An Iterative Reweighting Procedure for Volume Equations Based on Diameter
Authors: Smith, W. Rick; Thomas, Charles E.
Source: Southern Journal of Applied Forestry, Volume 16, Number 2, 1 May 1992 , pp. 64-67(4)
Publisher: Society of American Foresters
Abstract:An iterative reweighting scheme for regression with censored data is introduced. The method provides increased precision of parameter estimates for weighted linear or polynomial, diameter at breast height (dbh) based volume equations. This method can also improve equations that predict unreasonable volumes for trees with small dbh's. The technique was applied to highly heteroscedastic inventory data. Improvement in the precision of both softwood and hardwood, merchantable volume and sawtimber volume equations was achieved using this procedure. South. J. Appl. For. 16(2):64-67.
Document Type: Journal Article
Affiliations: Institute of Quantitative Studies, Southern Forest Experiment Station, New Orleans, LA
Publication date: 1992-05-01
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