Пространство имён LearningExamplesView

LearningExamplesDataGridItem.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using CN2.Core.DataStructures;

 

namespace CN2.UC.LearningExamplesView

{

/// <summary>

/// Представляет пример обучающей выборки для элемента управления LearningExamplesView.

/// </summary>

public class LearningExamplesDataGridItem:IValidatable

{

/// <summary>

/// Возвращает и задаёт признак использования примера для элемента управления LearningExamplesView.

/// </summary>

public bool IsUse { get; set; }

/// <summary>

/// Возвращает и задаёт список значений предсказывающих атрибутов примера для элемента управления LearningExamplesView.

/// </summary>

public List<string> PredictiveAttributeValues { get; set; }

/// <summary>

/// Возвращает и задаёт значение решающего атрибута примера для элемента управления LearningExamplesView.

/// </summary>

public string DecisiveAttributeValue { get; set; }

 

public bool IsValid

{

get { return PredictiveAttributeValues.Count > 0 &&!DecisiveAttributeValue.Equals(string.Empty); }

}

 

public LearningExamplesDataGridItem()

{

IsUse = true;

PredictiveAttributeValues = new List<string>();

}

}

}

LearningExamplesView.xaml

<UserControl

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

xmlns:local="clr-namespace:CN2.UC.LearningExamplesView"

xmlns:NumericUpDown="clr-namespace:CN2.UC.NumericUpDown" x:Class="CN2.UC.LearningExamplesView.LearningExamplesView"

mc:Ignorable="d"

d:DesignHeight="300" d:DesignWidth="600">

<UserControl.Resources>

<Image x:Key="SaveImage" Source="../../Images/Save_16x.png"/>

<Image x:Key="OpenImage" Source="../../Images/Open_16x.png"/>

<Image x:Key="LearnImage" Source="../../Images/Learn_16x.png"/>

</UserControl.Resources>

<Grid>

<Menu x:Name="menu" Height="22" VerticalAlignment="Top">

<Button x:Name="buttonLoadExamples" Content="{StaticResource OpenImage}" Height="16" Width="20" Click="buttonLoadExamples_Click" ToolTip="Загрузить примеры из файла"/>

<Button x:Name="buttonSaveExamples" Content="{StaticResource SaveImage}" Height="16" Width="20" Click="buttonSaveExamples_Click" ToolTip="Сохранить примеры в файл"/>

<Label x:Name="labelStarSize" Content="STARSIZE:" Padding="0"/>

<NumericUpDown:NumericUpDown x:Name="numericUpDownStarSize" Value="3" Width="40"/>

<Label x:Name="labelHeapSize" Content="HEAPSIZE:" Padding="0"/>

<NumericUpDown:NumericUpDown x:Name="numericUpDownHeapSize" Value="3" Width="40"/>

<Label x:Name="labelCoversCount" Content="Количество наборов:" Padding="0"/>

<NumericUpDown:NumericUpDown x:Name="numericUpDownCoversCount" Value="2" Width="40"/>

<Button x:Name="buttonLearn" Content="{StaticResource LearnImage}" Height="16" Width="20" Click="buttonLearn_Click" ToolTip="Провести обучение"/>

</Menu>

<DataGrid x:Name="dataGrid" Margin="0,22,0,0" AutoGenerateColumns="False" CanUserReorderColumns="False" CanUserAddRows="True" CanUserDeleteRows="True" CanUserResizeRows="False" RowHeight="24" HeadersVisibility="Column" InitializingNewItem="dataGrid_InitializingNewItem" MouseDown="dataGrid_MouseDown" CellEditEnding="dataGrid_CellEditEnding" GotFocus="dataGrid_GotFocus" CanUserSortColumns="True"/>

</Grid>

</UserControl>

LearningExamplesView.xaml.sc

using System;

using System.Collections.Generic;

using System.Linq;

using System.Runtime.InteropServices;

using System.Text;

using System.Threading.Tasks;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Controls.Primitives;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

using System.Xml.Linq;

using CN2.Core.DataStructures;

using Microsoft.Win32;

using System.IO;

 

namespace CN2.UC.LearningExamplesView

{

/// <summary>

/// Interaction logic for ExamplesView.xaml

/// </summary>

public partial class LearningExamplesView: UserControl

{

/// <summary>

/// Набор типов атрибутов.

