VarianceCollector (RDF4J: Query algebra - evaluation 4.3.6 API)

java.lang.Object
- org.eclipse.rdf4j.query.algebra.evaluation.function.aggregate.StatisticCollector
- - org.eclipse.rdf4j.query.algebra.evaluation.function.aggregate.variance.VarianceCollector

All Implemented Interfaces:

org.eclipse.rdf4j.query.parser.sparql.aggregate.AggregateCollector
```
@Experimental
public class VarianceCollector
extends StatisticCollector
```
AggregateCollector that can compute both sample and population variance based on input of numeric Literals.

Author:

Tomas Kovachev t.kovachev1996@gmail.com

- Field Summary
  - Fields inherited from class org.eclipse.rdf4j.query.algebra.evaluation.function.aggregate.StatisticCollector
    population, statistics, typeError, ZERO
- Constructor Summary
  
  Constructors
  Constructor Description
  
  VarianceCollector(boolean population)
- Method Summary
  
  All Methods Instance Methods Concrete Methods
  Modifier and Type Method Description
  
  protected org.eclipse.rdf4j.model.Literal computeValue()
  - Methods inherited from class org.eclipse.rdf4j.query.algebra.evaluation.function.aggregate.StatisticCollector
    addValue, getFinalValue, hasError, setTypeError
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - VarianceCollector
```
public VarianceCollector(boolean population)
```
- Method Detail
  - computeValue
```
protected org.eclipse.rdf4j.model.Literal computeValue()
```
    Specified by:
    
    computeValue in class StatisticCollector