/**
* /// Expands the given hmm state tree
*
* /// @param parent the parent of the tree
* /// @param tree the tree to expand
* /// @return the final state in the tree
*/
private HMMStateState ExpandHMMTree(UnitState parent, HMMStateState tree)
{
HMMStateState retState = tree;
foreach (HmmStateArc arc in tree.HmmState.GetSuccessors())
{
HMMStateState newState;
if (arc.HmmState.IsEmitting)
{
newState = new HMMStateState(parent, arc.HmmState);
}
else
{
newState = new NonEmittingHMMState(parent, arc.HmmState);
}
SentenceHMMState existingState = GetExistingState(newState);
float logProb = arc.LogProbability;
if (existingState != null)
{
AttachState(tree, existingState, LogOne, logProb);
}
else
{
AttachState(tree, newState, LogOne, logProb);
AddStateToCache(newState);
retState = ExpandHMMTree(parent, newState);
}
}
return(retState);
}
/**
* /// Expands the given hmm state tree
*
* /// @param parent the parent of the tree
* /// @param tree the tree to expand
* /// @return the final state in the tree
*/
protected HMMStateState ExpandHMMTree(UnitState parent, HMMStateState tree)
{
var retState = tree;
foreach (var arc in tree.HmmState.GetSuccessors())
{
HMMStateState newState;
if (arc.HmmState.IsEmitting)
{
newState = new HMMStateState(parent, arc.HmmState);
}
else
{
newState = new NonEmittingHMMState(parent, arc.HmmState);
}
var existingState = GetExistingState(newState);
var logProb = arc.LogProbability;
if (existingState != null)
{
AttachState(tree, existingState, _parent.LogOne, logProb);
}
else
{
AttachState(tree, newState, _parent.LogOne, logProb);
AddStateToCache(newState);
retState = ExpandHMMTree(parent, newState);
}
}
return(retState);
}
