package ca.pfv.spmf.test;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.URL;
import java.util.List;
import ca.pfv.spmf.algorithms.sequentialpatterns.BIDE_and_prefixspan.AlgoFEAT;
import ca.pfv.spmf.algorithms.sequentialpatterns.BIDE_and_prefixspan.SequentialPattern;
import ca.pfv.spmf.input.sequence_database_list_integers.SequenceDatabase;
/**
* Example of how to use the FEAT algorithm in source code.
* @author Philippe Fournier-Viger
*/
public class MainTestFEAT_saveToMemory {
public static void main(String [] arg) throws IOException{
// Load a sequence database
SequenceDatabase sequenceDatabase = new SequenceDatabase();
sequenceDatabase.loadFile(fileToPath("contextPrefixSpan.txt"));
// print the database to console
sequenceDatabase.print();
// Create an instance of the algorithm
AlgoFEAT algo = new AlgoFEAT();
// algo.setMaximumPatternLength(3);
// execute the algorithm with minsup = 50 %
List<SequentialPattern> patterns = algo.runAlgorithm(sequenceDatabase, 0.4);
algo.printStatistics(sequenceDatabase.size());
System.out.println(" == PATTERNS ==");
for(SequentialPattern pattern : patterns){
System.out.print(pattern + " support : " + pattern.getAbsoluteSupport() + " sequence ids:");
for(Integer sequenceID: pattern.getSequenceIDs()) {
System.out.print(" " + sequenceID);
}
System.out.println();
}
}
public static String fileToPath(String filename) throws UnsupportedEncodingException{
URL url = MainTestFEAT_saveToMemory.class.getResource(filename);
return java.net.URLDecoder.decode(url.getPath(),"UTF-8");
}
}