eu.stratosphere.example.java.clustering

Class KMeans.SelectNearestCenter

java.lang.Object

eu.stratosphere.api.common.functions.AbstractFunction

eu.stratosphere.api.java.functions.MapFunction<KMeans.Point,Tuple2<Integer,KMeans.Point>>

eu.stratosphere.example.java.clustering.KMeans.SelectNearestCenter

All Implemented Interfaces:

Function, GenericMap<KMeans.Point,Tuple2<Integer,KMeans.Point>>, Serializable

Enclosing class:

KMeans

public static final class KMeans.SelectNearestCenter
extends MapFunction<KMeans.Point,Tuple2<Integer,KMeans.Point>>

Determines the closest cluster center for a data point.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
SelectNearestCenter()

Method Summary

Modifier and Type	Method and Description
Tuple2<Integer,KMeans.Point>	map(KMeans.Point p)
void	open(Configuration parameters) Reads the centroid values from a broadcast variable into a collection.

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

close, getIterationRuntimeContext, getRuntimeContext, 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, setRuntimeContext

Constructor Detail

SelectNearestCenter

public SelectNearestCenter()

Method Detail

open

public void open(Configuration parameters)
          throws Exception

Reads the centroid values from a broadcast variable into a collection.

Specified by:

open in interface Function

Overrides:

open in class AbstractFunction

Throws:

Exception

map

public Tuple2<Integer,KMeans.Point> map(KMeans.Point p)
                                 throws Exception

Specified by:

map in interface GenericMap<KMeans.Point,Tuple2<Integer,KMeans.Point>>

Specified by:

map in class MapFunction<KMeans.Point,Tuple2<Integer,KMeans.Point>>

Throws:

Exception