This function creates the settings for a simple imputer which imputes missing values with the mean or median
Examples
# create imputer to impute values with missingness less than 10% using the median
# of observed values
createSimpleImputer(method = "median", missingThreshold = 0.10)
#> $method
#> [1] "median"
#>
#> $missingThreshold
#> [1] 0.1
#>
#> attr(,"fun")
#> [1] "simpleImpute"
#> attr(,"class")
#> [1] "featureEngineeringSettings"