package ca.pfv.spmf.test;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import ca.pfv.spmf.algorithms.frequentpatterns.apriori.AlgoApriori;
import ca.pfv.spmf.patterns.itemset_array_integers_with_count.Itemsets;
/**
* Example of how to use APRIORI
* algorithm from the source code.
* @author Philippe Fournier-Viger (Copyright 2008)
*/
public class MainTestApriori_saveToMemory {
public static void main(String [] arg) throws IOException{
String input = fileToPath("contextPasquier99.txt");
String output = null;
// Note : we here set the output file path to null
// because we want that the algorithm save the
// result in memory for this example.
double minsup = 0.4; // means a minsup of 2 transaction (we used a relative support)
// Applying the Apriori algorithm
AlgoApriori apriori = new AlgoApriori();
Itemsets result = apriori.runAlgorithm(minsup, input, output);
apriori.printStats();
result.printItemsets(apriori.getDatabaseSize());
}
public static String fileToPath(String filename) throws UnsupportedEncodingException{
URL url = MainTestApriori_saveToMemory.class.getResource(filename);
return java.net.URLDecoder.decode(url.getPath(),"UTF-8");
}
}