Managing spatial uncertainty using attribute,geometric, and neighborhood measures in an empirical rule-based model approach |
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| Authors: | Rod Allan Kim Lowell |
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| Institution: | (1) RMIT University, Department of Geospatial Science, GPO Box 2476V, Melbourne 3001, Australia, AU;(2) Université Laval, Centre de recherche en géomatique, Pav. Casault, Québec, PQ G1K 7P4, Canada (e-mail: Kim.Lowell@scg.ulaval.ca), CA;(3) Correspondence author, |
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| Abstract: | A rule-based model for managing uncertainty in spatial databases is presented. The overall goal of the model is to allow
a user to assign to a single map class each polygon whose class is not entirely certain using more information than only the
map class attributes of such polygons (that are herein termed abjects). This situation might arise when multiple map realizations of an area are available and interpreters/cartographers are not
in agreement as to what class is present at a given location or when a digital image is classified by algorithmic/probabilistic
means. The scale-based model developed relies on attribute, geometric, and neighborhood measures of abjects arranged in a hierarchical rule-based structure. Structural knowledge of these measures leads to the procedural knowledge
that determines what action – e.g., merge, reclassify, retain – is to be taken for a given abject. The wider applicability of the model and associated methodology is also discussed.
Received: 5 July 2001 / Accepted: 11 April 2002 |
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| Keywords: | : Rule-based model spatial uncertainty image classification multiple realisations |
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