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13h25mn
2006 Oct 16
5
Re : Generate a random bistochastic matrix
Thanks, I tried someting like this, but computation takes times for large matrices
btransf <- function(y,X=length(y)^4) {
N <- length(y)
bm <- matrix(rep(1/N,N^2),N,N)
for(j in 1:X){
coord <- sample(1:N,4,replace=T)
d <- runif(1,0,min(bm[coord[1],coord[2]],bm[coord[3],coord[4]]))