/// <summary>
/// Gets evidence for given question.
/// </summary>
/// <param name="question">The question.</param>
/// <returns>The evidence.</returns>
private QuestionEvidence getQuestionEvidence(FeatureCover question)
{
QuestionEvidence evidence;
if (!_questions.TryGetValue(question.OriginalUtterance, out evidence))
{
_questions[question.OriginalUtterance] = evidence = new QuestionEvidence(question);
}
return(evidence);
}
private IEnumerable <NodeReference> evaluate(StructuredInterpretation interpretation, QuestionEvidence question)
{
HashSet <NodeReference> inputSet = null;
for (var i = 0; i < _generalFeatureNodes.Length; ++i)
{
var generalNode = _generalFeatureNodes[i];
var featureNode = question.GetFeatureNode(generalNode, Graph);
var constraint = interpretation.GetGeneralConstraint(i);
if (inputSet == null)
{
inputSet = constraint.FindSet(featureNode, Graph);
}
else
{
inputSet.IntersectWith(constraint.FindSet(featureNode, Graph));
}
}
var pool = new ContextPool(Graph);
pool.Insert(inputSet.ToArray());
foreach (var distinguishConstraint in interpretation.DisambiguationConstraints)
{
distinguishConstraint.Execute(pool);
}
return(pool.ActiveNodes);
}