ranger_filter | R Documentation |
Fits a random forest model via the ranger
package and ranks variables by
variable importance.
ranger_filter(
y,
x,
nfilter = NULL,
type = c("index", "names", "full"),
num.trees = 1000,
mtry = ncol(x) * 0.2,
...
)
y |
Response vector |
x |
Matrix or dataframe of predictors |
nfilter |
Number of predictors to return. If |
type |
Type of vector returned. Default "index" returns indices, "names" returns predictor names, "full" returns a named vector of variable importance. |
num.trees |
Number of trees to grow. See ranger::ranger. |
mtry |
Number of predictors randomly sampled as candidates at each split. See ranger::ranger. |
... |
Optional arguments passed to ranger::ranger. |
This filter uses the ranger()
function from the ranger
package. Variable
importance is calculated using mean decrease in gini impurity.
Integer vector of indices of filtered parameters (type = "index") or
character vector of names (type = "names") of filtered parameters. If
type
is "full"
a named vector of variable importance is returned.
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