Output IApriori.ProcessTransaction(double minSupport, double minConfidence, IEnumerable<string> items, string[][] transactions, string[] itemsD = null)
{
IList<Item> frequentItems = GetL1FrequentItems(minSupport, items, transactions);
ItemsDictionary allFrequentItems = new ItemsDictionary();
allFrequentItems.ConcatItems(frequentItems);
var candidates = new Dictionary<string[], double>();
double transactionsCount = transactions.Count();
do
{
candidates = GenerateCandidates(frequentItems, transactions, itemsD);
frequentItems = GetFrequentItems(candidates, minSupport, transactionsCount);
allFrequentItems.ConcatItems(frequentItems);
} while (candidates.Count != 0);
HashSet<Rule> rules = GenerateRules(allFrequentItems);
IList<Rule> strongRules = GetStrongRules(minConfidence, rules, allFrequentItems);
//Dictionary<string, Dictionary<string, double>> closedItemSets = GetClosedItemSets(allFrequentItems);
// IList<string> maximalItemSets = GetMaximalItemSets(closedItemSets);
return new Output
{
StrongRules = strongRules,
MaximalItemSets = null,
ClosedItemSets = null,
FrequentItems = allFrequentItems
};
}
Output IApriori.ProcessTransaction(double minSupport, double minConfidence, IEnumerable<string> items, string[] transactions)
{
IList<Item> frequentItems = GetL1FrequentItems(minSupport, items, transactions);
ItemsDictionary allFrequentItems = new ItemsDictionary();
allFrequentItems.ConcatItems(frequentItems);
IDictionary<string, double> candidates = new Dictionary<string, double>();
double transactionsCount = transactions.Count();
do
{
candidates = GenerateCandidates(frequentItems, transactions);
frequentItems = GetFrequentItems(candidates, minSupport, transactionsCount);
allFrequentItems.ConcatItems(frequentItems);
}
while (candidates.Count != 0);
HashSet<Rule> rules = GenerateRules(allFrequentItems);
IList<Rule> strongRules = GetStrongRules(minConfidence, rules, allFrequentItems);
Dictionary<string, Dictionary<string, double>> closedItemSets = GetClosedItemSets(allFrequentItems);
IList<string> maximalItemSets = GetMaximalItemSets(closedItemSets);
return new Output
{
StrongRules = strongRules,
MaximalItemSets = maximalItemSets,
ClosedItemSets = closedItemSets,
FrequentItems = allFrequentItems
};
}
Output IApriori.ProcessTransaction(float minSupport, float minConfidence, float minLift, IEnumerable <string> items, string[][] transactions, string[] itemsD = null)
{
this.minSupport = minSupport;
this.minConfidence = minConfidence;
this.transactionsCount = transactions.Length;
this.minLift = minLift;
IList <Item> frequentItems = GetL1FrequentItems(items, transactions);
ItemsDictionary allFrequentItems = new ItemsDictionary();
allFrequentItems.ConcatItems(frequentItems);
var candidates = new Dictionary <string[], double>();
double transactionsCount = transactions.Count();
do
{
candidates = GenerateCandidates(frequentItems, transactions, itemsD);
frequentItems = GetFrequentItems(candidates, transactionsCount);
allFrequentItems.ConcatItems(frequentItems);
} while (candidates.Count != 0);
HashSet <Rule> rules = GenerateRules(allFrequentItems);
IList <Rule> strongRules = GetStrongRules(minConfidence, rules, allFrequentItems);
return(new Output
{
StrongRules = strongRules,
FrequentItems = allFrequentItems
});
}
public Output ProcessTransaction(double minSupport, double minConfidence, IEnumerable <string> items, string[] transactions)
{
Console.WriteLine("Computing frequentItems");
var frequentItems = GetFirstListOfFrequentItems(minSupport, items, transactions);
var allFrequentItems = new ItemsDictionary();
allFrequentItems.ConcatItems(frequentItems);
IDictionary <string, double> candidates;
double transactionsCount = transactions.Length;
do
{
candidates = GenerateCandidates(frequentItems, transactions);
Console.WriteLine(candidates.Count + " candidates.");
frequentItems = GetFrequentItems(candidates, minSupport, transactionsCount);
allFrequentItems.ConcatItems(frequentItems);
}while (candidates.Count != 0);
Console.WriteLine("Computing output:...");
return(ComputeOutput(minConfidence, allFrequentItems));
}
