Predict for a new dataset by using a repeat ensemble. Predictions from individual
models are combined according to fun
Usage
# S3 method for class 'repeat_ensemble'
predict(
object,
new_data,
type = "prob",
fun = "mean",
metric_thresh = NULL,
class_thresh = NULL,
members = FALSE,
...
)
Arguments
- object
an repeat_ensemble object
- new_data
a data frame in which to look for variables with which to predict.
- type
the type of prediction, "prob" or "class".
- fun
string defining the aggregating function. It can take values
mean
,median
,weighted_mean
,weighted_median
andnone
. It is possible to combine multiple functions, except for "none". If it is set to "none", only the individual member predictions are returned (this automatically setsmember
to TRUE)- metric_thresh
a vector of length 2 giving a metric and its threshold, which will be used to prune which models in the ensemble will be used for the prediction. The 'metrics' need to have been computed when the workflow was tuned. Examples are c("accuracy",0.8) or c("boyce_cont",0.7)
- class_thresh
probability threshold used to convert probabilities into classes. It can be a number (between 0 and 1), or a character metric (currently "tss_max" or "sensitivity"). For sensitivity, an additional target value is passed along as a second element of a vector, e.g. c("sensitivity",0.8).
- members
boolean defining whether individual predictions for each member should be added to the ensemble prediction. The columns for individual members have the name of the workflow a a prefix, separated by "." from the usual column names of the predictions.
- ...
not used in this method.