RegSMO (original) (raw)

java.lang.Object
- weka.classifiers.functions.supportVector.RegOptimizer
- - weka.classifiers.functions.supportVector.RegSMO
All Implemented Interfaces:
java.io.Serializable, OptionHandler, RevisionHandler, TechnicalInformationHandler
Direct Known Subclasses:
RegSMOImproved

public class RegSMO
extends RegOptimizer
implements TechnicalInformationHandler
Implementation of SMO for support vector regression as described in :
A.J. Smola, B. Schoelkopf (1998). A tutorial on support vector regression.
BibTeX:
@misc{Smola1998,
author = {A.J. Smola and B. Schoelkopf},
note = {NeuroCOLT2 Technical Report NC2-TR-1998-030},
title = {A tutorial on support vector regression},
year = {1998}
}

Valid options are:
-P
The epsilon for round-off error.
(default 1.0e-12)
-L
The epsilon parameter in epsilon-insensitive loss function.
(default 1.0e-3)
-W
The random number seed.
(default 1)
Version: Revision:1.4Revision: 1.4 Revision:1.4
Author:
Remco Bouckaert (remco@cs.waikato.ac.nz,rrb@xm.co.nz)
See Also:
Serialized Form

Field Summary

 * ### Fields inherited from class weka.classifiers.functions.supportVector.[RegOptimizer](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html "class in weka.classifiers.functions.supportVector")  
 `[m_alpha](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#m%5Falpha), [m_alphaStar](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#m%5FalphaStar)`

Constructor Summary

Constructors

Constructor and Description
RegSMO() default constructor

Method Summary

All Methods Instance Methods Concrete Methods

Modifier and Type	Method and Description
void	buildClassifier(Instances instances) learn SVM parameters from data using Smola's SMO algorithm.
java.lang.String	epsilonTipText() Returns the tip text for this property
double	getEpsilon() Get the value of epsilon.
java.lang.String[]	getOptions() Gets the current settings 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 classifier
java.util.Enumeration	listOptions() Returns an enumeration describing the available options
void	optimize() finds alpha and alpha* parameters that optimize the SVM target function
void	setEpsilon(double v) Set the value of epsilon.
void	setOptions(java.lang.String[] options) Parses a given list of options.

   * ### Methods inherited from class weka.classifiers.functions.supportVector.[RegOptimizer](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html "class in weka.classifiers.functions.supportVector")  
   `[epsilonParameterTipText](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#epsilonParameterTipText--), [getCacheHits](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#getCacheHits--), [getEpsilonParameter](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#getEpsilonParameter--), [getKernelEvaluations](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#getKernelEvaluations--), [getSeed](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#getSeed--), [modelBuilt](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#modelBuilt--), [seedTipText](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#seedTipText--), [setEpsilonParameter](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#setEpsilonParameter-double-), [setSeed](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#setSeed-int-), [setSMOReg](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#setSMOReg-weka.classifiers.functions.SMOreg-), [SVMOutput](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#SVMOutput-weka.core.Instance-), [toString](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#toString--)`  
   * ### Methods inherited from class java.lang.Object  
   `equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

 * #### RegSMO  
 public RegSMO()  
 default constructor

Method Detail

* #### globalInfo  
public java.lang.String globalInfo()  
Returns a string describing classifier  
Returns:  
a description suitable for displaying in the explorer/experimenter gui  
* #### getTechnicalInformation  
public [TechnicalInformation](../../../../weka/core/TechnicalInformation.html "class in weka.core") 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](../../../../weka/core/TechnicalInformationHandler.html#getTechnicalInformation--)` in interface `[TechnicalInformationHandler](../../../../weka/core/TechnicalInformationHandler.html "interface in weka.core")`  
Returns:  
the technical information about this class  
* #### listOptions  
public java.util.Enumeration listOptions()  
Returns an enumeration describing the available options  
Specified by:  
`[listOptions](../../../../weka/core/OptionHandler.html#listOptions--)` in interface `[OptionHandler](../../../../weka/core/OptionHandler.html "interface in weka.core")`  
Overrides:  
`[listOptions](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#listOptions--)` in class `[RegOptimizer](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html "class in weka.classifiers.functions.supportVector")`  
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:  
 -P <double>  
  The epsilon for round-off error.  
  (default 1.0e-12)  
 -L <double>  
  The epsilon parameter in epsilon-insensitive loss function.  
  (default 1.0e-3)  
 -W <double>  
  The random number seed.  
  (default 1)  
Specified by:  
`[setOptions](../../../../weka/core/OptionHandler.html#setOptions-java.lang.String:A-)` in interface `[OptionHandler](../../../../weka/core/OptionHandler.html "interface in weka.core")`  
Overrides:  
`[setOptions](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#setOptions-java.lang.String:A-)` in class `[RegOptimizer](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html "class in weka.classifiers.functions.supportVector")`  
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](../../../../weka/core/OptionHandler.html#getOptions--)` in interface `[OptionHandler](../../../../weka/core/OptionHandler.html "interface in weka.core")`  
Overrides:  
`[getOptions](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#getOptions--)` in class `[RegOptimizer](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html "class in weka.classifiers.functions.supportVector")`  
Returns:  
an array of strings suitable for passing to setOptions  
* #### epsilonTipText  
public java.lang.String epsilonTipText()  
Returns the tip text for this property  
Returns:  
tip text for this property suitable for displaying in the explorer/experimenter gui  
* #### getEpsilon  
public double getEpsilon()  
Get the value of epsilon.  
Returns:  
Value of epsilon.  
* #### setEpsilon  
public void setEpsilon(double v)  
Set the value of epsilon.  
Parameters:  
`v` \- Value to assign to epsilon.  
* #### optimize  
public void optimize()  
              throws java.lang.Exception  
finds alpha and alpha\* parameters that optimize the SVM target function  
Throws:  
`java.lang.Exception`  
* #### buildClassifier  
public void buildClassifier([Instances](../../../../weka/core/Instances.html "class in weka.core") instances)  
                     throws java.lang.Exception  
learn SVM parameters from data using Smola's SMO algorithm. Subclasses should implement something more interesting.  
Overrides:  
`[buildClassifier](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#buildClassifier-weka.core.Instances-)` in class `[RegOptimizer](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html "class in weka.classifiers.functions.supportVector")`  
Parameters:  
`instances` \- the data to learn from  
Throws:  
`java.lang.Exception` \- if something goes wrong  
* #### getRevision  
public java.lang.String getRevision()  
Returns the revision string.  
Specified by:  
`[getRevision](../../../../weka/core/RevisionHandler.html#getRevision--)` in interface `[RevisionHandler](../../../../weka/core/RevisionHandler.html "interface in weka.core")`  
Overrides:  
`[getRevision](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html#getRevision--)` in class `[RegOptimizer](../../../../weka/classifiers/functions/supportVector/RegOptimizer.html "class in weka.classifiers.functions.supportVector")`  
Returns:  
the revision

RegSMO (original) (raw)

Field Summary

Constructor Summary

Method Summary

Constructor Detail

Method Detail