public bool Compare(PieceOfData other)
{
if (Outlook == other.Outlook && Temperature == other.Temperature && Humidity == other.Humidity && Windy == other.Windy)
{
return(true);
}
else
{
return(false);
}
}
static void Main(string[] args)
{
#region DataTable
DataTable dataTable = new DataTable("PlayGolf");
dataTable.Columns.Add("Outlook");
dataTable.Columns.Add("Temperature");
dataTable.Columns.Add("Humidity");
dataTable.Columns.Add("Wind");
dataTable.Columns.Add("Play");
dataTable.Rows.Add("Sunny", "Hot", "High", "Weak", "No");
dataTable.Rows.Add("Sunny", "Hot", "High", "Strong", "No");
dataTable.Rows.Add("Overcast", "Hot", "High", "Weak", "Yes");
dataTable.Rows.Add("Rain", "Mild", "High", "Weak", "Yes");
dataTable.Rows.Add("Rain", "Cool", "Normal", "Weak", "Yes");
dataTable.Rows.Add("Rain", "Cool", "Normal", "Strong", "No");
dataTable.Rows.Add("Overcast", "Cool", "Normal", "Strong", "Yes");
dataTable.Rows.Add("Sunny", "Mild", "High", "Weak", "No");
dataTable.Rows.Add("Sunny", "Cool", "Normal", "Weak", "Yes");
dataTable.Rows.Add("Rain", "Mild", "Normal", "Weak", "Yes");
dataTable.Rows.Add("Sunny", "Mild", "Normal", "Strong", "Yes");
dataTable.Rows.Add("Overcast", "Mild", "High", "Strong", "Yes");
dataTable.Rows.Add("Overcast", "Hot", "Normal", "Weak", "Yes");
dataTable.Rows.Add("Rain", "Mild", "High", "Strong", "No");
#endregion
var data = new List <PieceOfData>();
var allData = new List <PieceOfData>();
int counter = 0;
string line;
string path = @"..\..\Data\data.txt";
// Read the file and display it line by line.
System.IO.StreamReader file =
new System.IO.StreamReader(path);
while ((line = file.ReadLine()) != null)
{
var split = line.Split(',');
var newData = new PieceOfData();
for (int i = 0; i < 5; i++)
{
newData.Attributes[i] = split[i];
}
newData.Outlook = split[0];
newData.Temperature = split[1];
newData.Humidity = split[2];
newData.Windy = split[3];
newData.Play = split[4];
data.Add(newData);
counter++;
}
var dTree = new ID3(data, "Play");
var result = "";
dTree.Print(dTree, result);
Console.ReadLine();
}
public static void GenerateCombinations(List <PieceOfData> data)
{
#region COMBINATIONS
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 4; j++)
{
for (int k = 0; k < 3; k++)
{
for (int h = 0; h < 3; h++)
{
var piece = new PieceOfData();
// Outlook
if (i == 0)
{
piece.Outlook = "sunny";
}
if (i == 1)
{
piece.Outlook = "rainy";
}
if (i == 2)
{
piece.Outlook = "overcast";
}
if (i == 3)
{
piece.Outlook = "null";
}
// Temperature
if (j == 0)
{
piece.Temperature = "hot";
}
if (j == 1)
{
piece.Temperature = "mild";
}
if (j == 2)
{
piece.Temperature = "cool";
}
if (j == 3)
{
piece.Temperature = "null";
}
// Humidity
if (k == 0)
{
piece.Humidity = "high";
}
if (k == 1)
{
piece.Humidity = "normal";
}
if (k == 2)
{
piece.Humidity = "null";
}
// Windy
if (h == 0)
{
piece.Windy = "TRUE";
}
if (h == 1)
{
piece.Windy = "FALSE";
}
if (h == 2)
{
piece.Windy = "null";
}
data.Add(piece);
}
}
}
}
#endregion
/*
* var playing = new List<PieceOfData>();
* var notPlaying = new List<PieceOfData>();
* var unknown = new List<PieceOfData>();
*
*
* foreach (var d in data)
* {
* // Playing Golf
* if (d.Play == "yes")
* playing.Add(d);
* // Not Playing Golf
* if (d.Play == "no")
* notPlaying.Add(d);
* }
*
*
* var pattern = new List<PieceOfData>();
*
* foreach (var a in allComps)
* {
* foreach (var s in playing)
* {
* if (s.Compare(a))
* {
* a.Play = "yes";
* pattern.Add(a);
* }
*
* }
*
* foreach (var s in notPlaying)
* {
* if (s.Compare(a))
* {
* a.Play = "no";
* pattern.Add(a);
* }
*
* }
*
* }
*
*
*
* foreach (var p in pattern)
* {
* Console.WriteLine("{0}, {1}, {2}, {3}, {4}", p.Outlook, p.Temperature, p.Humidity, p.Windy, p.Play);
* }*/
}