}
private boolean checkNewBaseData(DataBag data, Map<LOLoad, DataBag> newBaseData, Set<Tuple> loadData) throws FrontendException {
List<Pair<Tuple, Double>> sortedBase = new LinkedList<Pair<Tuple, Double>>();
DataBag oldData = BagFactory.getInstance().newDefaultBag();
oldData.addAll(data);
double tmpCompleteness = completeness;
for (Tuple t : loadData) {
data.add(t);
// obtain the derived data
Map<Operator, DataBag> derivedData;