private void AdvanceTop(Parse inputParse)
{
mBuildModel.Evaluate(mBuildContextGenerator.GetContext(inputParse.GetChildren(), 0), mBuildProbabilities);
inputParse.AddProbability(System.Math.Log(mBuildProbabilities[mTopStartIndex]));
mCheckModel.Evaluate(mCheckContextGenerator.GetContext(inputParse.GetChildren(), TopNode, 0, 0), mCheckProbabilities);
inputParse.AddProbability(System.Math.Log(mCheckProbabilities[mCompleteIndex]));
inputParse.Type = TopNode;
}
private void AddParseEvents(List <SharpEntropy.TrainingEvent> events, Parse[] chunks)
{
int currentChunk = 0;
while (currentChunk < chunks.Length)
{
Parse chunkParse = chunks[currentChunk];
Parse parentParse = chunkParse.Parent;
if (parentParse != null)
{
string type = parentParse.Type;
string outcome;
if (IsFirstChild(chunkParse, parentParse))
{
outcome = MaximumEntropyParser.StartPrefix + type;
}
else
{
outcome = MaximumEntropyParser.ContinuePrefix + type;
}
chunkParse.Label = outcome;
if (mEventType == EventType.Build)
{
events.Add(new SharpEntropy.TrainingEvent(outcome, mBuildContextGenerator.GetContext(chunks, currentChunk)));
}
int start = currentChunk - 1;
while (start >= 0 && (chunks[start]).Parent == parentParse)
{
start--;
}
if (IsLastChild(chunkParse, parentParse))
{
if (mEventType == EventType.Check)
{
events.Add(new SharpEntropy.TrainingEvent(MaximumEntropyParser.CompleteOutcome, mCheckContextGenerator.GetContext(chunks, type, start + 1, currentChunk)));
}
//perform reduce
int reduceStart = currentChunk;
int reduceEnd = currentChunk;
while (reduceStart >= 0 && chunks[reduceStart].Parent == parentParse)
{
reduceStart--;
}
reduceStart++;
if (!(type == MaximumEntropyParser.TopNode))
{
Parse[] reducedChunks = new Parse[chunks.Length - (reduceEnd - reduceStart + 1) + 1]; //total - num_removed + 1 (for new node)
//insert nodes before reduction
for (int reductionIndex = 0, reductionCount = reduceStart; reductionIndex < reductionCount; reductionIndex++)
{
reducedChunks[reductionIndex] = chunks[reductionIndex];
}
//insert reduced node
reducedChunks[reduceStart] = parentParse;
//insert nodes after reduction
int currentReductionIndex = reduceStart + 1;
for (int afterReductionIndex = reduceEnd + 1; afterReductionIndex < chunks.Length; afterReductionIndex++)
{
reducedChunks[currentReductionIndex] = chunks[afterReductionIndex];
currentReductionIndex++;
}
chunks = reducedChunks;
currentChunk = reduceStart - 1; //currentChunk will be incremented at end of loop
}
else
{
chunks = new Parse[0];
}
}
else
{
if (mEventType == EventType.Check)
{
events.Add(new SharpEntropy.TrainingEvent(MaximumEntropyParser.IncompleteOutcome, mCheckContextGenerator.GetContext(chunks, type, start + 1, currentChunk)));
}
}
}
currentChunk++;
}
}