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Diffstat (limited to 'sourcecodes/bnt-master/BNT/examples/static/Models/mk_ideker_bnet.m')
| -rw-r--r-- | sourcecodes/bnt-master/BNT/examples/static/Models/mk_ideker_bnet.m | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/sourcecodes/bnt-master/BNT/examples/static/Models/mk_ideker_bnet.m b/sourcecodes/bnt-master/BNT/examples/static/Models/mk_ideker_bnet.m new file mode 100644 index 00000000..67f95bae --- /dev/null +++ b/sourcecodes/bnt-master/BNT/examples/static/Models/mk_ideker_bnet.m @@ -0,0 +1,52 @@ +function bnet = mk_ideker_bnet(CPD_type, p) +% MK_IDEKER_BNET Make the Bayes net in the PSB'00 paper by Ideker, Thorsson and Karp. +% +% BNET = MK_IDEKER_BNET uses the boolean functions specified in the paper +% "Discovery of regulatory interactions through perturbation: inference and experimental design", +% Pacific Symp. on Biocomputing, 2000. +% +% BNET = MK_IDEKER_BNET('root') uses the above boolean functions, but puts a uniform +% distribution on the root nodes. +% +% BNET = MK_IDEKER_BNET('cpt', p) uses random parameters drawn from a Dirichlet(p,p,...) +% distribution. If p << 1, this is nearly deterministic; if p >> 1, this is nearly uniform. +% +% BNET = MK_IDEKER_BNET('bool') makes each CPT a random boolean function. +% +% BNET = MK_IDEKER_BNET('orig') is the same as MK_IDEKER_BNET. + + +if nargin == 0 + CPD_type = 'orig'; +end + +n = 4; +dag = zeros(n); +dag(1,3)=1; +dag(2,[3 4])=1; +dag(3,4)=1; +ns = 2*ones(1,n); +bnet = mk_bnet(dag, ns); + +switch CPD_type + case 'orig', + bnet.CPD{1} = tabular_CPD(bnet, 1, [0 1]); + bnet.CPD{2} = tabular_CPD(bnet, 2, [0 1]); + bnet.CPD{3} = boolean_CPD(bnet, 3, 'inline', inline('x(1) & x(2)')); + bnet.CPD{4} = boolean_CPD(bnet, 4, 'inline', inline('x(1) & ~x(2)')); + case 'root', + bnet.CPD{1} = tabular_CPD(bnet, 1, [0.5 0.5]); + bnet.CPD{2} = tabular_CPD(bnet, 2, [0.5 0.5]); + bnet.CPD{3} = boolean_CPD(bnet, 3, 'inline', inline('x(1) & x(2)')); + bnet.CPD{4} = boolean_CPD(bnet, 4, 'inline', inline('x(1) & ~x(2)')); + case 'bool', + for i=1:n + bnet.CPD{i} = boolean_CPD(bnet, i, 'rnd'); + end + case 'cpt', + for i=1:n + bnet.CPD{i} = tabular_CPD(bnet, i, p); + end + otherwise, + error(['unknown type ' CPD_type]); +end |
