pick.m

来自「阴马尔科夫模型,matlab程序,很好用的,欢迎大家下载啊」· 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);