public List <Term> Run(List <string> filePaths)
{
var watchAll = System.Diagnostics.Stopwatch.StartNew();
var watch = System.Diagnostics.Stopwatch.StartNew();
StopList stop = new StopList();
Normalizer lemmatizer = new Normalizer();
NounPhraseExtractor nounPhraseExtractor = new NounPhraseExtractor(stop, lemmatizer);
GlobalIndexBuilder builder = new GlobalIndexBuilder();
List <Document> documents = new List <Document>();
foreach (string filePath in filePaths)
{
documents.Add(new FileDocument(filePath));
}
watch.Stop();
Console.WriteLine("Setup: " + watch.ElapsedMilliseconds + " ms");
watch = System.Diagnostics.Stopwatch.StartNew();
GlobalIndex termDocIndex = builder.Build(documents, nounPhraseExtractor);
watch.Stop();
Console.WriteLine("GlobalIndexBuilder.Build(): " + watch.ElapsedMilliseconds + " ms");
watch = System.Diagnostics.Stopwatch.StartNew();
FeatureTermNest termNest = new FeatureTermNestBuilder().Build(termDocIndex);
watch.Stop();
Console.WriteLine("FeatureTermNestBuilder.Build: " + watch.ElapsedMilliseconds + " ms");
watch = System.Diagnostics.Stopwatch.StartNew();
FeatureCorpusTermFrequency termCorpusFrequency = new FeatureCorpusTermFrequencyBuilder().Build(termDocIndex);
watch.Stop();
Console.WriteLine("FeatureCorpusTermFrequencyBuilder.Build: " + watch.ElapsedMilliseconds + " ms");
watch = System.Diagnostics.Stopwatch.StartNew();
FileResultWriter writer = new FileResultWriter(termDocIndex);
CValueAlgorithm algorithm = new CValueAlgorithm();
AlgorithmContext context = new AlgorithmContext(termCorpusFrequency, termNest);
List <Term> terms = algorithm.Execute(context);
watch.Stop();
watchAll.Stop();
Console.WriteLine("CValueAlgorithm.Execute: " + watch.ElapsedMilliseconds + " ms");
Console.WriteLine("Everything: " + watchAll.ElapsedMilliseconds + " ms");
return(terms);
}
public static string ApplyTrimStopwords(string splitCandidate, StopList stopList, Normalizer normalizer)
{
if (stopList.IsStopWord(Regex.Replace(normalizer.Normalize(splitCandidate), @"\s+", "")))
{
return(null);
}
string[] words = splitCandidate.Split(new char[0], StringSplitOptions.RemoveEmptyEntries);
if (words.Length == 0)
{
return(splitCandidate);
}
int firstIndex = words.Length;
int lastIndex = -1;
for (int i = 0; i < words.Length; i++)
{
if (!stopList.IsStopWord(words[i]))
{
firstIndex = i;
break;
}
}
for (int i = words.Length - 1; i >= 0; i--)
{
if (!stopList.IsStopWord(words[i]))
{
lastIndex = i;
break;
}
}
if (firstIndex <= lastIndex)
{
string trimmed = "";
for (int i = firstIndex; i <= lastIndex; i++)
{
trimmed += words[i] + " ";
}
return(trimmed.Trim());
}
return(null);
}
public NounPhraseExtractor(StopList stopList, Normalizer normalizer)
{
this.stopList = stopList;
this.normalizer = normalizer;
}