mixparam.rd

这个包里面含有利用极大似然估计方法来拟合成组数据和条件数据的有限混合分布模型的函数

\name{mixparam} 
\alias{mixparam}
\title{Construct Starting Values for Parameters}
\description{
  Construct starting values for parameters of a mixture model.
}
\usage{
mixparam(mu, sigma, pi = NULL)
}
\arguments{
\item{mu}{a vector of means of component distributions, which
 should be in ascending order.}
\item{sigma}{a vector of standard deviations of component
 distributions, which are corresponding to the means. \code{sigmas} 
 must be in ascending order when means are equal.}
\item{pi}{the corresponding mixing proportions of components.
 If \code{NULL}, the proportions will be taken as \code{1/k},
 where k is the number of elements of \code{mu}.}
}
\value{
 A data frame containing three variables, which are,
 in order, the proportions, means, and standard deviations.
}
\seealso{
\code{\link{mixgroup}} for grouping data, \code{\link{mixconstr}} for constructing constraints.
}
\examples{
mixparam(mu = c(20, 30, 40), sigma = c(2, 3, 4))
mixparam(c(20, 30, 40), c(3), c(0.15, 0.78, 0.07))
}
\keyword{misc}
\keyword{utilities}