org.nd4j.linalg.dataset.api.preprocessor.classimbalance

Class UnderSamplingByMaskingMultiDataSetPreProcessor

java.lang.Object

org.nd4j.linalg.dataset.api.preprocessor.classimbalance.BaseUnderSamplingPreProcessor

org.nd4j.linalg.dataset.api.preprocessor.classimbalance.UnderSamplingByMaskingMultiDataSetPreProcessor

All Implemented Interfaces:

MultiDataSetPreProcessor

public class UnderSamplingByMaskingMultiDataSetPreProcessor
extends BaseUnderSamplingPreProcessor
implements MultiDataSetPreProcessor

Field Summary

Fields inherited from class org.nd4j.linalg.dataset.api.preprocessor.classimbalance.BaseUnderSamplingPreProcessor

tbpttWindowSize

Constructor Summary

Constructors

Constructor and Description
UnderSamplingByMaskingMultiDataSetPreProcessor(Map<Integer,Double> targetDist, int windowSize) The target distribution to approximate.

Method Summary

Modifier and Type	Method and Description
void	overrideMinorityDefault(int index) Will change the default minority label from "1" to "0" and correspondingly the majority class from "0" to "1" for the label at the index specified
void	preProcess(MultiDataSet multiDataSet) Preprocess the MultiDataSet

Methods inherited from class org.nd4j.linalg.dataset.api.preprocessor.classimbalance.BaseUnderSamplingPreProcessor

adjustMasks, donotMaskAllMajorityWindows, donotMaskMinorityWindows

Methods inherited from class java.lang.Object

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

Constructor Detail

UnderSamplingByMaskingMultiDataSetPreProcessor

public UnderSamplingByMaskingMultiDataSetPreProcessor(Map<Integer,Double> targetDist,
                                                      int windowSize)

The target distribution to approximate. Valid values are between (0,0.5].

Parameters:

targetDist - Key is index of label in multidataset to apply preprocessor. Value is the target dist for that index.

windowSize - Usually set to the size of the tbptt

Method Detail

overrideMinorityDefault

public void overrideMinorityDefault(int index)

Will change the default minority label from "1" to "0" and correspondingly the majority class from "0" to "1" for the label at the index specified

preProcess

public void preProcess(MultiDataSet multiDataSet)

Description copied from interface: MultiDataSetPreProcessor

Preprocess the MultiDataSet

Specified by:

preProcess in interface MultiDataSetPreProcessor