public float[][] GetTrainData()
{
//List<Profile> profiles = Profile.GetAll();
int profileCount = Profiles.Count();
int questionCount = Questions.Count();
//using (SQLiteConnection connection = new SQLiteConnection(App.DatabaseLocation))
//{
// profiles = connection.Table<Profile>().ToList();
// Profiles = new ObservableCollection<Profile>(profiles as List<Profile>);
//}
//1 sample by candidate
float[][] ret = new float[profileCount][];
for (int i = 0; i < profileCount; i++)
{
//number of features equal to number of questions
//+1 for the class attributed to this train sample
ret[i] = new float[questionCount + 1];
for (int j = 0; j < questionCount; j++)
{
//get the choice of the i candidate for the j question (+1 as Primary key starts from 1)
ret[i][j] = ProfileQuestions.SingleOrDefault(pq => pq.Profile.Id == i + 1 && pq.Question.Id == j + 1).Choice;
//ProfileQuestion pq = ProfileQuestion.GetProfileQuestion(i + 1, j + 1);
//ret[i][j] = pq.Choice;
}
//last column is the attributed class
ret[i][questionCount] = i;
}
return(ret);
}
internal bool ContainsImportQuestion(ProfileImportQuestion importQuestion)
{
if (ProfileQuestions.Where(x => x.Question == importQuestion.Question).FirstOrDefault() == null)
{
return(false);
}
else
{
return(true);
}
}
private void AddQuestionToCollections(ProfileQuestion question)
{
ProfileQuestions.Add(question);
if (question.IsCustomQuestion)
{
dictionaryCustomQuestions[question.CustomQuestionID] = question;
}
else
{
dictionaryDefaultQuestions[question.QuestionDefaultID] = question;
}
}
private int GetMaxQuestionNumber()
{
int maxQuestionNumber;
if (ProfileQuestions.Count() > 0)
{
maxQuestionNumber = ProfileQuestions.Max(x => x.SubLabelNumber);
}
else
{
maxQuestionNumber = 0;
}
return(maxQuestionNumber);
}
public void RemoveQuestion(ProfileQuestion profileQuestion)
{
ProfileQuestions.Remove(profileQuestion);
}