public FPTree(IInputDatabaseHelper inDatabaseHelper, float minSup)
: this()
{
minimumSupport = minSup;
inputDatabaseHelper = inDatabaseHelper;
float temp = minimumSupport * inputDatabaseHelper.TotalTransactionNumber;
minimumSupportCount = (int)temp;
if (temp % 1 != 0)
{
minimumSupportCount++;
}
CalculateFrequentItems();
frequentItems = frequentItems.OrderByDescending(x => x.SupportCount).ToList();// Xong B1.1
inputDatabaseHelper.OpenDatabaseConnection();
List <string> aTransaction = new List <string>();
do
{
aTransaction = inputDatabaseHelper.GetNextTransaction();
if (aTransaction.Exists(x => x != "y" && x != "?"))
{
continue;
}
InsertTransaction(aTransaction);
}while (aTransaction.Count > 0);
inputDatabaseHelper.CloseDatabaseConnection();
}
public FPTree(IInputDatabaseHelper inDatabaseHelper, float minSup)
: this()
{
minimumSupport = minSup;
inputDatabaseHelper = inDatabaseHelper;
minimumSupportCount = (int)(minimumSupport * (float)inputDatabaseHelper.TotalTransactionNumber);
CalculateFrequentItems();
frequentItems = frequentItems.OrderByDescending(x => x.SupportCount).ToList();
inputDatabaseHelper.OpenDatabaseConnection();
List <string> aTransaction = new List <string>();
do
{
aTransaction = inputDatabaseHelper.GetNextTransaction();
InsertTransaction(aTransaction);
}while (aTransaction.Count > 0);
inputDatabaseHelper.CloseDatabaseConnection();
}