private Polarity.Common.Polarity AnalyseMessage(IShortMessage message)
{
double simPos = Similarity(message, positive);
if (simPos > 3.1)
{
return Polarity.Common.Polarity.POSITIVE;
}
double simNeg = Similarity(message, negative);
if (simNeg > 3.1)
{
return Polarity.Common.Polarity.NEGATIVE;
}
Polarity.Common.Polarity polarity = Polarity.Common.Polarity.NEUTRAL;
if (Math.Abs(simPos - simNeg) < 0.4)
{
return polarity;
}
else if (simPos > simNeg)
{
polarity = Polarity.Common.Polarity.POSITIVE;
}
else
{
polarity = Polarity.Common.Polarity.NEGATIVE;
}
return polarity;
}
public ShortMessage()
{
dataShortMessage = Factory.GetShortMessage();
}
private double Weight(string word, IShortMessage message)
{
string[] sep = new string[1];
sep[0] = word;
int tf = message.RawContent.Split(sep, StringSplitOptions.RemoveEmptyEntries).Length - 1;
double df = 0;
foreach(IShortMessage m in corpus)
{
if(m.RawContent.IndexOf(word) >= 0)
{
++df;
}
}
double idf = Math.Log(((double)corpus.Count) / df);
double gini = Gini(word);
return tf * idf * gini;
}
private double Similarity(IShortMessage message, IDictionary<string, uint> category)
{
return 0.0;
}
public ShortMessage()
{
this.dataShortMessage = RoadFlow.Data.Factory.Factory.GetShortMessage();
}
