private void calculatePosteriors() {
if (mBestPosterior != null) {
return;
}
final int best = best();
if (best == -1) {
mBestPosterior = arithmetic().zero();
mNonIdentity = arithmetic().zero();
return;
}
double others = arithmetic().zero();
final int reference = mHyp.reference();
for (int i = 0; i < size(); i++) {
if (i != best && i != reference) {
others = arithmetic().add(others, measure(i));
}
}
final double refMeasure = reference == -1 ? arithmetic().zero() : measure(reference);
final double bestOther = best == reference ? others : arithmetic().add(others, refMeasure);
mBestPosterior = arithmetic().divide(measure(best), bestOther);
if (reference == -1) {
mNonIdentity = arithmetic().zero();
} else {
final double refOther = best == reference ? others : arithmetic().add(others, measure(best));
mNonIdentity = arithmetic().divide(refOther, refMeasure);
}
}
@Override
public int reference() {
return mHyp.reference();
}
