Mercurial > hg > camir-aes2014
annotate toolboxes/FullBNT-1.0.7/bnt/inference/@inf_engine/marginal_family.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 m = marginal_family(engine, i, t) |
| wolffd@0 | 2 % MARGINAL_FAMILY Compute the marginal on i's family (inf_engine) |
| wolffd@0 | 3 % m = marginal_family(engine, i, t) |
| wolffd@0 | 4 % |
| wolffd@0 | 5 % t defaults to 1. |
| wolffd@0 | 6 |
| wolffd@0 | 7 if nargin < 3, t = 1; end |
| wolffd@0 | 8 |
| wolffd@0 | 9 bnet = bnet_from_engine(engine); |
| wolffd@0 | 10 if t==1 |
| wolffd@0 | 11 m = marginal_nodes(engine, family(bnet.dag, i)); |
| wolffd@0 | 12 else |
| wolffd@0 | 13 ss = length(bnet.intra); |
| wolffd@0 | 14 fam = family(bnet.dag, i+ss); |
| wolffd@0 | 15 if any(fam<=ss) |
| wolffd@0 | 16 % i has a parent in the preceeding slice |
| wolffd@0 | 17 % Hence the lowest numbered slice containing the family is t-1 |
| wolffd@0 | 18 m = marginal_nodes(engine, fam, t-1); |
| wolffd@0 | 19 else |
| wolffd@0 | 20 % The family all fits inside slice t |
| wolffd@0 | 21 % Hence shift the indexes back to slice 1 |
| wolffd@0 | 22 m = marginal_nodes(engine, fam-ss, t); |
| wolffd@0 | 23 end |
| wolffd@0 | 24 end |