// Initialize the stop word list.
public static void InitializeList(string sStopListPath)
{
goHashTable = new System.Collections.Hashtable();
TextReader oTR = File.OpenText(sStopListPath);
string sText = oTR.ReadToEnd();
oTR.Close();
oTR = null;
Regex oRegex = new Regex("([ \\t{}():;. \n])");
sText = sText.ToLower();
String[] words = oRegex.Split(sText);
for (int i = 0; i < words.Length; i++)
{
words[i] = words[i].Trim();
}
for (int i = 0; i < words.Length; i++)
{
MatchCollection mc = oRegex.Matches(words[i]);
if (mc.Count <= 0 && words[i].Trim().Length > 0 &&
!StopWordsList.IsStopWord(words[i]))
{
goHashTable.Add(words[i], "");
}
}
}
// Get the words from the string. Optional use of stopwords
public string[] GetWords(string sText, bool bUseStopWords)
{
// Tokenize the string
Regex oRegex = new Regex("([ \\t{}():;. \n])");
sText = sText.ToLower();
String[] words = oRegex.Split(sText);
ArrayList oArraylist = new ArrayList();
for (int i = 0; i < words.Length; i++)
{
MatchCollection mc = oRegex.Matches(words[i]);
if (mc.Count <= 0 && words[i].Trim().Length > 0)
{
if (bUseStopWords)
{
if (!StopWordsList.IsStopWord(words[i]))
{
oArraylist.Add(words[i]);
}
}
else
{
oArraylist.Add(words[i]);
}
}
}
// Cleaning up the extra characters after tokenization.
char[] bothsidestrimchar = { '\'', '<', '>', '/', ':', ';', '"', '{', '}', '|', '\\', '[', ']', '.', ',', '~', '`', '!', '?', '@', '#', '%', '^', '&', '*', '(', ')', '_', '-', '+', '=' };
char[] endtrimchar = { '$' };
for (int i = 0; i < oArraylist.Count; i++)
{
string sObj = (oArraylist[i] as string);
sObj = sObj.Trim();
sObj = sObj.Trim(bothsidestrimchar);
sObj = sObj.TrimEnd(endtrimchar);
oArraylist[i] = sObj;
}
int arr_cnt = 0;
for (int i = 0; i < oArraylist.Count; i++)
{
if (((string)oArraylist[i]).Trim().Length > 0)
{
arr_cnt++;
}
}
string[] oArray = new string[arr_cnt];
for (int i = 0, j = 0; i < oArraylist.Count; i++)
{
if (((string)oArraylist[i]).Trim().Length > 0)
{
oArray[j] = (string)oArraylist[i];
j++;
}
}
return(oArray);
}
// List of initializations.
public void Init()
{
StopWordsList.InitializeList(this.LSIAppPath + @"\StopList\StopList.txt");
_lsiConfig = new LSIConfiguration();
}
