Package ai.libs.jaicore.ml.core.dataset.sampling.infiles

Class ReservoirSampling

java.lang.Object

ai.libs.jaicore.basic.algorithm.AAlgorithm<java.io.File,java.io.File>

ai.libs.jaicore.ml.core.dataset.sampling.infiles.AFileSamplingAlgorithm

ai.libs.jaicore.ml.core.dataset.sampling.infiles.ReservoirSampling

All Implemented Interfaces:

ai.libs.jaicore.basic.algorithm.IAlgorithm<java.io.File,java.io.File>, ai.libs.jaicore.basic.Cancelable, ai.libs.jaicore.basic.ILoggingCustomizable, java.lang.Iterable<ai.libs.jaicore.basic.algorithm.events.AlgorithmEvent>, java.util.concurrent.Callable<java.io.File>, java.util.Iterator<ai.libs.jaicore.basic.algorithm.events.AlgorithmEvent>

public class ReservoirSampling
extends AFileSamplingAlgorithm

Implementation of the Reservoir Sampling algorithm(comparable to a Simple Random Sampling for streamed data). For a desired sample of size n, the first n elements of the stream are directly selected and the remaining ones will replace these with decreasing probability.

Field Summary

Fields inherited from class ai.libs.jaicore.ml.core.dataset.sampling.infiles.AFileSamplingAlgorithm

outputFileWriter, sampleSize

Constructor Summary

Constructors

Constructor	Description
ReservoirSampling(java.util.Random random, java.io.File input)

Method Summary

Modifier and Type	Method	Description
protected void	cleanUp()	Implement custom clean up behaviour.
ai.libs.jaicore.basic.algorithm.events.AlgorithmEvent	nextWithException()

Methods inherited from class ai.libs.jaicore.ml.core.dataset.sampling.infiles.AFileSamplingAlgorithm

call, setOutputFileName, setSampleSize

Methods inherited from class ai.libs.jaicore.basic.algorithm.AAlgorithm

activate, announceTimeoutDetected, avoidReinterruptionOnShutdownOnCurrentThread, cancel, checkAndConductTermination, checkTermination, computeTimeoutAware, getActivationTime, getConfig, getId, getInput, getLoggerName, getNumCPUs, getRemainingTimeToDeadline, getState, getTimeout, getTimeoutPrecautionOffset, hasNext, hasThreadBeenInterruptedDuringShutdown, interruptThreadAsPartOfShutdown, isCanceled, isShutdownInitialized, isStopCriterionSatisfied, isTimeouted, iterator, next, post, registerActiveThread, registerListener, resolveShutdownInterruptOnCurrentThread, setConfig, setLoggerName, setMaxNumThreads, setNumCPUs, setState, setTimeout, setTimeout, setTimeoutPrecautionOffset, shutdown, terminate, unregisterActiveThread, unregisterThreadAndShutdown

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Methods inherited from interface java.util.Iterator

forEachRemaining, remove

Constructor Detail

ReservoirSampling

public ReservoirSampling(java.util.Random random,
                         java.io.File input)

Method Detail

nextWithException

public ai.libs.jaicore.basic.algorithm.events.AlgorithmEvent nextWithException()
                                                                        throws java.lang.InterruptedException,
                                                                               ai.libs.jaicore.basic.algorithm.AlgorithmExecutionCanceledException,
                                                                               ai.libs.jaicore.basic.algorithm.exceptions.AlgorithmException

Throws:

java.lang.InterruptedException

ai.libs.jaicore.basic.algorithm.AlgorithmExecutionCanceledException

ai.libs.jaicore.basic.algorithm.exceptions.AlgorithmException

cleanUp

protected void cleanUp()

Description copied from class: AFileSamplingAlgorithm

Implement custom clean up behaviour.

Specified by:

cleanUp in class AFileSamplingAlgorithm