/**
* /// Connects the arc to this sentence hmm, but don't affect the predecessor relation ship
*
* /// @param arc the arc to the next state
*/
private void RawConnect(SentenceHMMStateArc arc)
{
var state = (SentenceHMMState)arc.State;
// attach the state-number because the state-signature is not necessarily unique
arcs.Put(state.GetValueSignature() + state.StateNumber, arc);
}
protected void AttachState(SentenceHMMState prevState, SentenceHMMState nextState, float logLanguageProbability, float logInsertionProbability)
{
var arc = new SentenceHMMStateArc
(nextState, logLanguageProbability, logInsertionProbability);
prevState.Connect(arc);
}
/**
* /// Connects the arc to this sentence hmm. If the node at the end of the arc is already pointing to some other node
* /// as its predecessor, don't change that relationship, since its probably a result of the nodes being reused'
*
* /// @param arc the path to the next state
*/
public void Connect(SentenceHMMStateArc arc)
{
if (successorArray != null)
{
successorArray = null;
}
RawConnect(arc);
}
/**
* /// Gets a SentenceHMMStateArc. The arc is drawn from a pool of arcs.
*
* /// @param nextState the next state
* /// @param logLanguageProbability the log language probability
* /// @param logInsertionProbability the log insertion probability
*/
protected SentenceHMMStateArc GetArc(SentenceHMMState nextState, float logLanguageProbability, float logInsertionProbability)
{
var arc = new SentenceHMMStateArc(nextState,
logLanguageProbability * _languageWeight,
logInsertionProbability);
var pooledArc = ArcPool.cache(arc);
ActualArcs.Value = ArcPool.Misses;
TotalArcs.Value = ArcPool.Hits + ArcPool.Misses;
return(pooledArc == null ? arc : pooledArc);
}
/**
* /// remove the given arc from the set of succors
*
* /// @param arc the arc to remove
*/
void DeleteSuccessor(SentenceHMMStateArc arc)
{
arcs.Remove(arc);
}