public static void Test_Arff_CountFrequency()
{
string tmp = "";
MessageBox.Show("Use Weather Nominal.arff");
using (OpenFileDialog newOFD=new OpenFileDialog())
{
if (newOFD.ShowDialog() == DialogResult.OK)
{
tmp = newOFD.FileName;
}
}
Arff tmp2 = new Arff(File.ReadAllText(tmp));
Condition c1 = new Condition("outlook", "overcast");
//Condition c2 = new Condition("temperature", "hot");
//Condition c3 = new Condition("humidity", "high");
List<Condition> c = new List<Condition>(); c.Add(c1);
//c.Add(c2);
//c.Add(c3);
int count=tmp2.CountFrequency(new Item(c, 0));
MessageBox.Show(string.Format("{0} appears {1} times",
c1.ToString(), count));
}
public FPTree(Arff source, int minimumCoverage, int maximumItemSetSize, double minimumAccuracy, int resultSize)
{
//load input
Source = source;
MinimumCoverage = minimumCoverage;
MaximumItemSetSize = maximumItemSetSize;
MinimumAccuracy = minimumAccuracy;
ResultSize = resultSize;
//initiate Root
Root = new FPTreeNode();
//local variables
ItemSet ItemSet;
ItemSet HighFrequencyOneItemSet;
FPTreeTable FPTreeTable;
//get the size 1 ItemSet
ItemSet = new ItemSet(Source);
//initiate High Frequency 1-item set
HighFrequencyOneItemSet = ItemSet.DeepCopy();
HighFrequencyOneItemSet.MeetMinimumCoverage(MinimumCoverage);
HighFrequencyOneItemSet.OrderByFrequencyDescending();
//initiate FPTreeTable
FPTreeTable = new FPTreeTable(Source, HighFrequencyOneItemSet);
//build FPTree
BuildFPTreeFromRoot(FPTreeTable);
}
public static void Test_ItemSet_ItemSetConstructor()
{
string tmp = "";
using (OpenFileDialog newOFD = new OpenFileDialog())
{
if (newOFD.ShowDialog() == DialogResult.OK)
{
tmp = newOFD.FileName;
}
}
Arff tmp2 = new Arff(File.ReadAllText(tmp));
ItemSet tmp3 = new ItemSet(tmp2);
}
public static void Test_FPTree_Constructor()
{
string path = "";
using (OpenFileDialog newOFD = new OpenFileDialog())
{
if (newOFD.ShowDialog() == DialogResult.OK)
{
path = newOFD.FileName;
}
}
Arff source = new Arff(File.ReadAllText(path));
FPTree FPTree = new FPTree(source, 6, 0, 0, 0);
}
public ItemSet(Arff source)
{
Source = source;
Items = new List<Item>();
foreach (var attribute in source.Attributes)
{
var valueList = attribute.Data.Select(i => i.Value).OrderBy(i=>i).GroupBy(i=>i);
foreach (var value in valueList)
{
Items.Add(new Item(new Condition(attribute.AttributeName, value.Key).ToList(), -1));
}
}
UpdateItemsFrequency();
}
public static void Test_ItemSet_MeetMinimumCoverage()
{
string tmp = "";
using (OpenFileDialog newOFD = new OpenFileDialog())
{
if (newOFD.ShowDialog() == DialogResult.OK)
{
tmp = newOFD.FileName;
}
}
Arff tmp2 = new Arff(File.ReadAllText(tmp));
ItemSet tmp3 = new ItemSet(tmp2);
tmp3.MeetMinimumCoverage(6);
tmp3.OrderByFrequencyDescending();
}
public FPTreeTable(Arff source, ItemSet itemSet)
{
if (itemSet.Size() == 1)
{
Records = new List<FPTreeTableRecord>();
for (int i = 0; i < source.Count(); i++)
{
//for every record
FPTreeTableRecord Record = new FPTreeTableRecord();
foreach (var item in itemSet.Items)
{
if (source.RecordContains(i, item))
{
Record.Add(new FPTreeTableRecordItem(item));
}
}
if (Record.Count() != 0) { Records.Add(Record); }
}
}
else
{ throw new Exception("Error creating FPTreeTable: invalid itemset, only 1-item itemset allowed"); }
}