BARTModel | R Documentation |
Flexible nonparametric modeling of covariates for continuous, binary, categorical and time-to-event outcomes.
BARTModel(
K = integer(),
sparse = FALSE,
theta = 0,
omega = 1,
a = 0.5,
b = 1,
rho = numeric(),
augment = FALSE,
xinfo = matrix(NA, 0, 0),
usequants = FALSE,
sigest = NA,
sigdf = 3,
sigquant = 0.9,
lambda = NA,
k = 2,
power = 2,
base = 0.95,
tau.num = numeric(),
offset = numeric(),
ntree = integer(),
numcut = 100,
ndpost = 1000,
nskip = integer(),
keepevery = integer(),
printevery = 1000
)
K |
if provided, then coarsen the times of survival responses per the
quantiles |
sparse |
logical indicating whether to perform variable selection based on a sparse Dirichlet prior rather than simply uniform; see Linero 2016. |
theta , omega |
|
a , b |
sparse parameters for |
rho |
sparse parameter: typically |
augment |
whether data augmentation is to be performed in sparse variable selection. |
xinfo |
optional matrix whose rows are the covariates and columns their cutpoints. |
usequants |
whether covariate cutpoints are defined by uniform quantiles or generated uniformly. |
sigest |
normal error variance prior for numeric response variables. |
sigdf |
degrees of freedom for error variance prior. |
sigquant |
quantile at which a rough estimate of the error standard deviation is placed. |
lambda |
scale of the prior error variance. |
k |
number of standard deviations |
power , base |
power and base parameters for tree prior. |
tau.num |
numerator in the |
offset |
override for the default |
ntree |
number of trees in the sum. |
numcut |
number of possible covariate cutoff values. |
ndpost |
number of posterior draws returned. |
nskip |
number of MCMC iterations to be treated as burn in. |
keepevery |
interval at which to keep posterior draws. |
printevery |
interval at which to print MCMC progress. |
factor
, numeric
, Surv
Default argument values and further model details can be found in the source See Also links below.
MLModel
class object.
gbart
, mbart
,
surv.bart
, fit
, resample
## Requires prior installation of suggested package BART to run
fit(sale_amount ~ ., data = ICHomes, model = BARTModel)
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