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Class weka.classifiers.CheckClassifier

java.lang.Object
   |
   +----weka.classifiers.CheckClassifier

public class CheckClassifier

extends Object

implements OptionHandler

Typical usage:

java weka.classifiers.CheckClassifier -W classifier_name classifier_options

CheckClassifier reports on the following:

• Classifier abilities
  • Possible command line options to the classifier
  • Whether the classifier is a distributionClassifier
  • Whether the classifier can predict nominal and/or predict numeric class attributes. Warnings will be displayed if performance is worse than ZeroR
  • Whether the classifier can be trained incrementally
  • Whether the classifier can handle numeric predictor attributes
  • Whether the classifier can handle nominal predictor attributes
  • Whether the classifier can handle string predictor attributes
  • Whether the classifier can handle missing predictor values
  • Whether the classifier can handle missing class values
  • Whether a nominal classifier only handles 2 class problems
  • Whether the classifier can handle instance weights
• Correct functioning
  • Correct initialisation during buildClassifier (i.e. no result changes when buildClassifier called repeatedly)
  • Whether incremental training produces the same results as during non-incremental training (which may or may not be OK)
  • Whether the classifier alters the data pased to it (number of instances, instance order, instance weights, etc)
• Degenerate cases
  • building classifier with zero training instances
  • all but one predictor attribute values missing
  • all predictor attribute values missing
  • all but one class values missing
  • all class values missing

Valid options are:

-D
Turn on debugging output.

-W classname
Specify the full class name of a classifier to perform the tests on (required).

Options after -- are passed to the designated classifier.

Version:

$Revision: 1.8 $

Author:

Len Trigg (trigg@cs.waikato.ac.nz)

CheckClassifier()

doTests()

Begin the tests, reporting results to System.out

getClassifier()

Get the classifier used as the classifier

getDebug()

Get whether debugging is turned on

getOptions()

Gets the current settings of the CheckClassifier.

listOptions()

Returns an enumeration describing the available options

main(String[])

Test method for this class

setClassifier(Classifier)

Set the classifier for boosting.

setDebug(boolean)

Set debugging mode

setOptions(String[])

Parses a given list of options.

 public CheckClassifier()

 public Enumeration listOptions()

Returns an enumeration describing the available options

Returns:

an enumeration of all the available options

 public void setOptions(String options[]) throws Exception

Parses a given list of options. Valid options are:

-D
Turn on debugging output.

-W classname
Specify the full class name of a classifier to perform the tests on (required).

Options after -- are passed to the designated classifier

Parameters:

options - the list of options as an array of strings

Throws: Exception

if an option is not supported

 public String[] getOptions()

Gets the current settings of the CheckClassifier.

Returns:

an array of strings suitable for passing to setOptions

 public void doTests()

Begin the tests, reporting results to System.out

 public void setDebug(boolean debug)

Set debugging mode

Parameters:

debug - true if debug output should be printed

 public boolean getDebug()

Get whether debugging is turned on

Returns:

true if debugging output is on

 public void setClassifier(Classifier newClassifier)

Set the classifier for boosting.

Parameters:

newClassifier - the Classifier to use.

 public Classifier getClassifier()

Get the classifier used as the classifier

Returns:

the classifier used as the classifier

 public static void main(String args[])

Test method for this class

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