\name{Fs}
\alias{Fs}
\title{Feature Selection root class}
\description{This is a virtual class that just provide a
  \code{run(mlDat=NULL,prevFsOutput=NULL)} that can be overloaded. This
  function may be usefull to avoid to recompute intermediary results.
  If the user choose to not overload \code{run}, this method wil compute
  an "key" that identify the output of the current \code{Fs}. This "key"
  is then used to check if the result \code{FsOutput} has been alredy
  computed. If not it call the \code{func} function, store and return the
  \code{FsOutput}.
}

\usage{
##Constructor
Fs(func=NULL,args=list())

##Accessors
char     getName()

##Methods
       learn(mlData,...) ##abstract methods
MlData fSelect()         ##abstract methods
}

\arguments{
\item{func}{The function to call in the \code{run} function}
\item{args}{The argument passed to the function}

\item{mlData.in}{A \code{MlData} object on which feature selection is
    performed}
}
\value{
} 
\seealso{
  \link{\code{FsFilterTest}}
}
\examples{
}