org.apache.giraph.aggregators.matrix.dense

Class DoubleDenseVectorSumAggregator

java.lang.Object

org.apache.giraph.aggregators.BasicAggregator<DoubleDenseVector>

org.apache.giraph.aggregators.matrix.dense.DoubleDenseVectorSumAggregator

All Implemented Interfaces:

Aggregator<DoubleDenseVector>

public class DoubleDenseVectorSumAggregator
extends BasicAggregator<DoubleDenseVector>

The double dense vector aggregator is used to aggregate double dense vectors.

Constructor Summary

Constructors

Constructor and Description
DoubleDenseVectorSumAggregator()

Method Summary

Modifier and Type	Method and Description
void	aggregate(DoubleDenseVector vector) Add a new value.
DoubleDenseVector	createInitialValue() Return new aggregated value which is neutral to aggregate operation.

Methods inherited from class org.apache.giraph.aggregators.BasicAggregator

getAggregatedValue, reset, setAggregatedValue

Methods inherited from class java.lang.Object

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

Constructor Detail

DoubleDenseVectorSumAggregator

public DoubleDenseVectorSumAggregator()

Method Detail

createInitialValue

public DoubleDenseVector createInitialValue()

Description copied from interface: Aggregator

Return new aggregated value which is neutral to aggregate operation. Must be changeable without affecting internals of Aggregator

Returns:

Neutral value

aggregate

public void aggregate(DoubleDenseVector vector)

Description copied from interface: Aggregator

Add a new value. Needs to be commutative and associative

Parameters:

vector - Value to be aggregated.