org.locationtech.geowave.analytic.sample.function

Class CentroidDistanceBasedSamplingRankFunction<T>

java.lang.Object

org.locationtech.geowave.analytic.sample.function.CentroidDistanceBasedSamplingRankFunction<T>

Type Parameters:

T - The data type for the object being sampled

All Implemented Interfaces:

SamplingRankFunction<T>

public class CentroidDistanceBasedSamplingRankFunction<T>
extends Object
implements SamplingRankFunction<T>

Rank objects using their distance to the closest centroid of a set of centroids. The specific rank is determined by the probability of the point meeting being a centroid, modeled in the implementation of SampleProbabilityFn.

The farther the distance, the higher the rank.

Field Summary

Fields

Modifier and Type	Field and Description
protected AnalyticItemWrapperFactory<T>	itemWrapperFactory
protected static org.slf4j.Logger	LOGGER

Constructor Summary

Constructors

Constructor and Description
CentroidDistanceBasedSamplingRankFunction()

Method Summary

Modifier and Type	Method and Description
void	initialize(org.apache.hadoop.mapreduce.JobContext context, Class<?> scope, org.slf4j.Logger logger)
double	rank(int sampleSize, T value)
static void	setParameters(org.apache.hadoop.conf.Configuration config, Class<?> scope, PropertyManagement runTimeProperties)

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

protected static final org.slf4j.Logger LOGGER

itemWrapperFactory

protected AnalyticItemWrapperFactory<T> itemWrapperFactory

Constructor Detail

CentroidDistanceBasedSamplingRankFunction

public CentroidDistanceBasedSamplingRankFunction()

Method Detail

setParameters

public static void setParameters(org.apache.hadoop.conf.Configuration config,
                                 Class<?> scope,
                                 PropertyManagement runTimeProperties)

initialize

public void initialize(org.apache.hadoop.mapreduce.JobContext context,
                       Class<?> scope,
                       org.slf4j.Logger logger)
                throws IOException

Specified by:

initialize in interface SamplingRankFunction<T>

Throws:

IOException

rank

public double rank(int sampleSize,
                   T value)

Specified by:

rank in interface SamplingRankFunction<T>