciences
    Depositing User: Sarah Hall
    Date Deposited: 10 Nov 2016 14:58
    Last Modified: 02 Aug 2023 17:27


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