Usage
evtree.control(minbucket = 7L, minsplit = 20L, maxdepth = 9L, niterations = 10000L, ntrees = 100L, alpha = 1, operatorprob = list(pmutatemajor = 0.2, pmutateminor = 0.2, pcrossover = 0.2, psplit = 0.2, pprune = 0.2), seed = NULL, ...)
Arguments
minbucket
the minimum sum of weights in a terminal node.
minsplit
the minimum sum of weights in a node in order to
be considered for splitting.
maxdepth
maximum depth of the tree. Note, that the memory
requirements increase by the square of the m'aximum tree depth.
niterations
in case the run does not converge, it terminates
after a specified number of iterations defined by niterations.
ntrees
the number of trees in the population.
alpha
regulates the complexity part of the cost function.
Increasing values of alpha encourage decreasing tree sizes.
operatorprob
list or vector of probabilities for the selection
of variation operators. May also be specified partially in which case
the default values are still used for the unspecified arguments.
Always scaled to sum to 100 percent.
seed
an numeric seed to initialize the random number generator
(for reproducibility). By default the seed is randomly drawn using
runif in order to inherit the state of
.Random.seed. If set to seed = -1L,
the random number generator is initialized by the system time.