/// <summary>
/// Detector instance can be constructed via etectorFactory#create().
/// </summary>
/// <param name="factory">DetectorFactory instance (only DetectorFactory inside)</param>
public Detector(DetectorFactory factory)
{
this.wordLangProbMap = factory.wordLangProbMap;
this.langlist = factory.langlist;
this.text = new StringBuilder();
this.seed = factory.seed;
}
/// <summary>
/// load profiles
/// </summary>
/// <returns>false if load success</returns>
private bool loadProfile()
{
string profileDirectory = get("directory") + "/";
try
{
DetectorFactory.loadProfile(profileDirectory);
long?seed = getLong("seed");
if (seed != null)
{
DetectorFactory.setSeed(seed.Value);
}
return(false);
}
catch (LangDetectException e)
{
System.Console.WriteLine("ERROR: " + e.StackTrace);
return(true);
}
}
/// <summary>
/// Language detection test for each file (--detectlang option)
/// <para />
/// usage: --detectlang -d [profile directory] -a [alpha] -s [seed] [test file(s)]
/// </summary>
public void detectLang()
{
if (loadProfile())
{
return;
}
foreach (string filename in arglist)
{
using (StreamReader _is = new StreamReader(filename, System.Text.Encoding.UTF8))
{
Detector detector = DetectorFactory.create(getDouble("alpha", DEFAULT_ALPHA));
if (hasOpt("--debug"))
{
detector.setVerbose();
}
detector.append(_is);
System.Console.WriteLine(filename + ":" + detector.getProbabilities());
}
}
}
/// <summary>
/// Batch Test of Language Detection (--batchtest option)
/// <para />
/// usage: --batchtest -d [profile directory] -a [alpha] -s [seed] [test data(s)]
/// <para />
/// The format of test data(s):
/// <para />
/// [correct language name]\t[text body for test]\n
/// </summary>
public void batchTest()
{
if (loadProfile())
{
return;
}
IDictionary <string, IList <string> > result = new Dictionary <string, IList <string> >();
foreach (string filename in arglist)
{
using (StreamReader _is = new StreamReader(filename, System.Text.Encoding.UTF8))
{
while (!_is.EndOfStream)
{
string line = _is.ReadLine();
int idx = line.IndexOf('\t');
if (idx <= 0)
{
continue;
}
string correctLang = line.Substring(0, idx);
string text = line.Substring(idx + 1);
Detector detector = DetectorFactory.create(getDouble("alpha", DEFAULT_ALPHA));
detector.append(text);
string lang = "";
lang = detector.detect();
if (!result.ContainsKey(correctLang))
{
result[correctLang] = new List <string>();
}
result[correctLang].Add(lang);
if (hasOpt("--debug"))
{
System.Console.WriteLine(correctLang + "," + lang + "," + (text.Length > 100 ? text.Substring(0, 100) : text));
}
}
List <string> langlist = new List <string>(result.Keys);
langlist.Sort();
int totalCount = 0, totalCorrect = 0;
foreach (string lang in langlist)
{
IDictionary <string, int> resultCount = new Dictionary <string, int>();
int count = 0;
IList <string> list = result[lang];
foreach (string detectedLang in list)
{
++count;
if (resultCount.ContainsKey(detectedLang))
{
++resultCount[detectedLang];
}
else
{
resultCount[detectedLang] = 1;
}
}
int correct = resultCount.ContainsKey(lang) ? resultCount[lang] : 0;
double rate = correct / (double)count;
System.Console.WriteLine(string.Format("{0} ({1}/{2}={3:##}): {4}", lang, correct, count, rate, resultCount));
totalCorrect += correct;
totalCount += count;
}
System.Console.WriteLine(string.Format("total: %d/%d = %.3f", totalCorrect, totalCount, totalCorrect / (double)totalCount));
}
}
}