public Distribution<T> merge(Distribution<T> current, Distribution<T> newBit) {
// ToDo iterare sull indice piu corto
DiscreteProbabilityDistribution<T> currentDD = (DiscreteProbabilityDistribution<T>) current;
DiscreteProbabilityDistribution<T> newBitDD = (DiscreteProbabilityDistribution<T>) newBit;
Map<T, Degree> map = new HashMap<T, Degree>();
Degree denominator = null;
int i = 0;
for (Iterator<T> currIt = currentDD.getSupport().iterator(); currIt.hasNext(); ) {
T tempT = currIt.next();
if (newBitDD.getDistribution().containsKey(tempT)) {
if (i == 0) {
denominator = newBitDD.getDegree(tempT).mul(current.getDegree(tempT));
i++;
} else
denominator = denominator.sum(newBitDD.getDegree(tempT).mul(current.getDegree(tempT)));
}
}
for (Iterator<T> currIt = currentDD.getSupport().iterator(); currIt.hasNext(); ) {
T tempT = currIt.next();
if (newBitDD.getDistribution().containsKey(tempT)) {
Degree temp = (newBitDD.getDegree(tempT).mul(current.getDegree(tempT))).div(denominator);
map.put(tempT, temp);
}
}
currentDD.getDistribution().clear();
currentDD.getDistribution().putAll(map);
return currentDD;
}
public Distribution<T> mergeAsNew(Distribution<T> current, Distribution<T> newBit) {
DiscreteProbabilityDistribution<T> currentDD = (DiscreteProbabilityDistribution<T>) current;
DiscreteProbabilityDistribution<T> newBitDD = (DiscreteProbabilityDistribution<T>) newBit;
DiscreteDistribution<T> ret = new DiscreteDistribution<T>();
Degree denominator = null;
int i = 0;
if (newBitDD.getSupport().size() < currentDD.getSupport().size()) {
for (Iterator<T> newBitIt = newBitDD.getSupport().iterator(); newBitIt.hasNext(); ) {
T tempT = newBitIt.next();
if (currentDD.getDistribution().containsKey(tempT)) {
if (i == 0) {
denominator = currentDD.getDegree(tempT).mul(newBit.getDegree(tempT));
i++;
} else
denominator = denominator.sum(currentDD.getDegree(tempT).mul(newBit.getDegree(tempT)));
}
}
for (Iterator<T> newBitIt = newBitDD.getSupport().iterator(); newBitIt.hasNext(); ) {
T tempT = newBitIt.next();
if (currentDD.getDistribution().containsKey(tempT)) {
Degree temp = (currentDD.getDegree(tempT).mul(newBit.getDegree(tempT))).div(denominator);
ret.put(tempT, temp);
}
}
} else {
i = 0;
for (Iterator<T> currIt = currentDD.getSupport().iterator(); currIt.hasNext(); ) {
T tempT = currIt.next();
if (newBitDD.getDistribution().containsKey(tempT)) {
if (i == 0) {
denominator = newBitDD.getDegree(tempT).mul(current.getDegree(tempT));
i++;
} else
denominator = denominator.sum(newBitDD.getDegree(tempT).mul(current.getDegree(tempT)));
}
}
for (Iterator<T> currIt = currentDD.getSupport().iterator(); currIt.hasNext(); ) {
T tempT = currIt.next();
if (newBitDD.getDistribution().containsKey(tempT)) {
Degree temp = (newBitDD.getDegree(tempT).mul(current.getDegree(tempT))).div(denominator);
ret.put(tempT, temp);
}
}
}
return ret;
}