bn.kcv
.bn.kcv
is a list whose elements correspond to the
iterations of a k-fold cross-validation. Each element contains the following
objects:
test
: an integer vector, the indexes of the observations
used as a test set.fitted
: an object of classbn.fit
, the Bayesian network
fitted from the training set.loss
: the value of the loss function.If the loss function rquires to predict values from the test sets, each element also contains:
predicted
: a factor or a numeric vector, the predicted values
for the target node in the test set.observed
: a factor or a numeric vector, the observed values
for the target node in the test set. In addition, an object of class bn.kcv
has the following attributes:
loss
: a character string, the label of the loss function.mean
: the mean of the values of the loss function computed in
thek
iterations of the cross-validation.bn
: either a character string (the label of the learning
algorithm to be applied to the training data in each iteration) or an
object of classbn
(a fixed network structure).