void IUtf8JsonSerializable.Write(Utf8JsonWriter writer)
{
writer.WriteStartObject();
if (Patterns.Any())
{
writer.WritePropertyName("patterns");
writer.WriteStartArray();
foreach (var item in Patterns)
{
writer.WriteStringValue(item);
}
writer.WriteEndArray();
}
else
{
writer.WriteNull("patterns");
}
if (PreserveOriginal != null)
{
writer.WritePropertyName("preserveOriginal");
writer.WriteBooleanValue(PreserveOriginal.Value);
}
writer.WritePropertyName("@odata.type");
writer.WriteStringValue(ODataType);
writer.WritePropertyName("name");
writer.WriteStringValue(Name);
writer.WriteEndObject();
}
public double[] Classify(Instance instance)
{
if (Patterns == null || !Patterns.Any())
{
return(null);
}
if (!_isInitialized)
{
Initialize();
}
var matchedPattern = _filteredPatterns.Where(p => p.IsMatch(instance));
if (!matchedPattern.Any())
{
return(null);
}
var selectedPatterns = SelectionPolicy.SelectPatterns(instance, matchedPattern);
if (!selectedPatterns.Any())
{
return(null);
}
var votes = VotesAggregator.Aggregate(selectedPatterns);
if (VotesNormalizer != null)
{
votes = VotesNormalizer.Normalize(votes);
}
return(votes);
}
public void Save()
{
var dir = "Materials".GetMyDocs();
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
string folder = dir + "\\" + this.Category;
if (!Directory.Exists(folder))
{
Directory.CreateDirectory(folder);
}
XDocument doc = new XDocument(new XElement(this.Category.ToString()))
{
Declaration = new XDeclaration("1.0", "utf-8", "yes")
};
doc.Root.Add(new XAttribute("Model", this.Model));
doc.Root.Add(new XAttribute("Manufacturer", this.Manufacturer));
doc.Root.Add(new XAttribute("Color", this.Color));
doc.Root.Add(new XAttribute("Description", this.Description));
if (Patterns.Any())
{
foreach (var pat in this.Patterns)
{
XElement ele = new XElement("Pattern");
ele.Add(new XAttribute("Description", pat));
doc.Root.Add(ele);
}
}
if (Projects.Any())
{
foreach (var prj in this.Projects)
{
XElement ele = new XElement("Project");
ele.Add(new XAttribute("Description", prj));
doc.Root.Add(ele);
}
}
string fn = folder + "\\" + this.Model + ".xml";
doc.Save(fn);
}
private void GoBack()
{
bool hasChanges = Patterns.Any(x => x.HasChanges);
if (hasChanges)
{
bool result = _dialogService.ShowConfirmationDialog("При переходе все изменения будут потеряны. Продолжить?");
if (!result)
{
return;
}
}
_navigator.NavigateBack(this);
}
/// <summary>
/// Generate decision tree via ID3 algorithm
/// </summary>
protected override void DoTrain()
{
base.DoTrain();
if (Patterns == null || !Patterns.Any())
{
throw new MLException("Patterns are empty or null");
}
if (Informativity == null)
{
throw new MLException("Informativity index is null");
}
var root = trainID3Core(Patterns, TrainingSample, Informativity);
m_Result = new DecisionTree <TObj>(root);
}
