public Delta(FeatureFactory factory, int start, int end, Instance segmentInstance) {
for (Iterator<Feature> i = featureSet(start, end, segmentInstance).iterator();
i.hasNext(); ) {
Feature f = i.next();
// replace the feature with its canonical version, so
// that variant versions are not stored in the
// deltaWeight, zeroWeights hash tables
f = factory.getFeature(f);
double segmentWeight = segmentInstance.getWeight(f);
if (segmentWeight == 0) zeroWeights.add(f);
else {
double sumWeight = getSumWeight(start, end, f);
if (segmentWeight != sumWeight) deltaWeight.put(f, segmentWeight - sumWeight);
}
}
/*
System.out.println("segmentInstance: "+segmentInstance);
System.out.println("deltaInstance: "+new DeltaInstance(start,end,this,
segmentInstance.getSource(),
segmentInstance.getSubpopulationId()));
*/
}
private void addAll(Set<Feature> s, Iterator<Feature> i) {
while (i.hasNext()) s.add(i.next());
}
