public DualCompare(Dataset ds, int support)
{
int maxItem = ds.GetColumnCount();
//dualStruct = new SortedList();
dualStruct = new ISimpleItemset[maxItem, maxItem];
for (int loopA = 0; loopA < maxItem; loopA++)
{
for (int loopB = 0; loopB < maxItem; loopB++)
{
if (loopA != loopB)
{
Utils.FastSparseBitArray bitArray = ds.BuildBitVector(loopA, loopB);
int countElements = bitArray.CountElements();
if (countElements >= support)
{
ISimpleItemset itemset;
//if (ds.RowCount <= 64)
// itemset = new ShortSimpleItemset();
//else
itemset = new SimpleItemset();
//itemset.AddItem(loopA);
//itemset.AddItem(loopB);
itemset.SetTransactions(bitArray);
//itemset.support = countElements;
dualStruct[loopA, loopB] = itemset;
}
}
}
}
}
public void WriteResults(string dataFileName, Dataset dataset)
{
// Get columns
int[] columns = new int[_itemset.Count];
for (int i = 0; i < _itemset.Count; i++)
{
columns[i] = _itemset.GetItem(i);
}
// Get rows
Utils.FastSparseBitArray rowsBits = _itemset.GetTransactions();
int[] rows = new int[_itemset.support];
int rowsPos = 0;
for (int i = 0; i < dataset.RowCount; i++)
{
if (rowsBits.Get(i) == true)
{
rows[rowsPos] = i;
rowsPos++;
}
}
Dataset subMatrix = dataset.GetSubMatrix(columns, rows);
StreamWriter sw = null;
try
{
sw = new StreamWriter(dataFileName, false);
subMatrix.SaveFile(sw);
}
finally
{
if (sw != null)
{
sw.Close();
}
}
}
