Class "Qda" - virtual base class for all classic and robust QDA classes
The class Qda
serves as a base class for deriving
all other classes representing the results of classical
and robust Quadratic Discriminant Analisys methods
A virtual Class: No objects may be created from it.
call
:the (matched) function call.
prior
:prior probabilities used, default to group proportions
counts
:number of observations in each class
center
:the group means
cov
:the group covariance matrices
covinv
:the inverse of the group covariance matrices
covdet
:the determinants of the group covariance matrices
method
:a character string giving the estimation method used
X
:the training data set (same as the input parameter x of the constructor function)
grp
:grouping variable: a factor specifying the class for each observation.
control
:object of class "CovControl"
specifying which estimate
and with what estimation options to use for the group means and covariances
(or NULL
for classical discriminant analysis)
signature(object = "Qda")
: calculates prediction using the results in
object
. An optional data frame or matrix in which to look for variables with which
to predict. If omitted, the scores are used. If the original fit used a formula or
a data frame or a matrix with column names, newdata must contain columns with the
same names. Otherwise it must contain the same number of columns,
to be used in the same order.
signature(object = "Qda")
: prints the results
signature(object = "Qda")
: prints summary information
Valentin Todorov valentin.todorov@chello.at
Todorov V & Filzmoser P (2009), An Object Oriented Framework for Robust Multivariate Analysis. Journal of Statistical Software, 32(3), 1–47. URL http://www.jstatsoft.org/v32/i03/.
showClass("Qda")
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