Hello,
I have a bootstrap implementation loop that I would like to replace by a faster
"batch operator".
The loop is as follows:
for (b in 1:B) {
indices <- sample(1:N, size=N, replace=TRUE) # sample n elements with
replacement
theta_star[b,] = statistic(data,indices) # execute statistic callback
function
}
I would like to replace this by something like (does not work):
indices <- replicate(B,sample(1:N, size=N, replace=TRUE))
theta_star <- apply(indices,2,statistic,data)
This, however, does not work because the statistic function receives indices as
second parameter and not as first parameter. While I could change the signature
of my statistic function I would like to know how to achieve this without
having to do so.
TIA,
Best regards,
Giovanni
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