dissimilarity.object(cluster)
dissimilarity.object()所属R语言包:cluster
Dissimilarity Matrix Object
相异矩阵对象
译者:生物统计家园网 机器人LoveR
描述----------Description----------
Objects of class "dissimilarity" representing the dissimilarity matrix of a dataset.
类对象"dissimilarity"代表数据集的相异矩阵。
值----------Value----------
The dissimilarity matrix is symmetric, and hence its lower triangle (column wise) is represented as a vector to save storage space. If the object, is called do, and n the number of observations, i.e., n <- attr(do, "Size"), then for i < j <= n, the dissimilarity between (row) i and j is do[n*(i-1) - i*(i-1)/2 + j-i]. The length of the vector is n*(n-1)/2, i.e., of order n^2.
相异矩阵是对称的,因此其下三角(列明智)代表作为向量,以节省存储空间。如果对象,被称为do和n的若干意见,即n <- attr(do, "Size"),i < j <= n,(行)i和j之间的不同是 do[n*(i-1) - i*(i-1)/2 + j-i]。向量的长度是n*(n-1)/2,即为了n^2。
"dissimilarity" objects also inherit from class dist and can use dist methods, in particular, as.matrix, such that d(i,j) from above is just as.matrix(do)[i,j].
"dissimilarity"对象也从类dist“可以使用dist方法,尤其是as.matrix,如继承,d(i,j)从上面as.matrix(do)[i,j] 。
The object has the following attributes:
对象具有以下属性:
参数:Size
the number of observations in the dataset.
在观测数据集。
参数:Metric
the metric used for calculating the dissimilarities. Possible values are "euclidean", "manhattan", "mixed" (if variables of different types were present in the dataset), and "unspecified".
度量用于计算异同。可能的值是“欧氏”,“曼哈顿”,“混合”(如果DataSet中存在不同类型的变量),“未指定”。
参数:Labels
optionally, contains the labels, if any, of the observations of the dataset.
可选,包含标签数据集的意见,如果有的话。
参数:NA.message
optionally, if a dissimilarity could not be computed, because of too many missing values for some observations of the dataset.
可选,如果相异可能不被计算,因为太多缺失值数据集的一些意见。
参数:Types
when a mixed metric was used, the types for each variable as one-letter codes (as in the book, e.g. p.54):
混合度量时,每一个字母代码(如在这本书中,egp54)的变量的类型:
AAsymmetric binary
AAsymmetric二进制
SSymmetric binary
SSymmetric二进制
NNominal (factor)
NNominal(因子)
OOrdinal (ordered factor)
OOrdinal(有序因子)
IInterval scaled (numeric)
IInterval规模(数字)
TraTio to be log transformed (positive numeric) .
TraTio将日志转换(正数)。
发电----------GENERATION----------
daisy returns this class of objects. Also the functions pam, clara, fanny, agnes, and diana return a dissimilarity object, as one component of their return objects.
daisy返回这个类的对象。功能pam,clara,fanny,agnes,diana回dissimilarity对象作为返回对象的一个组成部分。
方法----------METHODS----------
The "dissimilarity" class has methods for the following generic functions: print, summary.
"dissimilarity"类有以下的通用功能的方法:print,summary。
参见----------See Also----------
daisy, dist, pam, clara, fanny, agnes, diana.
daisy,dist,pam,clara,fanny,agnes,diana。
转载请注明:出自 生物统计家园网(http://www.biostatistic.net)。
注:
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