pick.m

来自「马尔可夫过程是一类重要的随机过程,它的原始模型马尔可夫链,由俄国数学家Α.Α.马」· M 代码 · 共 10 行

function [i,j] = pick(ndx)
% PICK Pick an entry at random from a vector
% function [i,j] = pick(ndx)
%
% i = ndx(j) for j ~ U(1:length(ndx))

dist = normalize(ones(1,length(ndx)));
j = sample_discrete(dist);
i = ndx(j);