Package ai.libs.jaicore.ml.core.filter.sampling.inmemory.casecontrol

Class ClassifierWeightedSampling<D extends org.api4.java.ai.ml.core.dataset.supervised.ILabeledDataset<? extends org.api4.java.ai.ml.core.dataset.supervised.ILabeledInstance>>

java.lang.Object

ai.libs.jaicore.basic.algorithm.AAlgorithm<D,D>

ai.libs.jaicore.ml.core.filter.sampling.inmemory.ASamplingAlgorithm<D>

ai.libs.jaicore.ml.core.filter.sampling.inmemory.casecontrol.CaseControlLikeSampling<D>

ai.libs.jaicore.ml.core.filter.sampling.inmemory.casecontrol.APilotEstimateSampling<D>

ai.libs.jaicore.ml.core.filter.sampling.inmemory.casecontrol.ClassifierWeightedSampling<D>

Type Parameters:

I -

All Implemented Interfaces:

java.lang.Iterable<org.api4.java.algorithm.events.IAlgorithmEvent>, java.util.concurrent.Callable<D>, java.util.Iterator<org.api4.java.algorithm.events.IAlgorithmEvent>, org.api4.java.ai.ml.core.filter.unsupervised.sampling.ISamplingAlgorithm<D>, org.api4.java.algorithm.IAlgorithm<D,D>, org.api4.java.common.control.ICancelable, org.api4.java.common.control.ILoggingCustomizable, org.api4.java.common.event.IEventEmitter<java.lang.Object>, org.api4.java.common.event.IRelaxedEventEmitter

public class ClassifierWeightedSampling<D extends org.api4.java.ai.ml.core.dataset.supervised.ILabeledDataset<? extends org.api4.java.ai.ml.core.dataset.supervised.ILabeledInstance>>
extends APilotEstimateSampling<D>

The idea behind this Sampling method is to weight instances depended on the way a pilot estimator p classified them. Instances that p classified right but was unsure contain the most information and are most likely to be chosen. Instances that p is very sure about and Instances that p is quite sure about their actual class and classified them falsely, are medium likely to be chosen. Instances that p is very unsure about their actual class and classified them falsely are not likely to be chosen. Note that any instance still has a base probability to be chosen.

Field Summary

Fields inherited from class ai.libs.jaicore.ml.core.filter.sampling.inmemory.casecontrol.APilotEstimateSampling

preSampleSize

Fields inherited from class ai.libs.jaicore.ml.core.filter.sampling.inmemory.casecontrol.CaseControlLikeSampling

acceptanceThresholds, rand

Fields inherited from class ai.libs.jaicore.ml.core.filter.sampling.inmemory.ASamplingAlgorithm

sample, sampleSize

Constructor Summary

Constructors

Constructor	Description
ClassifierWeightedSampling(org.api4.java.ai.ml.classification.IClassifier pilotEstimator, java.util.Random rand, D dataset)

Method Summary

Modifier and Type	Method	Description
java.util.List<ai.libs.jaicore.basic.sets.Pair<org.api4.java.ai.ml.core.dataset.supervised.ILabeledInstance,java.lang.Double>>	calculateAcceptanceThresholdsWithTrainedPilot(D dataset, org.api4.java.ai.ml.classification.IClassifier pilot)

Methods inherited from class ai.libs.jaicore.ml.core.filter.sampling.inmemory.casecontrol.APilotEstimateSampling

computeAcceptanceThresholds, getLoggerName, getPilotEstimator, setLoggerName

Methods inherited from class ai.libs.jaicore.ml.core.filter.sampling.inmemory.casecontrol.CaseControlLikeSampling

countClassOccurrences, getAcceptanceThresholds, nextWithException, setAcceptanceTresholds

Methods inherited from class ai.libs.jaicore.ml.core.filter.sampling.inmemory.ASamplingAlgorithm

call, doInactiveStep, getComplementOfLastSample, getLogger, getSampleSize, nextSample, setSampleSize, setSampleSize

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

activate, announceTimeoutDetected, avoidReinterruptionOnShutdownOnCurrentThread, cancel, checkAndConductTermination, checkTermination, computeTimeoutAware, getActivationTime, getConfig, getDeadline, getId, getInput, getListeners, getNumCPUs, getRemainingTimeToDeadline, getState, getTimeout, getTimeoutPrecautionOffset, hasNext, hasThreadBeenInterruptedDuringShutdown, interruptThreadAsPartOfShutdown, isCanceled, isShutdownInitialized, isStopCriterionSatisfied, isTimeoutDefined, isTimeouted, iterator, next, post, registerActiveThread, registerListener, resolveShutdownInterruptOnCurrentThread, setConfig, setDeadline, 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 org.api4.java.algorithm.IAlgorithm

getConfig, getId, getInput, getNumCPUs, getTimeout, registerListener, setMaxNumThreads, setNumCPUs, setTimeout, setTimeout

Methods inherited from interface org.api4.java.common.control.ICancelable

cancel

Methods inherited from interface java.lang.Iterable

forEach, iterator, spliterator

Methods inherited from interface java.util.Iterator

forEachRemaining, hasNext, next, remove

Constructor Detail

ClassifierWeightedSampling

public ClassifierWeightedSampling(org.api4.java.ai.ml.classification.IClassifier pilotEstimator,
                                  java.util.Random rand,
                                  D dataset)

Method Detail

calculateAcceptanceThresholdsWithTrainedPilot

public java.util.List<ai.libs.jaicore.basic.sets.Pair<org.api4.java.ai.ml.core.dataset.supervised.ILabeledInstance,java.lang.Double>> calculateAcceptanceThresholdsWithTrainedPilot(D dataset,
                                                                                                                                                                                          org.api4.java.ai.ml.classification.IClassifier pilot)
                                                                                                                                                                                   throws java.lang.InterruptedException

Specified by:

calculateAcceptanceThresholdsWithTrainedPilot in class APilotEstimateSampling<D extends org.api4.java.ai.ml.core.dataset.supervised.ILabeledDataset<? extends org.api4.java.ai.ml.core.dataset.supervised.ILabeledInstance>>

Throws:

java.lang.InterruptedException