AggregatorImpls.AggregableVariance (datavec-api 1.0.0-M2.1 API)

java.lang.Object
- org.datavec.api.transform.ops.AggregatorImpls.AggregableVariance<T>

All Implemented Interfaces:

Serializable, IAggregableReduceOp<T,Writable>, Consumer<T>, Supplier<Writable>

Direct Known Subclasses:

AggregatorImpls.AggregablePopulationVariance

Enclosing class:

AggregatorImpls
```
public static class AggregatorImpls.AggregableVariance<T extends Number>
extends Object
implements IAggregableReduceOp<T,Writable>
```
This class offers an aggregable reduce operation for the unbiased variance, i.e. the estimator of the arithmetic mean of squared differences to the mean, corrected with Bessel's correction. See https://en.wikipedia.org/wiki/Unbiased_estimation_of_standard_deviation This is computed with Welford's method for increased numerical stability & aggregability.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

AggregableVariance()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`accept(T n)`
`<U extends IAggregableReduceOp<T,Writable>> void`	`combine(U acc)`
`Writable`	`get()`

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - AggregableVariance
```
public AggregableVariance()
```
- Method Detail
  - accept
```
public void accept(T n)
```
    Specified by:
    
    accept in interface Consumer<T extends Number>
  - combine
```
public <U extends IAggregableReduceOp<T,Writable>> void combine(U acc)
```
    Specified by:
    
    combine in interface IAggregableReduceOp<T extends Number,Writable>
  - get
```
public Writable get()
```
    Specified by:
    
    get in interface Supplier<T extends Number>