Package weka.classifiers.rules
Class Prism
- java.lang.Object
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- weka.classifiers.Classifier
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- weka.classifiers.rules.Prism
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Cloneable
,CapabilitiesHandler
,OptionHandler
,RevisionHandler
,TechnicalInformationHandler
public class Prism extends Classifier implements TechnicalInformationHandler
Class for building and using a PRISM rule set for classification. Can only deal with nominal attributes. Can't deal with missing values. Doesn't do any pruning.
For more information, see
J. Cendrowska (1987). PRISM: An algorithm for inducing modular rules. International Journal of Man-Machine Studies. 27(4):349-370. BibTeX:@article{Cendrowska1987, author = {J. Cendrowska}, journal = {International Journal of Man-Machine Studies}, number = {4}, pages = {349-370}, title = {PRISM: An algorithm for inducing modular rules}, volume = {27}, year = {1987} }
Valid options are:-D If set, classifier is run in debug mode and may output additional info to the console
- Version:
- $Revision: 5529 $
- Author:
- Ian H. Witten (ihw@cs.waikato.ac.nz)
- See Also:
- Serialized Form
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Constructor Summary
Constructors Constructor Description Prism()
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description void
buildClassifier(Instances data)
Generates the classifier.double
classifyInstance(Instance inst)
Classifies a given instance.Capabilities
getCapabilities()
Returns default capabilities of the classifier.java.lang.String
getRevision()
Returns the revision string.TechnicalInformation
getTechnicalInformation()
Returns an instance of a TechnicalInformation object, containing detailed information about the technical background of this class, e.g., paper reference or book this class is based on.java.lang.String
globalInfo()
Returns a string describing classifierstatic void
main(java.lang.String[] args)
Main method for testing this classjava.lang.String
toString()
Prints a description of the classifier.-
Methods inherited from class weka.classifiers.Classifier
debugTipText, distributionForInstance, forName, getDebug, getOptions, listOptions, makeCopies, makeCopy, setDebug, setOptions
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Method Detail
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globalInfo
public java.lang.String globalInfo()
Returns a string describing classifier- Returns:
- a description suitable for displaying in the explorer/experimenter gui
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getTechnicalInformation
public TechnicalInformation getTechnicalInformation()
Returns an instance of a TechnicalInformation object, containing detailed information about the technical background of this class, e.g., paper reference or book this class is based on.- Specified by:
getTechnicalInformation
in interfaceTechnicalInformationHandler
- Returns:
- the technical information about this class
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classifyInstance
public double classifyInstance(Instance inst)
Classifies a given instance.- Overrides:
classifyInstance
in classClassifier
- Parameters:
inst
- the instance to be classified- Returns:
- the classification
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getCapabilities
public Capabilities getCapabilities()
Returns default capabilities of the classifier.- Specified by:
getCapabilities
in interfaceCapabilitiesHandler
- Overrides:
getCapabilities
in classClassifier
- Returns:
- the capabilities of this classifier
- See Also:
Capabilities
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buildClassifier
public void buildClassifier(Instances data) throws java.lang.Exception
Generates the classifier.- Specified by:
buildClassifier
in classClassifier
- Parameters:
data
- the data to be used- Throws:
java.lang.Exception
- if the classifier can't built successfully
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toString
public java.lang.String toString()
Prints a description of the classifier.- Overrides:
toString
in classjava.lang.Object
- Returns:
- a description of the classifier as a string
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getRevision
public java.lang.String getRevision()
Returns the revision string.- Specified by:
getRevision
in interfaceRevisionHandler
- Overrides:
getRevision
in classClassifier
- Returns:
- the revision
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main
public static void main(java.lang.String[] args)
Main method for testing this class- Parameters:
args
- the commandline parameters
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