\name{PPIEX}
\alias{PPIEX}
\docType{data}
\title{Protein-protein co-membership graph matrix}
\description{
  From the matrix of ISI, we can derive the PPCM matrix by the
  multiplication: ISI %*% t(ISI), where 1+1=1. 
}
\usage{data(PPIEX)}
\format{
  The format is:
 num [1:35, 1:35] 1 0 0 0 0 0 0 0 0 0 ...
 - attr(*, "dimnames")=List of 2
  ..$ : chr [1:35] "YAL015C" "YAL017W" "YAL021C" "YAL036C" ...
  ..$ : chr [1:35] "YAL015C" "YAL017W" "YAL021C" "YAL036C" ...
}
\details{
  This is an example PPCM where both the rows and the columns are
  indexed by the proteins present in the organism or cell. Here an entry
  of 1 means that two proteins share co-membership in some complex.
}
\source{

}
\references{

}
\examples{
data(PPIEX)

}
\keyword{datasets}