/**
* /// Keeps track of and reports all of the active word histories for the given active list
*
* /// @param activeList the active list to track
*/
private void monitorWords(ActiveList activeList)
{
// WordTracker tracker1 = new WordTracker(currentFrameNumber);
//
// for (Token t : activeList) {
// tracker1.add(t);
// }
// tracker1.dump();
//
// TokenTracker tracker2 = new TokenTracker();
//
// for (Token t : activeList) {
// tracker2.add(t);
// }
// tracker2.dumpSummary();
// tracker2.dumpDetails();
//
// TokenTypeTracker tracker3 = new TokenTypeTracker();
//
// for (Token t : activeList) {
// tracker3.add(t);
// }
// tracker3.dump();
// StateHistoryTracker tracker4 = new StateHistoryTracker(currentFrameNumber);
// for (Token t : activeList) {
// tracker4.add(t);
// }
// tracker4.dump();
}
/** Gets the initial grammar node from the linguist and creates a GrammarNodeToken */
protected void localStart()
{
ISearchGraph searchGraph = linguist.getSearchGraph();
currentFrameNumber = 0;
curTokensScored.value = 0;
numStateOrder = searchGraph.getNumStateOrder();
activeListManager.setNumStateOrder(numStateOrder);
if (buildWordLattice)
{
loserManager = new AlternateHypothesisManager(maxLatticeEdges);
}
ISearchState state = searchGraph.getInitialState();
activeList = activeListManager.getEmittingList();
activeList.add(new Token(state, currentFrameNumber));
clearCollectors();
growBranches();
growNonEmittingBranches();
// tokenTracker.setEnabled(false);
// tokenTracker.startUtterance();
}
/**
* /// Goes through the active list of tokens and expands each token, finding the set of successor tokens until all the
* /// successor tokens are emitting tokens.
*/
protected void growBranches()
{
int mapSize = activeList.size() * 10;
if (mapSize == 0)
{
mapSize = 1;
}
growTimer.start();
bestTokenMap = new Dictionary <ISearchState, Token>(mapSize);
ActiveList oldActiveList = activeList;
resultList = new List <Token>();
activeList = activeListFactory.newInstance();
threshold = oldActiveList.getBeamThreshold();
wordThreshold = oldActiveList.getBestScore() + logRelativeWordBeamWidth;
foreach (Token token in oldActiveList.getTokens())
{
collectSuccessorTokens(token);
}
growTimer.stop();
#if Debug
int hmms = activeList.size();
totalHmms += hmms;
Trace.WriteLine("Frame: " + currentFrameNumber + " Hmms: "
+ hmms + " total " + totalHmms);
#endif
}
/**
* /// Performs the recognition for the given number of frames.
*
* /// @param nFrames the number of frames to recognize
* /// @return the current result or null if there is no Result (due to the lack of frames to recognize)
*/
override public Result recognize(int nFrames)
{
bool done = false;
Result result = null;
streamEnd = false;
for (int i = 0; i < nFrames && !done; i++)
{
done = recognize();
}
// generate a new temporary result if the current token is based on a final search state
// remark: the first check for not null is necessary in cases that the search space does not contain scoreable tokens.
if (activeList.getBestToken() != null)
{
// to make the current result as correct as possible we undo the last search graph expansion here
ActiveList fixedList = undoLastGrowStep();
// Now create the result using the fixed active-list.
if (!streamEnd)
{
result = new Results.Result(fixedList, resultList, currentFrameNumber, done);
}
}
if (_showTokenCount)
{
showTokenCount();
}
return(result);
}
/** Removes unpromising branches from the active list */
protected void pruneBranches()
{
int startSize = activeList.size();
pruneTimer.start();
activeList = pruner.prune(activeList);
beamPruned.value += startSize - activeList.size();
pruneTimer.stop();
}
/**
* /// Keeps track of and reports statistics about the number of active states
*
* /// @param activeList the active list of states
*/
private void monitorStates(ActiveList activeList)
{
tokenSum += activeList.size();
tokenCount++;
if ((tokenCount % 1000) == 0)
{
Trace.WriteLine("Average Tokens/State: " + (tokenSum / tokenCount));
}
}
/**
* /// Adds the given token to the list
*
* /// @param token the token to add
*/
override public void add(Token token)
{
ActiveList activeList = findListFor(token);
if (activeList == null)
{
throw new Exception("Cannot find ActiveList for "
+ token.getSearchState().GetType().Name);
}
activeList.add(token);
}
/// <summary>
/// Gets the initial grammar node from the linguist and creates a GrammarNodeToken.
/// </summary>
protected void localStart()
{
currentFrameNumber = 0;
curTokensScored.value = 0;
ActiveList newActiveList = activeListFactory.newInstance();
ISearchState state = linguist.getSearchGraph().getInitialState();
newActiveList.add(new Token(state, currentFrameNumber));
activeList = newActiveList;
growBranches();
}
/** Grow the non-emitting branches, until the tokens reach an emitting state. */
private void growNonEmittingBranches()
{
for (IEnumerator <ActiveList> i = activeListManager.getNonEmittingListIterator(); i.MoveNext();)
{
activeList = i.Current;
if (activeList != null)
{
// TO DO: look for new implementation
//i.Current.Remove()
pruneBranches();
growBranches();
}
}
}
private Boolean recognize()
{
activeList = activeListManager.getEmittingList();
Boolean more = scoreTokens();
if (more)
{
pruneBranches();
currentFrameNumber++;
if (growSkipInterval == 0 || (currentFrameNumber % growSkipInterval) != 0)
{
clearCollectors();
growEmittingBranches();
growNonEmittingBranches();
}
}
return(!more);
}
/**
* /// Sets the ActiveList.
*
* /// @param activeList the new ActiveList
*/
public void setActiveList(ActiveList activeList)
{
this.activeList = activeList;
}
/** Removes unpromising branches from the active list */
protected void pruneBranches()
{
pruneTimer.start();
activeList = pruner.prune(activeList);
pruneTimer.stop();
}
/**
* /// Dumps out debugging info for the given active list
*
* /// @param al the active list to dump
*/
private void dumpList(ActiveList al)
{
Trace.WriteLine("Size: " + al.size() + " Best token: " + al.getBestToken());
}
/**
* /// Clears emitting list in manager
*/
override public void clearEmittingList()
{
ActiveList list = currentActiveLists[currentActiveLists.Length - 1];
currentActiveLists[currentActiveLists.Length - 1] = list.newInstance();
}
/**
* /// Replaces an old token with a new token
*
* /// @param oldToken the token to replace (or null in which case, replace works like add).
* /// @param newToken the new token to be placed in the list.
*/
//override public void replace(Token oldToken, Token newToken)
//{
// ActiveList activeList = findListFor(oldToken);
// Trace.Assert(activeList != null);
// activeList.replace(oldToken, newToken);
//}
/**
* /// Returns the emitting ActiveList from the manager
*
* /// @return the emitting ActiveList
*/
override public ActiveList getEmittingList()
{
ActiveList list = currentActiveLists[currentActiveLists.Length - 1];
return(list);
}