@Override
public void reduce(Lloyds mr) {
for (int clu = 0; clu < _k; clu++) {
long ra = _size[clu];
long rb = mr._size[clu];
double[] ma = _cMeans[clu];
double[] mb = mr._cMeans[clu];
for (int c = 0; c < ma.length; c++) // Recursive mean
if (ra + rb > 0) ma[c] = (ma[c] * ra + mb[c] * rb) / (ra + rb);
}
ArrayUtils.add(_cats, mr._cats);
ArrayUtils.add(_cSqr, mr._cSqr);
ArrayUtils.add(_size, mr._size);
// track global worst-row
if (_worst_err < mr._worst_err) {
_worst_err = mr._worst_err;
_worst_row = mr._worst_row;
}
}
@Override
public void reduce(CoxPHTask that) {
n += that.n;
sumWeights += that.sumWeights;
ArrayUtils.add(sumWeightedCatX, that.sumWeightedCatX);
ArrayUtils.add(sumWeightedNumX, that.sumWeightedNumX);
ArrayUtils.add(sizeRiskSet, that.sizeRiskSet);
ArrayUtils.add(sizeCensored, that.sizeCensored);
ArrayUtils.add(sizeEvents, that.sizeEvents);
ArrayUtils.add(countEvents, that.countEvents);
ArrayUtils.add(sumXEvents, that.sumXEvents);
ArrayUtils.add(sumRiskEvents, that.sumRiskEvents);
ArrayUtils.add(sumXRiskEvents, that.sumXRiskEvents);
ArrayUtils.add(sumXXRiskEvents, that.sumXXRiskEvents);
ArrayUtils.add(sumLogRiskEvents, that.sumLogRiskEvents);
ArrayUtils.add(rcumsumRisk, that.rcumsumRisk);
ArrayUtils.add(rcumsumXRisk, that.rcumsumXRisk);
ArrayUtils.add(rcumsumXXRisk, that.rcumsumXXRisk);
}
