package ca.pfv.spmf.test;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import ca.pfv.spmf.algorithms.frequentpatterns.aprioriTIDClose.AlgoAprioriTIDClose;
import ca.pfv.spmf.input.transaction_database_list_integers.TransactionDatabase;
import ca.pfv.spmf.patterns.itemset_array_integers_with_tids.Itemsets;
/**
* Example of how to use the AprioriTIDClose algorithm, from the
* source code.
* @author Philippe Fournier-Viger (Copyright 2008)
*/
public class MainTestAprioriTIDClose {
public static void main(String [] arg) throws IOException{
long startTime = System.currentTimeMillis();
// Loading the binary context
TransactionDatabase database = new TransactionDatabase();
try {
database.loadFile(fileToPath("contextPasquier99.txt"));
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
// database.printDatabase();
// Applying the APRIORI-CLOSE algorithm
AlgoAprioriTIDClose apriori2 = new AlgoAprioriTIDClose();
// We pass null as output file path, because we want to keep
// the result into memory instead.
Itemsets frequents = apriori2.runAlgorithm(database, 0.4, null);
long endTime = System.currentTimeMillis();
// print the frequent itemsets found
frequents.printItemsets(database.size());
// print the frequent closed itemsets found
apriori2.getFrequentClosed().printItemsets(database.size());
apriori2.printStats();
System.out.println("total Time : " + (endTime - startTime) + "ms");
}
public static String fileToPath(String filename) throws UnsupportedEncodingException{
URL url = MainTestAprioriTIDClose.class.getResource(filename);
return java.net.URLDecoder.decode(url.getPath(),"UTF-8");
}
}