*/
public Qrels(String file) {
DelimitedValuesFileReader iter = new DelimitedValuesFileReader(file, " ");
String[] arr;
while ((arr = iter.nextValues()) != null) {
String qno = arr[0];
String docno = arr[2];
boolean rel = arr[3].equals("0") ? false : true;
if (data.containsKey(qno)) {