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

Class AttributeBasedStratifier

java.lang.Object

ai.libs.jaicore.ml.core.filter.sampling.inmemory.stratified.sampling.AttributeBasedStratifier

All Implemented Interfaces:

IStratifier, org.api4.java.common.control.ILoggingCustomizable, org.api4.java.common.control.IParallelizable

public class AttributeBasedStratifier
extends java.lang.Object
implements IStratifier, org.api4.java.common.control.ILoggingCustomizable

This class is responsible for computing the amount of strati in attribute-based stratified sampling and assigning elements to the strati.

Constructor Summary

Constructors

Constructor	Description
AttributeBasedStratifier()
AttributeBasedStratifier(java.util.List<java.lang.Integer> attributeIndices)
AttributeBasedStratifier(java.util.List<java.lang.Integer> attributeIndices, DiscretizationHelper.DiscretizationStrategy discretizationStrategy, int numberOfCategories)
AttributeBasedStratifier(java.util.List<java.lang.Integer> attributeIndices, java.util.Map<java.lang.Integer,AttributeDiscretizationPolicy> discretizationPolicies)

Method Summary

Modifier and Type	Method	Description
int	createStrati(org.api4.java.ai.ml.core.dataset.IDataset<?> dataset)	Prepares the stratification technique but does not assign instances to strati.
java.lang.String	getLoggerName()
int	getNumCPUs()
int	getStratum(org.api4.java.ai.ml.core.dataset.IInstance datapoint)	Determines to which stratum this instance belongs
void	setLoggerName(java.lang.String name)
void	setNumCPUs(int numberOfCPUs)

Methods inherited from class java.lang.Object

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

Constructor Detail

AttributeBasedStratifier

public AttributeBasedStratifier()

AttributeBasedStratifier

public AttributeBasedStratifier(java.util.List<java.lang.Integer> attributeIndices)

AttributeBasedStratifier

public AttributeBasedStratifier(java.util.List<java.lang.Integer> attributeIndices,
                                DiscretizationHelper.DiscretizationStrategy discretizationStrategy,
                                int numberOfCategories)

AttributeBasedStratifier

public AttributeBasedStratifier(java.util.List<java.lang.Integer> attributeIndices,
                                java.util.Map<java.lang.Integer,AttributeDiscretizationPolicy> discretizationPolicies)

Method Detail

createStrati

public int createStrati(org.api4.java.ai.ml.core.dataset.IDataset<?> dataset)

Description copied from interface: IStratifier

Prepares the stratification technique but does not assign instances to strati.

Specified by:

createStrati in interface IStratifier

Returns:

The number of strati for the given dataset

setNumCPUs

public void setNumCPUs(int numberOfCPUs)

Specified by:

setNumCPUs in interface org.api4.java.common.control.IParallelizable

getNumCPUs

public int getNumCPUs()

Specified by:

getNumCPUs in interface org.api4.java.common.control.IParallelizable

getStratum

public int getStratum(org.api4.java.ai.ml.core.dataset.IInstance datapoint)

Description copied from interface: IStratifier

Determines to which stratum this instance belongs

Specified by:

getStratum in interface IStratifier

Returns:

id of stratum

getLoggerName

public java.lang.String getLoggerName()

Specified by:

getLoggerName in interface org.api4.java.common.control.ILoggingCustomizable

setLoggerName

public void setLoggerName(java.lang.String name)

Specified by:

setLoggerName in interface org.api4.java.common.control.ILoggingCustomizable