Allometric extension
Allometric extension
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DOI：
10.1111/j.0006-341x.1999.01210.x
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发表时间：
1999-12-01
期刊：
影响因子：
1.9
通讯作者：
Nel, DG
中科院分区：
文献类型：
--
作者：
Bartoletti, S;Flury, BD;Nel, DG
异速生长的常数通常由原木测量的协方差矩阵的第一特征向量来估计。Hills(1982，《统计科学百科全书》，48-54)定义了两个相关物种的异速生长扩展模型，条件是(A)两个物种的异速生长常数相同，(B)平均差异向量与两个协方差矩阵的公共第一特征向量成正比。我们给出了异速生长延伸的检验，并讨论了异速生长延伸模型的参数估计，包括标准误差。
Constants of allometric growth are commonly estimated by the first eigenvector of the covariance matrix of log measurements. Hills (1982, in Encyclopedia of Statistical Sciences, 48-54) defines a model of allometric extension for two related species by the conditions that (a) the constants of allometric growth are identical for both species and (b) the vector of mean differences is proportional to the common first eigenvector of both covariance matrices. We give a test for allometric extension and discuss estimation of the parameters of the allometric extension model, including standard errors.