public ActualTopics()
 {
     HasOptionalWords        = false;
     ActualTopicList         = new List <Topic>();
     TotalKeywords           = 0;
     OtherOptionalWords      = new List <string>();
     IsOtherOptionalWordsHit = new List <bool>();
     _stemmer = new Porter2Stemmer.EnglishPorter2Stemmer();
 }