private void InitializeWordSeg(string strLexicalFileName)
{
wordseg = new WordSeg.WordSeg();
//Load lexical dictionary
wordseg.LoadLexicalDict(strLexicalFileName, true);
//Initialize word breaker's token instance
wbTokens = wordseg.CreateTokens();
}
static void Main(string[] args)
{
if (args.Length != 3)
{
Console.WriteLine("GenerateTermSynPattern.exe [input:word breaker lexical file] [input:query_clusterId_freq_clickweight file] [output:term_syn_pattern file]");
return;
}
wordseg = new WordSeg.WordSeg();
wordseg.LoadLexicalDict(args[0], true);
//Create tokens which is local-thread structure
//The max word segment legnth is MAX_SEGMENT_LENGTH
tokens = wordseg.CreateTokens();
StreamReader sr = new StreamReader(args[1]);
List <QueryItem> qiList = new List <QueryItem>();
string strLastUrl = "";
long recordCnt = 0;
while (sr.EndOfStream == false)
{
string strLine = sr.ReadLine();
recordCnt++;
string[] items = strLine.Split('\t');
string strClusterId = items[1];
QueryItem qi = new QueryItem();
qi.strQuery = items[0];
// qi.strQuery = JPNUtils.ToHalfKana(qi.strQuery);
qi.strQuery = JPNUtils.ToDBC(qi.strQuery);
qi.strQuery = qi.strQuery.Replace(" ", "");
qi.strQuery = qi.strQuery.ToLower();
qi.freq = int.Parse(items[2]);
qi.clickweight = double.Parse(items[3]);
////Query url whose frequency or clickweight is too low will be ignored.
//if (qi.clickweight < 5.0)
//{
// continue;
//}
if (strLastUrl == "")
{
qiList.Add(qi);
}
else
{
if (strLastUrl == strClusterId)
{
qiList.Add(qi);
}
else
{
//If too many unique queries click the same url,
//The url may be low quaility, since it has too many
//different meaning, so ignore this cluster
if (qiList.Count < 100)
{
StatPatternList(qiList);
}
qiList.Clear();
qiList.Add(qi);
}
}
strLastUrl = strClusterId;
if (recordCnt % 10000000 == 0)
{
Console.WriteLine("Process {0} records...", recordCnt);
UpdateSaveTermSyn(args[2]);
}
}
UpdateSaveTermSyn(args[2]);
sr.Close();
}
/// <summary>
/// Tokenizate given corpus. The output corpus format is "word1 word2 ... wordN \t frequency"
/// </summary>
/// <param name="args"></param>
static void Main(string[] args)
{
if (args.Length < 3 || args.Length > 4)
{
Console.WriteLine("tokenization.exe [lexical dictionary] [input file] [output file] <min-frequency>");
Console.WriteLine(" min-frequency: default value is 1");
return;
}
int minFreq = 1;
if (args.Length == 4)
{
minFreq = int.Parse(args[3]);
}
WordSeg.WordSeg wordseg = new WordSeg.WordSeg();
WordSeg.Tokens tokens = null;
//Load lexical dictionary with raw text format
if (File.Exists(args[0]) == false)
{
Console.WriteLine("lexical dictionary isn't existed.");
return;
}
wordseg.LoadLexicalDict(args[0], true);
tokens = wordseg.CreateTokens();
if (File.Exists(args[1]) == false)
{
Console.WriteLine("{0} isn't existed.", args[1]);
return;
}
StreamReader sr = new StreamReader(args[1], Encoding.UTF8);
StreamWriter sw = new StreamWriter(args[2], false, Encoding.UTF8);
string strLine = null;
long lineCnt = 0;
while ((strLine = sr.ReadLine()) != null)
{
string[] items = strLine.Split('\t');
long freq = 1;
if (items.Length == 2)
{
//Normalize frequency for smoothing when building LM
freq = long.Parse(items[1]) - (minFreq - 1);
if (freq <= 0)
{
continue;
}
}
lineCnt++;
if (lineCnt % 100000 == 0)
{
Console.Write("{0}...", lineCnt);
}
//Simple normalize text
string strQuery = items[0].ToLower().Trim();
//Segment text by lexical dictionary
wordseg.Segment(strQuery, tokens, false);
StringBuilder sb = new StringBuilder();
//Parse each broken token
for (int i = 0; i < tokens.tokenList.Count; i++)
{
string strTerm = tokens.tokenList[i].strTerm.Trim();
if (strTerm.Length > 0)
{
sb.Append(strTerm);
sb.Append(" ");
}
}
//output token with begin/end flag
sw.WriteLine("{0}\t{1}", sb.ToString().Trim(), freq);
}
sr.Close();
sw.Close();
}