Sequences of Variables for Tuning

Source: R/misc.R

This function generates a sequence of mtry values for random forests.

var_seq(p, classification = FALSE, len = 3)

Arguments

p

The number of predictors
classification

Is the outcome a factor (classification = TRUE or numeric?)
len

The number of mtry values to generate.

Value

a numeric vector

Details

If the number of predictors is less than 500, a simple sequence of values of length len is generated between 2 and p. For larger numbers of predictors, the sequence is created using log2 steps.

If len = 1, the defaults from the randomForest package are used.

Examples


var_seq(p = 100, len = 10)
#>  [1]   2  12  23  34  45  56  67  78  89 100
var_seq(p = 600, len = 10)
#>  [1]   2   3   7  13  25  47  89 168 318 600