2006
DOI: 10.1590/s0103-90162006000500007
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Fitting a taper function to minimize the sum of absolute deviations

Abstract: Multiple product inventories of forests require accurate estimates of the diameter, length and volume of each product. Taper functions have been used to precisely describe tree form, once they provide estimates for the diameter at any height or the height at any diameter. This study applied a goal programming technique to estimate the parameters of two taper functions to describe individual tree forms. The goal programming formulation generates parameters that minimize total absolute deviations (MOTAD). These … Show more

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Cited by 6 publications
(1 citation statement)
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“…Knowing the bole profile of some commercial forestry species, such as the eucalyptus, consists in an important tool for the forest production management. Among the ways of understanding the bole profile, the tapering functions are highlighted, once they express the decreasing of the diameter rate along the bole and allow predicting three basic characteristics of the tree: diameter at any height of the tree, total height or where it stands in a limit diameter and volume between any points of the bole (Prodan et al,1997;Silva et al, 2006;Horle et al, 2010;Leite et al, 2011;Campos and Leite, 2013;Môra et al, 2014;Miguel et al, 2015;Özçelik and Crecente-Campo, 2016), in function of the bole's length and minimal diameter (Chichorro et al, 2003).…”
Section: Introductionmentioning
confidence: 99%
“…Knowing the bole profile of some commercial forestry species, such as the eucalyptus, consists in an important tool for the forest production management. Among the ways of understanding the bole profile, the tapering functions are highlighted, once they express the decreasing of the diameter rate along the bole and allow predicting three basic characteristics of the tree: diameter at any height of the tree, total height or where it stands in a limit diameter and volume between any points of the bole (Prodan et al,1997;Silva et al, 2006;Horle et al, 2010;Leite et al, 2011;Campos and Leite, 2013;Môra et al, 2014;Miguel et al, 2015;Özçelik and Crecente-Campo, 2016), in function of the bole's length and minimal diameter (Chichorro et al, 2003).…”
Section: Introductionmentioning
confidence: 99%