eu.stratosphere.example.java.clustering

Class KMeans.CentroidAccumulator

java.lang.Object

eu.stratosphere.api.common.functions.AbstractFunction

eu.stratosphere.api.java.functions.ReduceFunction<Tuple3<Integer,KMeans.Point,Long>>

eu.stratosphere.example.java.clustering.KMeans.CentroidAccumulator

All Implemented Interfaces:

Function, GenericReduce<Tuple3<Integer,KMeans.Point,Long>>, Serializable

Enclosing class:

KMeans

public static final class KMeans.CentroidAccumulator
extends ReduceFunction<Tuple3<Integer,KMeans.Point,Long>>

Sums and counts point coordinates.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
KMeans.CentroidAccumulator()

Method Summary

Methods

Modifier and Type	Method and Description
Tuple3<Integer,KMeans.Point,Long>	reduce(Tuple3<Integer,KMeans.Point,Long> val1, Tuple3<Integer,KMeans.Point,Long> val2)

Methods inherited from class eu.stratosphere.api.common.functions.AbstractFunction

close, getIterationRuntimeContext, getRuntimeContext, open, setRuntimeContext

Methods inherited from class java.lang.Object

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

Methods inherited from interface eu.stratosphere.api.common.functions.Function

close, getRuntimeContext, open, setRuntimeContext

Constructor Detail

KMeans.CentroidAccumulator

public KMeans.CentroidAccumulator()

Method Detail

reduce

public Tuple3<Integer,KMeans.Point,Long> reduce(Tuple3<Integer,KMeans.Point,Long> val1,
                                       Tuple3<Integer,KMeans.Point,Long> val2)

Specified by:

reduce in interface GenericReduce<Tuple3<Integer,KMeans.Point,Long>>

Specified by:

reduce in class ReduceFunction<Tuple3<Integer,KMeans.Point,Long>>