very slow Italian stemmer

[fenis100]

I tried to develop a stemmer for Italian, but the bot is much slower. What am I doing wrong?
Debugging the code, I saw that the stemmer is called for each expression present in the siml for each message, is it correct?
My stemmer:
public class ItalianStemmer : StemmerOperations, Syn.Bot.Oscova.Interfaces.IStemmer
{
Annytab.Stemmer.IStemmer stemmer = new Annytab.Stemmer.ItalianStemmer();
public string Stem(string word)
{
return stemmer.GetSteamWord(word);
}
}

[Leslie]

Your approach is correct. Oscova will use the stemmer for all words in every expression. In order to speed up maybe you could implement a cache system using a Dictionary that will keep track of previously computed stems.