org.datavec.api.transform.ops

Class AggregatorImpls.AggregablePopulationVariance<T extends Number>

java.lang.Object

org.datavec.api.transform.ops.AggregatorImpls.AggregableVariance<T>

org.datavec.api.transform.ops.AggregatorImpls.AggregablePopulationVariance<T>

All Implemented Interfaces:

Serializable, java.util.function.Consumer<T>, java.util.function.Supplier<Writable>, IAggregableReduceOp<T,Writable>

Enclosing class:

AggregatorImpls

public static class AggregatorImpls.AggregablePopulationVariance<T extends Number>
extends AggregatorImpls.AggregableVariance<T>

This class offers an aggregable reduce operation for the population variance, i.e. the uncorrected estimator of the arithmetic mean of squared differences to the mean. See https://en.wikipedia.org/wiki/Variance#Population_variance_and_sample_variance This is computed with Welford's method for increased numerical stability & aggregability.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AggregablePopulationVariance()

Method Summary

Modifier and Type	Method and Description
Writable	get()

Methods inherited from class org.datavec.api.transform.ops.AggregatorImpls.AggregableVariance

accept, combine

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.function.Consumer

andThen

Constructor Detail

AggregablePopulationVariance

public AggregablePopulationVariance()

Method Detail

get

public Writable get()

Specified by:

get in interface java.util.function.Supplier<Writable>

Overrides:

get in class AggregatorImpls.AggregableVariance<T extends Number>