Comparing randsample and binning uniform random

1 view (last 30 days)
I can produce randomly polled (with replacement) values from vector x with probabilities in vector p using randsample with replacement.
X = randsample(N,K,true,W)
I can equivalently do this by using rand and histcounts (specifying edges) that correspond to the values from a cumulative sum on vector p (assuming p is normalized).
edges = [0 cumsum(p)]; edges(end)=1; % for possible rounding error
Y = rand(1,nsamples);
[~,~,bin] = histcounts(Y, edges);
X = x(bin);
My question is: if one of these is better, which one is?

Answers (0)

Categories

Find more on MATLAB in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!