Article ID Journal Published Year Pages File Type
6346090 Remote Sensing of Environment 2015 10 Pages PDF
Abstract
For a study area in Norway, forest inventory and airborne laser scanning data were used with the k-Nearest Neighbors technique to estimate mean aboveground biomass per unit area. Optimization entailed reduction of the dimension of feature space, deletion of influential outliers, and selection of optimal weights for the weighted Euclidean distance metric. These optimization steps increased the proportion of variability explained in the reference set by as much as 20%, reduced confidence interval widths by as much as 35%, and produced standard errors that were as small as 3% of the estimate of the mean.
Related Topics
Physical Sciences and Engineering Earth and Planetary Sciences Computers in Earth Sciences
Authors
, , ,