protected AbstractCluster(Vector center2, Vector radius2, int id2) {
setNumObservations(0);
setTotalObservations(0);
setCenter(new RandomAccessSparseVector(center2));
setRadius(new RandomAccessSparseVector(radius2));
setS0(0);
setS1(center.like());
setS2(center.like());
this.id = id2;
}
@Override
public void computeParameters() {
if (getS0() == 0) {
return;
}
setNumObservations((long) getS0());
setTotalObservations(getTotalObservations() + getNumObservations());
setCenter(getS1().divide(getS0()));
// compute the component stds
if (getS0() > 1) {
setRadius(
getS2()
.times(getS0())
.minus(getS1().times(getS1()))
.assign(new SquareRootFunction())
.divide(getS0()));
}
setS0(0);
setS1(center.like());
setS2(center.like());
}