private ResponseBase getResponse(ParsedUtterance utterance)
{
var responses = new List <ModifiableResponse>();
var originalUtterance = utterance.OriginalSentence;
_context.StartTurn(originalUtterance);
var edgeInput = new EdgeInput(originalUtterance);
do
{
_context.EdgeReset();
var scores = edgeInput.GetScore(_currentState);
Trigger trigger;
if (scores.Any())
{
var bestHypothesis = scores.First();
var score = bestHypothesis.Score;
var nonPatternQuestion = getBestNonPattern(scores);
if (score < 0.5)
{
trigger = _currentState.DefaultTrigger;
}
else if (nonPatternQuestion != null && nonPatternQuestion.Score < 0.9 && _currentState == QuestionRouting)
{
_context.SetValue(EquivalenceQuestion.QueriedQuestion, originalUtterance);
var substitution = substitute(nonPatternQuestion.ParsedSentence, utterance);
_context.SetValue(EquivalenceQuestion.PatternQuestion, substitution);
edgeInput = new EdgeInput(EquivalenceQuestion.EquivalenceEdge);
continue;
}
else if (score < 0.9)
{
trigger = _currentState.DefaultTrigger;
}
else
{
var substitution = bestHypothesis.Substitution;
trigger = bestHypothesis.Value;
_context.AddSubstitution(substitution);
}
}
else
{
trigger = _currentState.DefaultTrigger;
}
if (trigger == null)
{
throw new NullReferenceException("Cannot handle null trigger");
}
var response = fireTrigger(trigger);
if (response != null)
{
responses.Add(response);
}
edgeInput = _context.CurrentOutput;
} while (edgeInput != null);
var concatenation = from response in responses select response.CreateResponse().ToString();
return(new SimpleResponse(string.Join(".", concatenation)));
}
