corFactor.corStruct(nlme)
corFactor.corStruct()所属R语言包:nlme
Factor of a corStruct Object Matrix
1 corStruct对象矩阵的因素
译者:生物统计家园网 机器人LoveR
描述----------Description----------
This method function extracts a transpose inverse square-root factor, or a series of transpose inverse square-root factors, of the correlation matrix, or list of correlation matrices, represented by object. Letting S denote a correlation matrix, a square-root factor of S is any square matrix L such that S = L'L. This method extracts L^(-t).
此方法的功能提取转置逆平方根因素,或一系列转逆平方根因素,相关矩阵或相关矩阵的名单,由object代表。让S表示相关矩阵,平方根因素S是任何方阵LS = L'L。这种方法提取L^(-t)。
用法----------Usage----------
## S3 method for class 'corStruct'
corFactor(object, ...)
参数----------Arguments----------
参数:object
an object inheriting from class corStruct representing a correlation structure, which must have been initialized (using Initialize).
从类继承的对象corStruct代表相关的结构,它必须被初始化(使用Initialize)。
参数:...
some methods for this generic require additional arguments. None are used in this method.
这个通用的一些方法需要额外的参数。没有使用这种方法。
值----------Value----------
If the correlation structure does not include a grouping factor, the returned value will be a vector with a transpose inverse square-root factor of the correlation matrix associated with object stacked column-wise. If the correlation structure includes a grouping factor, the returned value will be a vector with transpose inverse square-root factors of the correlation matrices for each group, stacked by group and stacked column-wise within each group.
如果相关结构不包括分组因素,则返回值将是一个向量与转逆平方根object叠列明智的相关矩阵的因素。如果相关结构包括分组因素,则返回值将是一个转逆平方根因素相关矩阵组,每个组和堆放,堆放在每个组列明智的向量。
注意----------Note----------
This method function is used intensively in optimization algorithms and its value is returned as a vector for efficiency reasons. The corMatrix method function can be used to obtain transpose inverse square-root factors in matrix form.
这种方法的功能是用来集中在优化算法,并返回其值作为向量效率的原因。 corMatrix方法的功能,可以用来获得转逆平方根矩阵形式的因素。
作者(S)----------Author(s)----------
Jose Pinheiro and
Douglas Bates <a href="mailto:bates@stat.wisc.edu">bates@stat.wisc.edu</a>
参见----------See Also----------
corFactor, corMatrix.corStruct, recalc.corStruct, Initialize.corStruct
corFactor,corMatrix.corStruct,recalc.corStruct,Initialize.corStruct
举例----------Examples----------
cs1 <- corAR1(form = ~1 | Subject)
cs1 <- Initialize(cs1, data = Orthodont)
corFactor(cs1)
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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