#' Term frequency weighting methods
#'
#' @param values A character string of possible values. See `values_weight_scheme`
#' in examples below.
#'
#' @details
#' This parameter is used in `textrecipes::step_tf()`.
#' @examples
#' values_weight_scheme
#' weight_scheme()
#' @export
weight_scheme <- function(values = values_weight_scheme) {
new_qual_param(
type = "character",
values = values,
label = c(weight_scheme = "Term Frequency Weight Method"),
finalize = NULL
)
}
#' @rdname weight_scheme
#' @export
values_weight_scheme <- c(
"raw count",
"binary",
"term frequency",
"log normalization",
"double normalization"
)
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