/// </summary>

private AttributeTypeSet _attributeTypeSet;

/// <summary>

/// Список примеров в представлении для элемента управления.

/// </summary>

private List<LearningExamplesDataGridItem> _items;

 

public LearningExamplesView()

{

InitializeComponent();

 

numericUpDownCoversCount.OnValueChanged += numericUpDownCoversCount_OnValueChanged;

}

 

public void SetAttributeTypes(AttributeTypeSet attributeTypesSet)

{

_attributeTypeSet = attributeTypesSet;

 

dataGrid.Columns.Clear();

 

DataGridCheckBoxColumn isUseColumn = new DataGridCheckBoxColumn()

{

Header = "Использовать",

Width = 30,

Binding = new Binding("IsUse")

};

dataGrid.Columns.Add(isUseColumn);

 

for (int i = 0; i < _attributeTypeSet.PredictiveAttributeTypes.Count; i++)

{

DataGridComboBoxColumn predictiveAttributeTypeColumn = new DataGridComboBoxColumn()

{

Header = _attributeTypeSet.PredictiveAttributeTypes[i].Name,

Width = 100,

ItemsSource = _attributeTypeSet.PredictiveAttributeTypes[i].Values,

TextBinding = new Binding("PredictiveAttributeValues[" + i + "]")

};

dataGrid.Columns.Add(predictiveAttributeTypeColumn);

}

 

DataGridComboBoxColumn decisiveAttributeValueColumn = new DataGridComboBoxColumn()

{

Header = _attributeTypeSet.DecisiveAttributeType.Name,

Width = 100,

ItemsSource = _attributeTypeSet.DecisiveAttributeType.Values,

TextBinding = new Binding("DecisiveAttributeValue"),

CellStyle =

new Style(typeof (DataGridCell)) {Setters = {new Setter() {Property = ForegroundProperty, Value = Brushes.Blue}}}

};

dataGrid.Columns.Add(decisiveAttributeValueColumn);

 

_items= new List<LearningExamplesDataGridItem>();

dataGrid.ItemsSource = _items;

}

 

#region средства для сериализации и десериализации списка примеров

 

private void buttonLoadExamples_Click(object sender, RoutedEventArgs e)

{

try

{

OpenFileDialog ofd = new OpenFileDialog()

{

Filter = SerializationData.FileDialogFilter,

Title = SerializationData.LoadExamplesFileDialogTitle

};

 

Nullable<bool> ofdResult = ofd.ShowDialog();

 

if (ofdResult!= null && ofdResult == true)

{

XDocument examplesXDocument = XDocument.Load(ofd.FileName);

foreach (var examplesXElement in examplesXDocument.Elements())

{

if (examplesXElement.Name.ToString().Equals(SerializationData.ExamplesNode))

{

foreach (var exampleXElement in examplesXElement.Elements())

{

if (exampleXElement.Name.ToString().Equals(SerializationData.ExampleNode))

{

LearningExamplesDataGridItem item = new LearningExamplesDataGridItem();

 

string[] precisiveValues = new string[_attributeTypeSet.PredictiveAttributeTypes.Count];

string decisiveValue = string.Empty;

 

// признак того, что следует перейти к следующзему примеру

bool isNeedContinue = false;

 

foreach (var exampleXAttribute in exampleXElement.Attributes())

{

if (exampleXAttribute.Name.ToString().Equals(SerializationData.IsUse))

{

bool isUse;

if (Boolean.TryParse(exampleXAttribute.Value, out isUse))

{

item.IsUse = isUse;

}

else

{

if (OnErrorOccured!= null)

{

OnErrorOccured(this, @"Недопустимое значение атрибута ""Использовать"".");

isNeedContinue = true;

break;

}

}

}

}

 

if (isNeedContinue)

{

continue;

}

 

foreach (var exampleAttributeXElement in exampleXElement.Elements())

