Package weka.experiment
Class RegressionSplitEvaluator
- java.lang.Object
-
- weka.experiment.RegressionSplitEvaluator
-
- All Implemented Interfaces:
java.io.Serializable
,AdditionalMeasureProducer
,OptionHandler
,RevisionHandler
,SplitEvaluator
public class RegressionSplitEvaluator extends java.lang.Object implements SplitEvaluator, OptionHandler, AdditionalMeasureProducer, RevisionHandler
A SplitEvaluator that produces results for a classification scheme on a numeric class attribute. Valid options are:-W <class name> The full class name of the classifier. eg: weka.classifiers.bayes.NaiveBayes
Options specific to classifier weka.classifiers.rules.ZeroR:
-D If set, classifier is run in debug mode and may output additional info to the console
- Version:
- $Revision: 11198 $
- Author:
- Len Trigg (trigg@cs.waikato.ac.nz)
- See Also:
- Serialized Form
-
-
Constructor Summary
Constructors Constructor Description RegressionSplitEvaluator()
No args constructor.
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.String
classifierTipText()
Returns the tip text for this propertyjava.util.Enumeration
enumerateMeasures()
Returns an enumeration of any additional measure names that might be in the classifierClassifier
getClassifier()
Get the value of Classifier.java.lang.Object[]
getKey()
Gets the key describing the current SplitEvaluator.java.lang.String[]
getKeyNames()
Gets the names of each of the key columns produced for a single run.java.lang.Object[]
getKeyTypes()
Gets the data types of each of the key columns produced for a single run.double
getMeasure(java.lang.String additionalMeasureName)
Returns the value of the named measurejava.lang.String[]
getOptions()
Gets the current settings of the Classifier.java.lang.String
getRawResultOutput()
Gets the raw output from the classifierjava.lang.Object[]
getResult(Instances train, Instances test)
Gets the results for the supplied train and test datasets.java.lang.String[]
getResultNames()
Gets the names of each of the result columns produced for a single run.java.lang.Object[]
getResultTypes()
Gets the data types of each of the result columns produced for a single run.java.lang.String
getRevision()
Returns the revision string.java.lang.String
globalInfo()
Returns a string describing this split evaluatorjava.util.Enumeration
listOptions()
Returns an enumeration describing the available options..void
setAdditionalMeasures(java.lang.String[] additionalMeasures)
Set a list of method names for additional measures to look for in Classifiers.void
setClassifier(Classifier newClassifier)
Sets the classifier.void
setClassifierName(java.lang.String newClassifierName)
Set the Classifier to use, given it's class name.void
setOptions(java.lang.String[] options)
Parses a given list of options.java.lang.String
toString()
Returns a text description of the split evaluator.
-
-
-
Method Detail
-
globalInfo
public java.lang.String globalInfo()
Returns a string describing this split evaluator- Returns:
- a description of the split evaluator suitable for displaying in the explorer/experimenter gui
-
listOptions
public java.util.Enumeration listOptions()
Returns an enumeration describing the available options..- Specified by:
listOptions
in interfaceOptionHandler
- Returns:
- an enumeration of all the available options.
-
setOptions
public void setOptions(java.lang.String[] options) throws java.lang.Exception
Parses a given list of options. Valid options are:-W <class name> The full class name of the classifier. eg: weka.classifiers.bayes.NaiveBayes
Options specific to classifier weka.classifiers.rules.ZeroR:
-D If set, classifier is run in debug mode and may output additional info to the console
All option after -- will be passed to the classifier.- Specified by:
setOptions
in interfaceOptionHandler
- Parameters:
options
- the list of options as an array of strings- Throws:
java.lang.Exception
- if an option is not supported
-
getOptions
public java.lang.String[] getOptions()
Gets the current settings of the Classifier.- Specified by:
getOptions
in interfaceOptionHandler
- Returns:
- an array of strings suitable for passing to setOptions
-
setAdditionalMeasures
public void setAdditionalMeasures(java.lang.String[] additionalMeasures)
Set a list of method names for additional measures to look for in Classifiers. This could contain many measures (of which only a subset may be produceable by the current Classifier) if an experiment is the type that iterates over a set of properties.- Specified by:
setAdditionalMeasures
in interfaceSplitEvaluator
- Parameters:
additionalMeasures
- an array of method names.
