Description Value Structure See Also
This class of objects is returned by the DStree
function
to represent a fitted decision tree for rightcensored survival data.
frame 
data frame with one row for each node in the tree.
The 
where 
an integer vector of the same length as the number of observations in the
root node, containing the row number of 
call 
an image of the call that produced the object, but with the arguments
all named and with the actual formula included as the formula argument.
To reevaluate the call, say 
terms 
an object of class 
splits 
a numeric matrix describing the splits: only present if there are any.
The row label is the name of
the split variable, and columns are 
csplit 
an integer matrix. (Only present only if at least one of the split
variables is a factor or ordered factor.) There is a row for
each such split, and the number of columns is the largest number of
levels in the factors. Which row is given by the 
method 
character string: the method used to grow the tree. Since 
cptable 
a matrix of information on the optimal prunings based on a complexity parameter. 
variable.importance 
a named numeric vector giving the importance of each variable. (Only
present if there are any splits.) When printed by

numresp 
integer number of responses; the number of levels for a factor response. 
parms, control 
a record of the arguments supplied, which defaults filled in. 
functions 
the 
ordered 
a named logical vector recording for each variable if it was an ordered factor. 
na.action 
(where relevant) information returned by 
names 
a string vector of size two, which denotes the column names of the observed time points and of the 
wt 
a numeric vector of equal length as the number of rows of the dataset, which denotes the optional case weigths, defined in the 
Optional components include the model frame (model
), the matrix
of predictors (x
) and the response variable (y
) used to
construct the DStree
object.
The above components must be included in a legitimate DStree
object.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.