Accessors for model parameters.

Only the setter for xgboost parameters is currently implemented.

xgb.parameters(object) <- value

Arguments

object	Object of class xgb.Booster or xgb.Booster.handle.
value	a list (or an object coercible to a list) with the names of parameters to set and the elements corresponding to parameter values.

Details

Note that the setter would usually work more efficiently for xgb.Booster.handle than for xgb.Booster, since only just a handle would need to be copied.

Examples

data(agaricus.train, package='xgboost')
train <- agaricus.train

bst <- xgboost(data = train$data, label = train$label, max_depth = 2,
               eta = 1, nthread = 2, nrounds = 2, objective = "binary:logistic")
#> [1]	train-error:0.046522 
#> [2]	train-error:0.022263 

xgb.parameters(bst) <- list(eta = 0.1)