-
enumerateMeasures
public java.util.Enumeration enumerateMeasures()
Returns an enumeration of any additional measure names that might be in the classifier- Specified by:
enumerateMeasures
in interfaceAdditionalMeasureProducer
- Returns:
- an enumeration of the measure names
-
getMeasure
public double getMeasure(java.lang.String additionalMeasureName)
Returns the value of the named measure- Specified by:
getMeasure
in interfaceAdditionalMeasureProducer
- Parameters:
additionalMeasureName
- the name of the measure to query for its value- Returns:
- the value of the named measure
- Throws:
java.lang.IllegalArgumentException
- if the named measure is not supported
-
getKeyTypes
public java.lang.Object[] getKeyTypes()
Gets the data types of each of the key columns produced for a single run. The number of key fields must be constant for a given SplitEvaluator.- Specified by:
getKeyTypes
in interfaceSplitEvaluator
- Returns:
- an array containing objects of the type of each key column. The objects should be Strings, or Doubles.
-
getKeyNames
public java.lang.String[] getKeyNames()
Gets the names of each of the key columns produced for a single run. The number of key fields must be constant for a given SplitEvaluator.- Specified by:
getKeyNames
in interfaceSplitEvaluator
- Returns:
- an array containing the name of each key column
-
getKey
public java.lang.Object[] getKey()
Gets the key describing the current SplitEvaluator. For example This may contain the name of the classifier used for classifier predictive evaluation. The number of key fields must be constant for a given SplitEvaluator.- Specified by:
getKey
in interfaceSplitEvaluator
- Returns:
- an array of objects containing the key.
-
getResultTypes
public java.lang.Object[] getResultTypes()
Gets the data types of each of the result columns produced for a single run. The number of result fields must be constant for a given SplitEvaluator.- Specified by:
getResultTypes
in interfaceSplitEvaluator
- Returns:
- an array containing objects of the type of each result column. The objects should be Strings, or Doubles.
-
getResultNames
public java.lang.String[] getResultNames()
Gets the names of each of the result columns produced for a single run. The number of result fields must be constant for a given SplitEvaluator.- Specified by:
getResultNames
in interfaceSplitEvaluator
- Returns:
- an array containing the name of each result column
-
getResult
public java.lang.Object[] getResult(Instances train, Instances test) throws java.lang.Exception
Gets the results for the supplied train and test datasets. Now performs a deep copy of the classifier before it is built and evaluated (just in case the classifier is not initialized properly in buildClassifier()).- Specified by:
getResult
in interfaceSplitEvaluator
- Parameters:
train
- the training Instances.test
- the testing Instances.- Returns:
- the results stored in an array. The objects stored in the array may be Strings, Doubles, or null (for the missing value).
- Throws:
java.lang.Exception
- if a problem occurs while getting the results
-
classifierTipText
public java.lang.String classifierTipText()
Returns the tip text for this property- Returns:
- tip text for this property suitable for displaying in the explorer/experimenter gui
-
getClassifier
public Classifier getClassifier()
Get the value of Classifier.- Returns:
- Value of Classifier.
-
setClassifier
public void setClassifier(Classifier newClassifier)
Sets the classifier.- Parameters:
newClassifier
- the new classifier to use.
-
setClassifierName
public void setClassifierName(java.lang.String newClassifierName) throws java.lang.Exception
Set the Classifier to use, given it's class name. A new classifier will be instantiated.- Parameters:
newClassifierName
- the Classifier class name.- Throws:
java.lang.Exception
- if the class name is invalid.
-
getRawResultOutput
public java.lang.String getRawResultOutput()
Gets the raw output from the classifier- Specified by:
getRawResultOutput
in interfaceSplitEvaluator
- Returns:
- the raw output from the classifier
-
toString
public java.lang.String toString()
Returns a text description of the split evaluator.- Overrides:
toString
in classjava.lang.Object
- Returns:
- a text description of the split evaluator.
-
getRevision
public java.lang.String getRevision()
Returns the revision string.- Specified by:
getRevision
in interfaceRevisionHandler
- Returns:
- the revision
-
-