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Statistical parsing of English sentences

, 13 Dec 2006
Shows how to generate parse trees for English language sentences, using a C# port of OpenNLP, a statistical natural language parsing library.
englishparsing_bin.zip
Lithium.dll
ModelConverter.exe
OpenNLP Tools.chm
OpenNLP.dll
ParseTree.exe
SharpEntropy.dll
ToolsExample.exe
englishparsing_net2_0_bin.zip
ToolsExample.exe
Lithium.dll
ModelConverter.exe
OpenNLP Tools.chm
OpenNLP.dll
ParseTree.exe
SharpEntropy.dll
englishparsing_net2_0_src.zip
Lithium
Collections
Delegates
Enums
Interfaces
IO
Lithium.csproj.vspscc
LithiumControl.bmp
Shapes
UI
Visitors
ModelConverter
App.ico
ModelConverter.csproj.vspscc
ParseTree
App.ico
ParseTree.csproj.vspscc
ToolsExample
App.ico
ToolsExample.csproj.vspscc
OpenNLP
OpenNLP.csproj.vspscc
SharpEntropy.dll
Tools
Chunker
NameFind
Parser
PosTagger
SentenceDetect
Tokenize
Util
englishparsing_src.zip
Lithium.csproj.user
LithiumControl.bmp
App.ico
ModelConverter.csproj.user
OpenNLP.csproj.user
SharpEntropy.dll
vssver.scc
vssver.scc
vssver.scc
vssver.scc
vssver.scc
vssver.scc
vssver.scc
App.ico
ParseTree.csproj.user
App.ico
ToolsExample.csproj.user
using System;
using System.Drawing;
using System.ComponentModel;
namespace Netron.Lithium
{
	/// <summary>
	/// Abstract base class for every object part of the diagram
	/// </summary>
	public abstract class Entity
	{
		#region Fields
		/// <summary>
		/// tells whether the current entity is hovered by the mouse
		/// </summary>
		protected internal bool hovered = false;
		/// <summary>
		/// the control to which the eneity belongs
		/// </summary>
		protected internal LithiumControl site;
		/// <summary>
		/// tells whether the entity is selected
		/// </summary>
		protected bool isSelected = false;

		/// <summary>
		/// Default font for drawing text
		/// </summary>
		protected Font font = new Font("Verdana", 10F);

		/// <summary>
		/// Default black pen
		/// </summary>
		protected Pen blackPen = new Pen(Brushes.Black,1f);

		/// <summary>
		/// a red pen
		/// </summary>
		protected Pen  redPen = new Pen(Brushes.Red,2f);

		/// <summary>
		/// a thicker version of the black pen
		/// </summary>
		protected Pen thickPen = new Pen(Color.Black, 1.7f);
		/// <summary>
		/// the unique identifier
		/// </summary>
		protected Guid uid;

		/// <summary>
		/// whatever pen you use instead of the black one
		/// </summary>
		protected Pen pen;

		/// <summary>
		/// the visibility bit
		/// </summary>
		protected internal bool visible = false;
		#endregion

		#region Properties
		/// <summary>
		/// Gets or sets whether the entity is selected
		/// </summary>
		[Browsable(false)]
		public bool IsSelected
		{
			get{return isSelected;}
			set{isSelected = value;}
		}
		/// <summary>
		/// Gets or sets the site of the entity
		/// </summary>
		[Browsable(false)]
		public LithiumControl Site
		{
			get{return site;}
			set{site = value;}
		}

		/// <summary>
		/// The globally unique identifier of the entity.
		/// Mostly useful for serialization.
		/// </summary>
		[Browsable(false), GraphData]
		public Guid UID
		{
			get{return uid;}
			set{uid = value;}
		}
		

		/// <summary>
		/// The font used for drawing the text (if any)
		/// </summary>
		[Browsable(false)]
		public Font Font
		{
			get{return font;}
			set{font =value;}
		}
		#endregion

		#region Constructor
		/// <summary>
		/// Default ctor
		/// </summary>
		public Entity()
		{			
			this.uid = Guid.NewGuid();
		}

		/// <summary>
		/// Ctor with the site of the entity
		/// </summary>
		/// <param name="site"></param>
		public Entity(LithiumControl site):this()
		{
			this.site = site;
		}

		
		#endregion

		#region Methods
		/// <summary>
		/// Paints the entity on the control
		/// </summary>
		/// <param name="g">the graphics object to paint on</param>
		public abstract void Paint(Graphics g);
		/// <summary>
		/// Tests whether the shape is hit by the mouse
		/// </summary>
		/// <param name="p"></param>
		/// <returns></returns>
		public abstract bool Hit(Point p);
		/// <summary>
		/// Invalidates the entity
		/// </summary>
		public abstract void Invalidate();
		/// <summary>
		/// Moves the entity on the canvas
		/// </summary>
		/// <param name="p">the shifting vector, not an absolute position!</param>
		public abstract void Move(Point p);

		#endregion
	}
}

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About the Author

Richard Northedge
Web Developer
United Kingdom United Kingdom
Richard Northedge is a senior developer with a UK Microsoft Gold Partner company. He has a postgraduate degree in English Literature, has been programming professionally since 1998 and has been an MCSD since 2000.

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