Mercurial > hg > camir-aes2014
annotate toolboxes/FullBNT-1.0.7/graph/mk_rnd_dag_given_edge_prob.m @ 0:e9a9cd732c1e tip
first hg version after svn
| author | wolffd |
|---|---|
| date | Tue, 10 Feb 2015 15:05:51 +0000 |
| parents | |
| children |
| rev | line source |
|---|---|
| wolffd@0 | 1 function dag = sample_dag(P) |
| wolffd@0 | 2 % SAMPLE_DAG Create a random directed acyclic graph with edge probabilities P(i,j) |
| wolffd@0 | 3 % dag = sample_dag(P) |
| wolffd@0 | 4 % |
| wolffd@0 | 5 % This uses rejection sampling to reject graphs with directed cycles. |
| wolffd@0 | 6 |
| wolffd@0 | 7 done = 0; |
| wolffd@0 | 8 directed = 1; |
| wolffd@0 | 9 iter = 1; |
| wolffd@0 | 10 while ~done |
| wolffd@0 | 11 dag = binornd(1, P); % each edge is an indep Bernoulli (0/1) random variable |
| wolffd@0 | 12 dag = setdiag(dag, 0); |
| wolffd@0 | 13 done = acyclic(dag, directed); |
| wolffd@0 | 14 iter = iter + 1 |
| wolffd@0 | 15 end |