Method Add

library/cpp/linear_regression/welford.cpp:9–14

}

void TMeanCalculator::Add(const double value, const double weight /*= 1.*/) {
    SumWeights += weight;
    if (SumWeights.Get()) {
        Mean += weight * (value - Mean) / SumWeights.Get();
    }
}

void TMeanCalculator::Remove(const double value, const double weight /*= 1.*/) {
    SumWeights -= weight;