private ParsedUtterance substitute(ParsedUtterance pattern, ParsedUtterance utterance)
{
var patternNodes = InputState.QA.GetPatternNodes(pattern);
var utteranceNodes = InputState.QA.GetRelatedNodes(utterance).ToArray();
if (patternNodes.Count != utteranceNodes.Length)
{
//semantic equivalence is missing - we won't allow equivalence question
return(null);
}
//substitute every word in pattern, according to utterance
var substitutions = HeuristicQAModule.GetSubstitutions(utteranceNodes, patternNodes, InputState.QA.Graph);
var substitutedWords = new List <string>();
foreach (var patternWord in pattern.Words)
{
var patternNode = InputState.QA.Graph.GetNode(patternWord);
NodeReference substitutedNode;
if (!substitutions.TryGetValue(patternNode, out substitutedNode))
{
//there is no substitution - by default we take node from pattern
substitutedNode = patternNode;
}
substitutedWords.Add(substitutedNode.Data);
}
return(ParsedUtterance.From(substitutedWords));
}
internal DialogState(HeuristicQAModule qa)
{
_propertyToValue = new Dictionary <object, object>();
_qa.SetValue(_propertyToValue, qa);
}
public StateContext(HeuristicQAModule module)
{
QuestionAnsweringModule = module;
CallStorage = module.Storage;
Graph = module.Graph;
}