org.conqat.lib.commons.math

Interface IAggregator

All Known Implementing Classes:

MaxAggregator, MeanAggregator, MinAggregator, PairwiseAggregatorBase, PercentileAggregator, StdDevAggregator, SumAggregator, VarianceAggregator

public interface IAggregator

Aggregtor interface.

Author:

deissenb

Method Summary

Modifier and Type	Method and Description
double	aggregate(java.util.Collection<? extends java.lang.Number> values) Aggregate collection of values to one value.
double	getNeutralElement() Get the neutral element of this aggregation operator.

Method Detail

aggregate

double aggregate(java.util.Collection<? extends java.lang.Number> values)

Aggregate collection of values to one value. Implementing classes may return non-normal numbers, e.g. Double.NaN for the median of an empty collections.

getNeutralElement

double getNeutralElement()

Get the neutral element of this aggregation operator. This may return non-normal numbers, e.g. Double.NaN or Double.POSITIVE_INFINITY .