public Topic( String topic,Trie fringeTrie ,Trie allwords , Dictionary<string , Distance.Histogram> dict )
{
this.topic = topic;
this.fringeTrie = fringeTrie;
this.historyDicti = dict;
this.allwords = allwords;
}
public static void initTrieFromString( String s , Trie t )
{
string[] words = s.Replace("\r" , "").Split(' ' , '\n' , ',' , '.');
foreach ( var w in words ) {
bool valid = true;
foreach ( char c in w )
valid &= Char.IsLetter(c);
if ( !valid ) continue;
t.add(w);
}
}
static Topic createTopic( string topic,string text )
{
Trie t = new Trie(text);
t.removeAll(stopWords);
Trie t2 = new Trie(text);
Dictionary<string , Histogram> dict = new Dictionary<string , Histogram>();
foreach ( Node wordNode in stopWords.getAll() ) {
string word = wordNode.ToString();
Histogram h = new Histogram(word , text);
dict.Add(word , h);
}
return new Topic(topic, t ,t2, dict);
}
public static Trie readTrie(string fileName) {
Trie trie=new Trie();
StreamReader reader=null;
try {
reader=new StreamReader(fileName);
string word;
while ((word=reader.ReadLine())!=null)
trie.addAll(word);
} catch (Exception e) {
Console.WriteLine(e.ToString());
} finally {
if (reader!=null) reader.Close();
}
return trie;
}
public static Trie readTrie(string fileName , Filter<String> filter) {
Trie trie=new Trie();
StreamReader reader = null;
try {
reader = new StreamReader(fileName);
string word;
while ((word=reader.ReadLine())!=null) {
string[] words = word.Replace("\r" , "").Split(' ' , '\n' , ',' , '.');
foreach ( var w in words ) {
bool valid = true;
foreach ( char c in w )
valid &= Char.IsLetter(c);
if ( !valid ) continue;
if ( !filter(w) )
trie.add(w);
}
}
} catch (Exception e) {
Console.WriteLine(e.ToString());
} finally {
if (reader!=null) reader.Close();
}
return trie;
}
public TrieTraveler( TrieTraveler trieTraveler )
{
current = trieTraveler.current;
currentPosition = trieTraveler.currentPosition;
trie = trieTraveler.trie;
sb = new StringBuilder(trieTraveler.sb.ToString());
}
public TrieTraveler( Trie t )
{
trie = t;
current = trie.root;
sb = new StringBuilder();
}
public void removeAll( Trie t )
{
foreach ( Node n in t.getAll() ) {
remove(n.ToString());
}
}
public TrieSuggester( Trie trie )
{
this.trie = trie;
traveler = new TrieTraveler(trie);
}
private void calculateSimiliarity( Trie window )
{
List<Node> windowWords = window.getAll();
List<string> windowVector = new List<string>();
Distribution X = new Distribution();
double xmax = 0;
foreach ( Node n in windowWords ) {
string s = n.ToString();
windowVector.Add(s);
double x = window.weight > 0 ? n.getNumOfAppearances() / (double)window.weight : 0;
X.add(s , x );
xmax += x * x;
}
double rmin = 0;
foreach ( Topic t in SuggestionUtils.fringeTopics.Values ) {
Distribution Y = t.topicVector;
t.rtmin = 0;
for ( int i = 0 ; i < Math.Max(Y.count , X.count) ; i++ )
t.rtmin += Math.Pow(Y[i] - X[i] , 2);
rmin = Math.Min(rmin,t.rtmin);
t.rtmax = xmax;
for ( int i = 0 ; i < Y.count ; i++ )
t.rtmax += Math.Pow(Y[i], 2);
List<string> union = new List<string>(windowVector);
foreach (object o in Y.keys )
if (union.Contains((string)o))
union.Add((string)o);
t.rt = 0;
for ( int i = 0 ; i < union.Count ; i++ ) {
string s = union[i];
double xs = X[s];
double ys = Y[s];
t.rt += Math.Pow(xs - ys , 2);
}
}
foreach ( Topic t in SuggestionUtils.fringeTopics.Values ) {
double frt = ( t.rt - rmin ) / ( t.rtmax - rmin );
t.similiarity = similiarity1(frt);
if ( onTopicReady != null ) onTopicReady(t);
Form3.updateChartForTopic(t.topic , frt);
Stats.updateChartForTopic(t.topic , frt);
}
Form2.showPlots(1);
}
private WindowHandler()
{
stopWords = SuggestionUtils.stopWords;
bw = new Worker("WindowHandlerThread");
}
