search for: bestunit

...sible samples (n combination (p+1)). I have written a syntax with worked well, but the problem is that it does not work when the dimension of X is large (when n is greater than 25). I think the problem is memory size, is there anyway I can maximize the memory. Here is the syntax that I used.   > bestunits <- function(x){ + n <- nrow(x) + p <- ncol(x) + h <- p+1 + nchoosek <- function(n,h){ + factorial(n)/(factorial(h+1)*factorial(n-h-1))} + vec11 <- matrix(nrow=nchoosek(n,h), ncol=p) + vec12 <- matrix(nrow=nchoosek(n,h), ncol=h) + for (i in 1:nchoosek(n,h)){ + flag <- sample...