{

int j = -2;

string value = string.Empty;

 

foreach (var exampleAttributeXAttribute in exampleAttributeXElement.Attributes())

{

switch (exampleAttributeXAttribute.Name.ToString())

{

case SerializationData.ExampleAttributeTypeName:

{

if (_attributeTypeSet.DecisiveAttributeType.Name.Equals(exampleAttributeXAttribute.Value))

{

j = -1;

}

else

{

for (int i = 0; i < _attributeTypeSet.PredictiveAttributeTypes.Count; i++)

{

if (_attributeTypeSet.PredictiveAttributeTypes[i].Name.Equals(exampleAttributeXAttribute.Value))

{

j = i;

break;

}

}

}

 

if (j == -2)

{

OnErrorOccured(this,

@"Тип атрибута """ + exampleAttributeXAttribute.Value +

@""" не определён в текущем наборе типов атрибутов.");

isNeedContinue = true;

break;

}

}

break;

 

case SerializationData.ExampleAttrinuteValue:

{

value = exampleAttributeXAttribute.Value;

}

break;

}

 

if (isNeedContinue)

{

break;

}

}

 

//todo проверить наличие значения у типа данных и если всё хорошо

 

if (j == -1)

{

decisiveValue = value;

}

else

{

precisiveValues[j] = value;

}

 

if (isNeedContinue)

{

break;

}

}

 

if (isNeedContinue)

{

continue;

}

 

for (int i = 0; i < _attributeTypeSet.PredictiveAttributeTypes.Count; i++)

{

item.PredictiveAttributeValues.Insert(i, precisiveValues[i]);

}

item.DecisiveAttributeValue = decisiveValue;

_items.Add(item);

}

}

}

}

 

dataGrid.Items.Refresh();

 

if (OnFileLoaded!= null)

{

OnFileLoaded(sender, "Примеры загружены из файла " + ofd.FileName + ".");

}

}

}

catch (Exception ex)

{

if (OnErrorOccured!= null)

{

OnErrorOccured(this, ex.Message);

}

}

}

 

private void buttonSaveExamples_Click(object sender, RoutedEventArgs e)

{

try

{

SaveFileDialog sfd = new SaveFileDialog()

{

Title = SerializationData.SaveExamplesFileDialogTitle,

Filter = SerializationData.FileDialogFilter,

FileName = "examples"

};

 

Nullable<bool> sfdResult = sfd.ShowDialog();

 

if (sfdResult!= null && sfdResult == true)

{

XElement examplesXElement = new XElement(SerializationData.ExamplesNode);

foreach (var example in _items)

{

XElement exampleXElement = new XElement(SerializationData.ExampleNode, new XAttribute(SerializationData.IsUse, example.IsUse));

for (int i = 0; i < _attributeTypeSet.PredictiveAttributeTypes.Count; i ++)

{

exampleXElement.Add(new XElement(SerializationData.ExampleAttributeNode,

new XAttribute(SerializationData.ExampleAttributeTypeName, _attributeTypeSet.PredictiveAttributeTypes[i].Name),

new XAttribute(SerializationData.ExampleAttrinuteValue, example.PredictiveAttributeValues[i])));

}

exampleXElement.Add(new XElement(SerializationData.ExampleAttributeNode,

new XAttribute(SerializationData.ExampleAttributeTypeName, _attributeTypeSet.DecisiveAttributeType.Name),

new XAttribute(SerializationData.ExampleAttrinuteValue, example.DecisiveAttributeValue)));

examplesXElement.Add(exampleXElement);

}

 

new XDocument(examplesXElement).Save(sfd.FileName);

 

if (OnFileSaved!= null)

{

OnFileSaved(sender, "Примеры сохранены в файл " + sfd.FileName + ".");

}

}

}

catch (Exception ex)

{

if (OnErrorOccured!= null)

{

OnErrorOccured(this, ex.Message);

}

}

}

 

#endregion средства для сериализации и десериализации списка примеров

 

/// <summary>

/// Возвращает список обучающих примеров.

