edu.udo.cs.yale.operator.learner.meta
Class MultiModelByRegression

java.lang.Object
  edu.udo.cs.yale.operator.AbstractIOObject
      edu.udo.cs.yale.operator.ResultObjectAdapter
          edu.udo.cs.yale.operator.AbstractModel
              edu.udo.cs.yale.operator.IOModel
                  edu.udo.cs.yale.operator.learner.PredictionModel
                      edu.udo.cs.yale.operator.learner.meta.MultiModelByRegression

All Implemented Interfaces:

IOObject, Model, ResultObject, Saveable

public class MultiModelByRegression
extends PredictionModel

MultiModels are used for multi class learning tasks. A MultiModel contains a set of Models that can handle only two-class decisions. In this case, the models must be regression models which are combined.

Version:

$Id: MultiModelByRegression.java,v 1.8 2006/03/21 15:35:48 ingomierswa Exp $

Author:

Ingo Mierswa, Simon Fischer

Field Summary

static java.lang.String	ID
private Model[]	models

Constructor Summary

MultiModelByRegression()

MultiModelByRegression(Attribute label)

MultiModelByRegression(Attribute label, Model[] models)

Method Summary

java.lang.String	getIdentifier()
Model	getModel(int index) Returns a binary decision model for the given classification index.
int	getNumberOfModels()
void	performPrediction(ExampleSet exampleSet, Attribute predictedLabelAttribute) Iterates over all classes of the label and applies one model for each class.
void	readPredictionModelData(java.io.ObjectInputStream in) Reads all models from the file.
java.lang.String	toString()
void	writePredictionModelData(java.io.ObjectOutputStream out) Writes the models subsequently to the output stream.

Methods inherited from class edu.udo.cs.yale.operator.learner.PredictionModel

apply, createPredictedLabel, getLabel, readData, removePredictedLabel, setLabel, writeData

Methods inherited from class edu.udo.cs.yale.operator.AbstractModel

equals, getExtension, getFileDescription, readModel, readModel, save, setParameter, writeModel, writeModel

Methods inherited from class edu.udo.cs.yale.operator.ResultObjectAdapter

addAction, getActions, getName, getVisualisationComponent, toHTML, toResultString

Methods inherited from class edu.udo.cs.yale.operator.AbstractIOObject

copy, read, read, read, write, write

Methods inherited from class java.lang.Object

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

Methods inherited from interface edu.udo.cs.yale.operator.ResultObject

getActions, getName, getVisualisationComponent, toResultString

Methods inherited from interface edu.udo.cs.yale.operator.IOObject

copy, write, write

Field Detail

ID

public static final java.lang.String ID

See Also:

Constant Field Values

models

private Model[] models

Constructor Detail

MultiModelByRegression

public MultiModelByRegression()

MultiModelByRegression

public MultiModelByRegression(Attribute label)

MultiModelByRegression

public MultiModelByRegression(Attribute label,
                              Model[] models)

Method Detail

getNumberOfModels

public int getNumberOfModels()

getModel

public Model getModel(int index)

Returns a binary decision model for the given classification index.

performPrediction

public void performPrediction(ExampleSet exampleSet,
                              Attribute predictedLabelAttribute)
                       throws OperatorException

Iterates over all classes of the label and applies one model for each class. For each example the predicted label is determined by choosing the model with the highest confidence.

Specified by:

performPrediction in class PredictionModel

Throws:

OperatorException

writePredictionModelData

public void writePredictionModelData(java.io.ObjectOutputStream out)
                              throws java.io.IOException

Writes the models subsequently to the output stream.

Specified by:

writePredictionModelData in class PredictionModel

Throws:

java.io.IOException

readPredictionModelData

public void readPredictionModelData(java.io.ObjectInputStream in)
                             throws java.io.IOException

Reads all models from the file.

Specified by:

readPredictionModelData in class PredictionModel

Throws:

java.io.IOException

getIdentifier

public java.lang.String getIdentifier()

toString

public java.lang.String toString()

Overrides:

toString in class PredictionModel