diff options
Diffstat (limited to 'sourcecodes/bnt-master/BNT/CPDs/@discrete_CPD/Old/prob_CPD.m')
| -rw-r--r-- | sourcecodes/bnt-master/BNT/CPDs/@discrete_CPD/Old/prob_CPD.m | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/sourcecodes/bnt-master/BNT/CPDs/@discrete_CPD/Old/prob_CPD.m b/sourcecodes/bnt-master/BNT/CPDs/@discrete_CPD/Old/prob_CPD.m new file mode 100644 index 00000000..c0a79bda --- /dev/null +++ b/sourcecodes/bnt-master/BNT/CPDs/@discrete_CPD/Old/prob_CPD.m @@ -0,0 +1,25 @@ +function p = prob_CPD(CPD, domain, ns, cnodes, evidence) +% PROB_CPD Compute prob of a node given evidence on the parents (discrete) +% p = prob_CPD(CPD, domain, ns, cnodes, evidence) +% +% domain is the domain of CPD. +% node_sizes(i) is the size of node i. +% cnodes = all the cts nodes +% evidence{i} is the evidence on the i'th node. + +ps = domain(1:end-1); +self = domain(end); +CPT = CPD_to_CPT(CPD); + +if isempty(ps) + T = CPT; +else + assert(~any(isemptycell(evidence(ps)))); + pvals = cat(1, evidence{ps}); + i = subv2ind(ns(ps), pvals(:)'); + T = reshape(CPT, [prod(ns(ps)) ns(self)]); + T = T(i,:); +end +p = T(evidence{self}); + + |
