private void OnRecommendMovie(object obj)
{
var dataRepository = Container.GetInstance <IDataRepository>();
var userMovies = dataRepository.TrainingRatings.Where(r => r.User == SelectedUser).Select(r => r.Movie);
var unratedMovies = new ConcurrentBag <Movie>();
Parallel.ForEach(dataRepository.Movies, movie =>
{
if (!userMovies.Contains(movie))
{
unratedMovies.Add(movie);
}
});
var results = new ConcurrentBag <IRating>();
Parallel.ForEach(unratedMovies, m =>
{
try
{
var rating = SelectedMethod.RecommendSubject(SelectedUser, m);
if (rating != null)
{
results.Add(rating);
}
}
catch (Exception)
{
}
});
RecommendedMovies = new ObservableCollection <IRating>(results.OrderBy(r => r.Value).Reverse().Take(10));
}
private void OnGetRecommendationValue(object obj)
{
try
{
RecommendationValue = SelectedMethod.RecommendSubject(SelectedUser, SelectedMovie);
}
catch (Exception e)
{
MessageBox.Show("Problem z wyznaczeniem wartości rekomendacji", "Błąd", MessageBoxButton.OK, MessageBoxImage.Error);
}
}
