/**
* /// Because the growBranches() is called although no data is left after the last speech frame, the ordering of the
* /// active-list might depend on the transition probabilities and (penalty-scores) only. Therefore we need to undo the last
* /// grow-step up to final states or the last emitting state in order to fix the list.
* /// @return newly created list
*/
protected ActiveList UndoLastGrowStep()
{
var fixedList = ActiveList.NewInstance();
foreach (var token in ActiveList)
{
var curToken = token.Predecessor;
// remove the final states that are not the real final ones because they're just hide prior final tokens:
while (curToken.Predecessor != null && (
(curToken.IsFinal && curToken.Predecessor != null && !curToken.Predecessor.IsFinal) ||
(curToken.IsEmitting && curToken.Data == null) || // the so long not scored tokens
(!curToken.IsFinal && !curToken.IsEmitting)))
{
curToken = curToken.Predecessor;
}
fixedList.Add(curToken);
}
return(fixedList);
}
/**
* /// Clears emitting list in manager
*/
public override void ClearEmittingList()
{
ActiveList list = CurrentActiveLists[CurrentActiveLists.Length - 1];
CurrentActiveLists[CurrentActiveLists.Length - 1] = list.NewInstance();
}
