You are here: Wiki>AI_GEOSTATS Web>AI_GEOSTATSPapers>Papers20100623113855 (13 Aug 2010, theresiafreska)Edit Attach
Title: Assessing Accuracy of Land-Cover Change Data Aggregated to a Fixed Spatial Support

Date: 8 September 2003

Authors: Stephen V. Stehman, James D. Wickham



A method for assessing the accuracy of land-cover change products is described that evaluates net change at a specified spatial support. Accuracy is quantified by the mean absolute deviation, a metric derived from the absolute value of the difference between the map change in a land-cover class and the true change in the land-cover class. Several sampling design options are described for collecting the reference data. Stratification is a key design feature because of the desire to increase sample size in the rare high change areas of the map. A protocol for a priori evaluation of different sampling designs is described. Details of the accuracy assessment protocol are illustrated via a change product derived from the 1992 and preliminary 2001 National Land-Cover Data (NLCD).

Reference: Proceedings of the 7th International Conference on GeoComputation, University of Southampton, United Kingdom, 8 - 10 September 2003.
CD-ROM. Produced by D.Martin, "GeoComputation CD-ROM".
Topic revision: r3 - 13 Aug 2010 21:02:36, theresiafreska
This site is powered by FoswikiCopyright &© by the contributing authors. All material on this collaboration platform is the property of the contributing authors.
Ideas, requests, problems regarding Wiki? Send feedback