static void addTransactions()
{
// int lineNum = 0;
string line;
using (StreamReader sr = new StreamReader("data/topic-1.txt"))
{
while ((line = sr.ReadLine()) != null)
{
List<string> data = line.Split(' ').ToList();
ItemSet set = new ItemSet();
foreach (string d in data)
{
if (!d.Equals(""))
{
Item it = new Item(d);
set.add(it);
}
}
set.sort();
transactions.Add(set);
// lineNum++;
}
}
}
static List <ItemSet> join(List <ItemSet> itemsets)
{
List <ItemSet> newcandidateItemsets = new List <ItemSet>();
for (int i = 0; i < itemsets.Count() - 1; i++)
{
ItemSet itemset1 = itemsets[i];
for (int j = i + 1; j < itemsets.Count(); j++)
{
ItemSet itemset2 = itemsets[j];
itemset2.sort();
ItemSet newcandidate = NewCandidateItemSet(itemset1, itemset2);
newcandidate.sort();
if (newcandidate.Count() != 0)
{
newcandidate.support = GetSupport(newcandidate);
newcandidateItemsets.Add(newcandidate);
}
}
}
return(newcandidateItemsets);
//foreach item[i] in itemsets to itemsets.length-1
//get item[i]
//sort item[i].key
//foreach item[j=1+1] in itemsets to itemsets
//get item[j]
//generate new candidate/itemset with item[i] and item[j]
//if the candidate is not empty
//get and add min support
//add to candidates itemsets
//setmy itemsets to candidates itemset
//clear candidates itemsets
}
static ItemSet NewCandidateItemSet(ItemSet i1, ItemSet i2)
{
ItemSet newItemSet = new ItemSet();
i1.clone(newItemSet);
int length = i1.items.Count();
if (length == 1)
{
newItemSet.items.AddRange(i2.items);
return(newItemSet);
}
else
{
ItemSet firstSubString = new ItemSet();
ItemSet secondSubString = new ItemSet();
firstSubString.items = i1.items.GetRange(0, length - 1);
secondSubString.items = i2.items.GetRange(0, length - 1);
firstSubString.sort();
secondSubString.sort();
if (firstSubString.stringRepresentation().Equals(secondSubString.stringRepresentation()))
{
newItemSet.items.Add(i2.items[length - 1]);
return(newItemSet);
}
ItemSet empt = new ItemSet();
return(empt);
}
}
static void addTransactions()
{
// int lineNum = 0;
string line;
using (StreamReader sr = new StreamReader("data/topic-1.txt"))
{
while ((line = sr.ReadLine()) != null)
{
List <string> data = line.Split(' ').ToList();
ItemSet set = new ItemSet();
foreach (string d in data)
{
if (!d.Equals(""))
{
Item it = new Item(d);
set.add(it);
}
}
set.sort();
transactions.Add(set);
// lineNum++;
}
}
}
static ItemSet NewCandidateItemSet(ItemSet i1, ItemSet i2)
{
ItemSet newItemSet = new ItemSet();
i1.clone(newItemSet);
int length = i1.items.Count();
if (length == 1)
{
newItemSet.items.AddRange(i2.items);
return newItemSet;
}
else
{
ItemSet firstSubString = new ItemSet();
ItemSet secondSubString = new ItemSet();
firstSubString.items = i1.items.GetRange(0, length - 1);
secondSubString.items = i2.items.GetRange(0, length - 1);
firstSubString.sort();
secondSubString.sort();
if (firstSubString.stringRepresentation().Equals(secondSubString.stringRepresentation()))
{
newItemSet.items.Add(i2.items[length - 1]);
return newItemSet;
}
ItemSet empt = new ItemSet();
return empt;
}
}