% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/mergeSmallFactorLevels.R
\name{mergeSmallFactorLevels}
\alias{mergeSmallFactorLevels}
\title{Merges small levels of factors into new level.}
\usage{
mergeSmallFactorLevels(task, cols = NULL, min.perc = 0.01,
  new.level = ".merged")
}
\arguments{
\item{task}{[\code{\link{Task}}]\cr
The task.}

\item{cols}{[\code{character}]
Which columns to convert.
Default is all factor and character columns.}

\item{min.perc}{[\code{numeric(1)}]\cr
The smallest levels of a factor are merged until their combined proportion
w.r.t. the length of the factor exceeds \code{min.perc}.
Must be between 0 and 1.
Default is 0.01.}

\item{new.level}{[\code{character(1)}]\cr
New name of merged level.
Default is \dQuote{.merged}}
}
\value{
\code{Task}, where merged levels are combined into a new level of name \code{new.level}.
}
\description{
Merges factor levels that occur only infrequently into combined levels with a higher frequency.
}
\seealso{
Other eda_and_preprocess: \code{\link{capLargeValues}},
  \code{\link{createDummyFeatures}},
  \code{\link{dropFeatures}},
  \code{\link{normalizeFeatures}},
  \code{\link{removeConstantFeatures}},
  \code{\link{summarizeColumns}}
}
