Minimum Volume Ellipsoid Object
DESCRIPTION:
These are objects of class
mve
They represent the minimum volume ellipsoid of a data set.
GENERATION:
This class of objects is returned from the
cov.mve
function.
METHODS:
The
"mve"
class of objects has methods for the following generic
functions:
plot
,
print
,
summary
.
STRUCTURE:
The following components must be included in a legitimate
mve
object.
VALUE:
- cov
-
the estimated covariance matrix.
- center
-
an estimate for the location of the data.
- n.obs
-
the number of data observations.
- cor
-
the estimated correlation matrix for the data.
This is only returned if the input
cor
is
TRUE
.
- method
-
a character string that contains the number of samples taken and the number
that were singular.
- objective
-
vector of the objective for each component of the output
stock
.
These are in increasing order.
- stock
-
list of length
nkeep
containing vectors of observation numbers.
This is only returned for multivariate data sets.
- births.n
-
the number of genetic births that were performed.
This is only returned for multivariate data sets.
- mve.wt
-
weights based on the estimated covariance matrix and the estimated
location of the data.
- X
-
same as the input data of
cov.mve.default
or the data matrix.
X is invisible for printing methods.
- model
-
optionally the model frame, if
model=TRUE
(in
cov.mve.formula
).
- x
-
optionally the model matrix, if
x=TRUE
(in
cov.mve.formula
).
SEE ALSO:
,
.