|
public probabilityOf ( String Y, bool value, bool>.Dictionary |
||
| Y | String | |
| value | bool | |
| evidence | bool>.Dictionary | |
| Résultat | double | |
private static double enumerateAll(BayesNet net, List<string> unprocessedVariables,
Dictionary<String, bool> evidenceVariables)
{
if (unprocessedVariables.Count == 0)
{
return 1.0;
}
else
{
String Y = (String)unprocessedVariables[0];
if (evidenceVariables.ContainsKey(Y))
{
double probYGivenParents = net.probabilityOf(Y,
evidenceVariables[Y], evidenceVariables);
double secondTerm = enumerateAll(net, Util
.rest(unprocessedVariables), evidenceVariables);
return probYGivenParents * secondTerm;
}
else
{
double sigma = 0.0;
Dictionary<String, bool> clone1 = cloneEvidenceVariables(evidenceVariables);
clone1.Add(Y, true);
double probYTrueGivenParents = net.probabilityOf(Y,
true, clone1);
double secondTerm = enumerateAll(net, Util
.rest(unprocessedVariables), clone1);
double trueProbabilityY = probYTrueGivenParents * secondTerm;
Dictionary<String, bool> clone2 = cloneEvidenceVariables(evidenceVariables);
clone2.Add(Y, false);
double probYFalseGivenParents = net.probabilityOf(Y,
false, clone2);
secondTerm = enumerateAll(net, Util.rest(unprocessedVariables),
clone2);
double falseProbabilityY = probYFalseGivenParents * secondTerm;
// System.Console.Write(secondTerm + " ) )");
sigma = trueProbabilityY + falseProbabilityY;
return sigma;
}
}
}
private static double enumerateAll(BayesNet net, List <string> unprocessedVariables,
Dictionary <String, bool> evidenceVariables)
{
if (unprocessedVariables.Count == 0)
{
return(1.0);
}
else
{
String Y = (String)unprocessedVariables[0];
if (evidenceVariables.ContainsKey(Y))
{
double probYGivenParents = net.probabilityOf(Y,
evidenceVariables[Y], evidenceVariables);
double secondTerm = enumerateAll(net, Util
.rest(unprocessedVariables), evidenceVariables);
return(probYGivenParents * secondTerm);
}
else
{
double sigma = 0.0;
Dictionary <String, bool> clone1 = cloneEvidenceVariables(evidenceVariables);
clone1.Add(Y, true);
double probYTrueGivenParents = net.probabilityOf(Y,
true, clone1);
double secondTerm = enumerateAll(net, Util
.rest(unprocessedVariables), clone1);
double trueProbabilityY = probYTrueGivenParents * secondTerm;
Dictionary <String, bool> clone2 = cloneEvidenceVariables(evidenceVariables);
clone2.Add(Y, false);
double probYFalseGivenParents = net.probabilityOf(Y,
false, clone2);
secondTerm = enumerateAll(net, Util.rest(unprocessedVariables),
clone2);
double falseProbabilityY = probYFalseGivenParents * secondTerm;
// System.Console.Write(secondTerm + " ) )");
sigma = trueProbabilityY + falseProbabilityY;
return(sigma);
}
}
}
