private TreebankStats.ObservedCorpusStats GatherStats(DiskTreebank tb, string name)
{
TreebankStats.ObservedCorpusStats ocs = new TreebankStats.ObservedCorpusStats(name);
if (makeVocab)
{
trainVocab = Generics.NewHashSet();
}
System.Console.Out.WriteLine("Reading treebank:");
foreach (Tree t in tb)
{
Pair <int, int> treeFacts = DissectTree(t, ocs, makeVocab);
ocs.AddStatsForTree(t.Yield().Count, treeFacts.First(), treeFacts.Second());
if (ocs.numTrees % 100 == 0)
{
System.Console.Out.Write(".");
}
else
{
if (ocs.numTrees % 8001 == 0)
{
System.Console.Out.WriteLine();
}
}
}
ocs.ComputeFinalValues();
System.Console.Out.WriteLine("done!");
return(ocs);
}
private static void Display(TreebankStats.ObservedCorpusStats corpStats, bool displayWords, bool displayOOV)
{
System.Console.Out.WriteLine("####################################################################");
System.Console.Out.WriteLine("## " + corpStats.GetName());
System.Console.Out.WriteLine("####################################################################");
System.Console.Out.WriteLine();
corpStats.Display(displayWords, displayOOV);
}
/// <summary>Returns pair of (depth,breadth) of tree.</summary>
/// <remarks>Returns pair of (depth,breadth) of tree. Does a breadth-first search.</remarks>
/// <param name="t"/>
/// <param name="ocs"/>
/// <param name="addToVocab"/>
private static Pair <int, int> DissectTree(Tree t, TreebankStats.ObservedCorpusStats ocs, bool addToVocab)
{
Stack <Pair <int, Tree> > stack = new Stack <Pair <int, Tree> >();
stack.Push(new Pair <int, Tree>(0, t));
int maxBreadth = 0;
int maxDepth = -1;
if (t == null)
{
throw new Exception("Null tree passed to dissectTree()");
}
else
{
while (!stack.IsEmpty())
{
Pair <int, Tree> depthNode = stack.Pop();
int nodeDepth = depthNode.First();
Tree node = depthNode.Second();
if (nodeDepth != maxDepth)
{
maxDepth = nodeDepth;
if (node.IsPhrasal() && stack.Count + 1 > maxBreadth)
{
maxBreadth = stack.Count + 1;
}
}
if (node.IsPhrasal())
{
ocs.AddPhrasalBranch(node.Value(), node.Children().Length);
}
else
{
if (node.IsPreTerminal())
{
ocs.posTags.IncrementCount(node.Value());
}
else
{
if (node.IsLeaf())
{
ocs.words.IncrementCount(node.Value());
if (addToVocab)
{
trainVocab.Add(node.Value());
}
}
}
}
foreach (Tree kid in node.Children())
{
stack.Push(new Pair <int, Tree>(nodeDepth + 1, kid));
}
}
}
return(new Pair <int, int>(maxDepth, maxBreadth));
}
private static TreebankStats.ObservedCorpusStats AggregateStats(IList <TreebankStats.ObservedCorpusStats> allStats)
{
if (allStats.Count == 0)
{
return(null);
}
else
{
if (allStats.Count == 1)
{
return(allStats[0]);
}
}
TreebankStats.ObservedCorpusStats agStats = new TreebankStats.ObservedCorpusStats("CORPUS");
foreach (TreebankStats.ObservedCorpusStats ocs in allStats)
{
agStats.numTrees += ocs.numTrees;
agStats.breadth2 += ocs.breadth2;
Sharpen.Collections.AddAll(agStats.breadths, ocs.breadths);
agStats.depth2 += ocs.depth2;
Sharpen.Collections.AddAll(agStats.depths, ocs.depths);
agStats.length2 += ocs.length2;
Sharpen.Collections.AddAll(agStats.lengths, ocs.lengths);
if (ocs.minLength < agStats.minLength)
{
agStats.minLength = ocs.minLength;
}
if (ocs.maxLength > agStats.maxLength)
{
agStats.maxLength = ocs.maxLength;
}
if (ocs.minBreadth < agStats.minBreadth)
{
agStats.minBreadth = ocs.minBreadth;
}
if (ocs.maxBreadth > agStats.maxBreadth)
{
agStats.maxBreadth = ocs.maxBreadth;
}
if (ocs.minDepth < agStats.minDepth)
{
agStats.minDepth = ocs.minDepth;
}
if (ocs.maxDepth > agStats.maxDepth)
{
agStats.maxDepth = ocs.maxDepth;
}
agStats.words.AddAll(ocs.words);
agStats.posTags.AddAll(ocs.posTags);
agStats.phrasalBranching2.AddAll(ocs.phrasalBranching2);
agStats.phrasalBranchingNum2.AddAll(ocs.phrasalBranchingNum2);
}
agStats.ComputeFinalValues();
return(agStats);
}
public virtual void Run(bool pathsAreFiles, bool displayWords, bool displayOOV)
{
if (useSplit)
{
IList <TreebankStats.ObservedCorpusStats> allSplitStats = new List <TreebankStats.ObservedCorpusStats>();
makeVocab = true;
foreach (KeyValuePair <TreebankStats.Split, ICollection <string> > split in splitFileLists)
{
DiskTreebank tb = tlpp.DiskTreebank();
IFileFilter splitFilter = new TreebankStats.SplitFilter(split.Value);
foreach (string path in pathNames)
{
tb.LoadPath(path, splitFilter);
}
TreebankStats.ObservedCorpusStats splitStats = GatherStats(tb, languageName.ToString() + "." + split.Key.ToString());
allSplitStats.Add(splitStats);
makeVocab = false;
}
Display(AggregateStats(allSplitStats), displayWords, displayOOV);
foreach (TreebankStats.ObservedCorpusStats ocs in allSplitStats)
{
Display(ocs, displayWords, displayOOV);
}
}
else
{
if (pathsAreFiles)
{
makeVocab = true;
foreach (string path in pathNames)
{
DiskTreebank tb = tlpp.DiskTreebank();
tb.LoadPath(path, null);
TreebankStats.ObservedCorpusStats stats = GatherStats(tb, languageName.ToString() + " " + path);
Display(stats, displayWords, displayOOV);
makeVocab = false;
}
}
else
{
trainVocab = Generics.NewHashSet();
DiskTreebank tb = tlpp.DiskTreebank();
foreach (string path in pathNames)
{
tb.LoadPath(path, null);
}
TreebankStats.ObservedCorpusStats allStats = GatherStats(tb, languageName.ToString());
Display(allStats, displayWords, displayOOV);
}
}
}