/// </summary>

/// <returns></returns>

public List<LearnableExample> GetExamples()

{

List<LearnableExample> examples = new List<LearnableExample>();

 

foreach (var item in _items)

{

if (!item.IsUse)

{

continue;

}

 

List<AttributeValue> predictiveAttributes = new List<AttributeValue>();

AttributeValue decisionAttribute = null;

 

for (int i = 0; i < _attributeTypeSet.PredictiveAttributeTypes.Count; i ++)

{

{

predictiveAttributes.Add(new AttributeValue(_attributeTypeSet.PredictiveAttributeTypes[i], item.PredictiveAttributeValues[i]));

}

}

examples.Add(new LearnableExample(predictiveAttributes, new AttributeValue(_attributeTypeSet.DecisiveAttributeType, item.DecisiveAttributeValue)));

}

 

return examples;

}

 

/// <summary>

/// Возвращает STARSIZE.

/// </summary>

/// <returns>STARSIZE.</returns>

public int GetStarSize()

{

return numericUpDownStarSize.Value;

}

 

/// <summary>

/// Возвращает HEAPSIZE.

/// </summary>

/// <returns>HEAPSIZE.</returns>

public int GetHeapSize()

{

return numericUpDownHeapSize.Value;

}

 

/// <summary>

/// Возвращает количество проходов алгоритма.

/// </summary>

/// <returns>Количество проходов алгоритма.</returns>

public int GetCoversCount()

{

return numericUpDownCoversCount.Value;

}

 

#region обработчики событий элемента управления dataGrid

 

private void dataGrid_InitializingNewItem(object sender, InitializingNewItemEventArgs e)

{

//for (int i = 0; i < _attributeTypeSet.PredictiveAttributeTypes.Count; i++)

//{

// _items.Last().PredictiveAttributeValues.Insert(i, string.Empty);

//}

//_items.Last().DecisiveAttributeValue = string.Empty;

 

for (int i = 0; i < _attributeTypeSet.PredictiveAttributeTypes.Count; i++)

{

_items.Last().PredictiveAttributeValues.Insert(i, _attributeTypeSet.PredictiveAttributeTypes[i].Values.First());

}

_items.Last().DecisiveAttributeValue = _attributeTypeSet.DecisiveAttributeType.Values.First();

 

}

 

private void dataGrid_GotFocus(object sender, RoutedEventArgs e)

{

if (e.OriginalSource.GetType() == typeof(DataGridCell))

{

dataGrid.BeginEdit(e);

}

}

 

private void dataGrid_MouseDown(object sender, MouseButtonEventArgs e)

{

dataGrid.CommitEdit();

}

 

private void dataGrid_CellEditEnding(object sender, DataGridCellEditEndingEventArgs e)

{

LearningExamplesDataGridItem item = (LearningExamplesDataGridItem)e.Row.Item;

if (item.IsValid)

{

e.Row.Foreground = new SolidColorBrush(Color.FromRgb(0, 0, 0));

}

else

{

e.Row.Foreground = new SolidColorBrush(Color.FromRgb(255, 0, 0));

}

}

 

private void buttonLearn_Click(object sender, RoutedEventArgs e)

{

if (OnLearn!= null)

{

OnLearn(this, null);

}

}

 

private void numericUpDownCoversCount_OnValueChanged(object sender, int value)

{

if (OnCoversCountChanged!= null)

{

OnCoversCountChanged(this, numericUpDownCoversCount.Value);

}

}

 

#endregion обработчики событий элемента управления dataGrid

 

#region события

 

public delegate void ErrorOccuredHandler(object sender, string message);

public event ErrorOccuredHandler OnErrorOccured;

 

public delegate void FileSavedHandler(object sender, string message);

public event FileSavedHandler OnFileSaved;

 

public delegate void FileLoadedHandler(object sender, string message);

public event FileLoadedHandler OnFileLoaded;

 

public delegate void LearnHandler(object sender, EventArgs e);

public event LearnHandler OnLearn;

 

public delegate void CoversCountChangedHandler(object sender, int coversCount);

public event CoversCountChangedHandler OnCoversCountChanged;

 

#endregion события

}

}