Geography

Using the relative operating characteristics to quantify certainty in prediction of location of land cover change in India

Document Type

Article

Abstract

This paper describes a methodology by which modelers, ecologists and planners can quantify the certainty in predicting the location of change for a given quantity of change. The specification of the quantity of a land cover category and the specification of the location of a land cover category are two distinct fundamental concepts in geographical analysis. It is crucial that scientists have appropriate quantitative tools to analyze each of these two concepts independently of one another. This paper gives methods whereby a scientist can convert a map of relative propensity for disturbance to a map of probability of future disturbance, based on a quantifiable validation of a map's predictive ability. The required inputs are: (1) maps that show a Boolean categorical variable at times 0, 1 and 2, (2) a technique to create a map that shows the relative propensity for membership in the Boolean category, and (3) a predicted proportion of the category at time 3.

Publication Title

Transactions in GIS

Publication Date

1-1-2003

Volume

7

Issue

4

First Page

467

Last Page

484

ISSN

1361-1682

DOI

10.1111/1467-9671.00159

Keywords

geographic information systems, GIS, forecasting, geography, Earth sciences, India

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