% Generate samples from the HHMM with the true params.seed = 0;rand('state', seed);randn('state', seed);discrete_obs = 1;bnet = mk_square_hhmm(discrete_obs, 1);Tmax = 30;Q1 = 1; Q2 = 2; Q3 = 3; F3 = 4; F2 = 5; Onode = 6;Qnodes = [Q1 Q2 Q3]; Fnodes = [F2 F3];chars = ['L', 'l', 'U', 'u', 'R', 'r', 'D', 'd'];  for seqi=1:3  evidence = cell2num(sample_dbn(bnet, 'stop_test', 'is_F2_true_D3'));  T = size(evidence, 2)  pretty_print_hhmm_parse(evidence, Qnodes, Fnodes, Onode, chars);end