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

Class ClassStratiFileAssigner

java.lang.Object

ai.libs.jaicore.ml.core.filter.sampling.infiles.stratified.sampling.ClassStratiFileAssigner

All Implemented Interfaces:

IStratiFileAssigner

public class ClassStratiFileAssigner
extends java.lang.Object
implements IStratiFileAssigner

Constructor Summary

Constructors

Constructor	Description
ClassStratiFileAssigner()	Constructor without a given target attribute.
ClassStratiFileAssigner(int targetAttribute)	Constructor with a given target attribute.

Method Summary

Modifier and Type	Method	Description
void	assignDatapoint(java.lang.String datapoint)	Select the suitable stratum for a datapoint and write it into the corresponding temporary file.
java.util.Map<java.lang.String,java.lang.Integer>	getAllCreatedStrati()	Get the used strati temporary files and the amount of datapoints inside of it.
void	setArffHeader(java.lang.String arffHeader)	Set the header of the original ARFF input file.
void	setTempFileHandler(ai.libs.jaicore.basic.TempFileHandler tempFileHandler)	Set the temporary file handler, which will be used to manage the temporary files for the strati.

Methods inherited from class java.lang.Object

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

Constructor Detail

ClassStratiFileAssigner

public ClassStratiFileAssigner(int targetAttribute)

Constructor with a given target attribute.

Parameters:

targetAttribute - Index of the target attribute.

ClassStratiFileAssigner

public ClassStratiFileAssigner()

Constructor without a given target attribute. The last feature will be used.

Method Detail

setTempFileHandler

public void setTempFileHandler(ai.libs.jaicore.basic.TempFileHandler tempFileHandler)

Description copied from interface: IStratiFileAssigner

Set the temporary file handler, which will be used to manage the temporary files for the strati.

Specified by:

setTempFileHandler in interface IStratiFileAssigner

Parameters:

tempFileHandler - Temporary File Handler to manage the files.

setArffHeader

public void setArffHeader(java.lang.String arffHeader)

Description copied from interface: IStratiFileAssigner

Set the header of the original ARFF input file. It has to be written on top of each temporary file. Besides of that it can be used to extract meta data about the dataset if needed.

Specified by:

setArffHeader in interface IStratiFileAssigner

Parameters:

arffHeader - ARFF header lines as a string.

assignDatapoint

public void assignDatapoint(java.lang.String datapoint)
                     throws org.api4.java.algorithm.exceptions.AlgorithmException

Description copied from interface: IStratiFileAssigner

Select the suitable stratum for a datapoint and write it into the corresponding temporary file.

Specified by:

assignDatapoint in interface IStratiFileAssigner

Parameters:

datapoint - String representation of the datapoint taken from the input file.

Throws:

org.api4.java.algorithm.exceptions.AlgorithmException - The datapoint representation was invalid or it could not be assigned to a stratum.

getAllCreatedStrati

public java.util.Map<java.lang.String,java.lang.Integer> getAllCreatedStrati()

Description copied from interface: IStratiFileAssigner

Get the used strati temporary files and the amount of datapoints inside of it.

Specified by:

getAllCreatedStrati in interface IStratiFileAssigner

Returns:

Mapping from UUID of the temporary file of a strati to the number of datapoints written into it.