pick.m

来自「详细介绍了隐马尔科夫链的原理和matlab代码实现」· 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);