public ClassifierViewModel(MainWindowViewModel mainWindowViewModel)
{
_mainWindowViewModel = mainWindowViewModel;
ScreenToWorld = Matrix <double> .Build.DiagonalIdentity(3);
WorldToScreen = ScreenToWorld;
Messenger.Default.Register <Matrix <double> >(this, (m) =>
{
ScreenToWorld = m;
WorldToScreen = ScreenToWorld.Inverse();
});
mainWindowViewModel.Layers.CollectionChanged += BandsOnCollectionChanged;
ClassifierNamesEnumerable = Enum.GetNames(typeof(Classifier));
ClassifierViewModels = Enum.GetValues(typeof(Classifier))
.Cast <Classifier>()
.ToDictionary(c => c, c => c.CreateClassifierViewModel());
FeaturesViewModel = new FeaturesViewModel(mainWindowViewModel);
RemoveAllFeaturesCommand = new RelayCommand(() => FeaturesViewModel.RemoveAllFeatures(), () => FeaturesViewModel.HasFeatures());
RemoveSelectedFeatureVectorCommand = new RelayCommand(RemoveSelectedFeature, CanRemoveSelectedFeature);
PropertyChanged += (sender, args) =>
{
if (args.PropertyName == nameof(SelectededClassifier))
{
if (CurrentClassifierViewModel != null)
{
CurrentClassifierViewModel.PropertyChanged -= CurrentClassifierViewModelOnPropertyChanged;
}
CurrentClassifierViewModel = ClassifierViewModels[SelectededClassifier];
if (CurrentClassifierViewModel != null)
{
CurrentClassifierViewModel.PropertyChanged += CurrentClassifierViewModelOnPropertyChanged;
}
MarkClassifierNotTrained();
}
};
ExportFeaturesCommand = new RelayCommand(ExportTrainingSet, CanExportTrainingSet);
ImportFeatureCommand = new RelayCommand(ImportTrainingSet, CanImportTrainingSet);
TrainCommand = new RelayCommand(Train, CanTrain);
GridSearchCommand = new RelayCommand(GridSearchAsync, () => FeaturesViewModel.HasFeatures());
ComputeConfusionMatrixCommand = new RelayCommand(ComputeConfusionMatrixAsync, () => FeaturesViewModel.HasFeatures());
SelectededClassifier = Classifier.SVM;
}
public void UpdateClassifierOptionsProperties(ClassifierViewModelBase classifierViewModel)
{
if (_currentClassifierViewModel != null)
{
_currentClassifierViewModel.PropertyChanged -= UpdateViewPropertyChangeHandler;
}
_currentClassifierViewModel = classifierViewModel;
if (classifierViewModel == null)
{
DataGrid.Children.Clear();
return;
}
_currentClassifierViewModel = classifierViewModel;
_currentClassifierViewModel.PropertyChanged += UpdateViewPropertyChangeHandler;
UpdateView();
}
