eu.stratosphere.example.java.record.kmeans.udfs

Class ComputeDistance

java.lang.Object

eu.stratosphere.api.common.functions.AbstractFunction

eu.stratosphere.api.java.record.functions.CrossFunction

eu.stratosphere.example.java.record.kmeans.udfs.ComputeDistance

All Implemented Interfaces:

Function, GenericCrosser<Record,Record,Record>, Serializable

public class ComputeDistance
extends CrossFunction
implements Serializable

Cross PACT computes the distance of all data points to all cluster centers.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
ComputeDistance()

Method Summary

Methods

Modifier and Type	Method and Description
void	cross(Record dataPointRecord, Record clusterCenterRecord, Collector<Record> out) Computes the distance of one data point to one cluster center.

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

ComputeDistance

public ComputeDistance()

Method Detail

cross

public void cross(Record dataPointRecord,
         Record clusterCenterRecord,
         Collector<Record> out)

Computes the distance of one data point to one cluster center. Output Format: 0: pointID 1: pointVector 2: clusterID 3: distance

Specified by:

cross in interface GenericCrosser<Record,Record,Record>

Specified by:

cross in class CrossFunction