public List <AssociationItem> BestItems(List <string> words)
{
Apriori apriori = new Apriori();
AssociationRules associtionRules = new AssociationRules();
List <Item> items = apriori.BuildStartItems(transactions);
var result = apriori.CalcuateApriori(transactions);
Dictionary <int, List <Item> > lresultDictionary = BuildLResultItems(apriori.LResultLists);
var wordItem = BuildItem(words);
var wordsLength = wordItem.ItemKeys.Count;
if (lresultDictionary.ContainsKey(wordsLength))
{
List <Item> lresultItemList = lresultDictionary[wordsLength];
Item foundItem = FindItem(wordItem, lresultItemList);
if (foundItem != null)
{
List <Item> foundItems = new List <Item>()
{
foundItem
};
return(associtionRules.CalcuateAssoctionRules(foundItems, items, transactions));
}
}
return(null);
}
public void ProcessTransactionTest()
{
//Arrange
IApriori target = new Apriori();
//Act
Output actual = target.ProcessTransaction(_minSupport, _minConfidence, _items, _transactions);
//Assert
Assert.AreEqual(9, actual.FrequentItems.Count);
Assert.AreEqual(2, actual.FrequentItems["a"].Support);
Assert.AreEqual(3, actual.FrequentItems["b"].Support);
Assert.AreEqual(3, actual.FrequentItems["c"].Support);
Assert.AreEqual(3, actual.FrequentItems["e"].Support);
Assert.AreEqual(2, actual.FrequentItems["ac"].Support);
Assert.AreEqual(2, actual.FrequentItems["bc"].Support);
Assert.AreEqual(3, actual.FrequentItems["be"].Support);
Assert.AreEqual(2, actual.FrequentItems["ce"].Support);
Assert.AreEqual(2, actual.FrequentItems["bce"].Support);
Assert.AreEqual(2, actual.MaximalItemSets.Count);
Assert.AreEqual("ac", actual.MaximalItemSets[0]);
Assert.AreEqual("bce", actual.MaximalItemSets[1]);
Assert.AreEqual(5, actual.StrongRules.Count);
}
public void SolveTest()
{
//Arrange
IApriori target = new Apriori();
//Act
Output actual = target.Solve(minSupport, minConfidence, items, transactions);
//Assert
Assert.AreEqual(9, actual.FrequentItems.Count);
Assert.AreEqual(2, actual.FrequentItems["a"].Support);
Assert.AreEqual(3, actual.FrequentItems["b"].Support);
Assert.AreEqual(3, actual.FrequentItems["c"].Support);
Assert.AreEqual(3, actual.FrequentItems["e"].Support);
Assert.AreEqual(2, actual.FrequentItems["ac"].Support);
Assert.AreEqual(2, actual.FrequentItems["bc"].Support);
Assert.AreEqual(3, actual.FrequentItems["be"].Support);
Assert.AreEqual(2, actual.FrequentItems["ce"].Support);
Assert.AreEqual(2, actual.FrequentItems["bce"].Support);
Assert.AreEqual(4, actual.ClosedItemSets.Count, "ClosedItemSets calculation is wrong");
Assert.IsTrue(actual.ClosedItemSets.ContainsKey("c"));
Assert.IsTrue(actual.ClosedItemSets.ContainsKey("be"));
Assert.IsTrue(actual.ClosedItemSets.ContainsKey("ac"));
Assert.IsTrue(actual.ClosedItemSets.ContainsKey("bce"));
Assert.AreEqual(2, actual.MaximalItemSets.Count);
Assert.AreEqual("ac", actual.MaximalItemSets[0]);
Assert.AreEqual("bce", actual.MaximalItemSets[1]);
Assert.AreEqual(5, actual.StrongRules.Count);
}
private void btn_Solve_Click(object sender, EventArgs e)
{
#region validation
if (!ValidateInput(txt_Support, true) || !ValidateInput(txt_Confidence, true))
{
return;
}
if (lv_Transactions.Items.Count <= 0)
{
MessageBox.Show("Enter Transactions first", "Apriori", MessageBoxButtons.OK, MessageBoxIcon.Warning);
return;
}
#endregion
IApriori Apriori = new Apriori();
double minSupport = double.Parse(txt_Support.Text) / 100;
double minConfidence = double.Parse(txt_Confidence.Text) / 100;
IEnumerable<string> Items = GetItems();
var ourput = Apriori.Solve(minSupport, minConfidence, Items, transactions);
frmOutput objfrmOutput = new frmOutput(ourput);
objfrmOutput.ShowDialog();
}