类 FilteredClassifier

所有已实现的接口:
Serializable, Cloneable, CapabilitiesHandler, Drawable, OptionHandler, RevisionHandler

public class FilteredClassifier extends SingleClassifierEnhancer implements Drawable
Class for running an arbitrary classifier on data that has been passed through an arbitrary filter. Like the classifier, the structure of the filter is based exclusively on the training data and test instances will be processed by the filter without changing their structure.

Valid options are:

 -F <filter specification>
  Full class name of filter to use, followed
  by filter options.
  eg: "weka.filters.unsupervised.attribute.Remove -V -R 1,2"
 -D
  If set, classifier is run in debug mode and
  may output additional info to the console
 -W
  Full name of base classifier.
  (default: weka.classifiers.trees.J48)
 
 Options specific to classifier weka.classifiers.trees.J48:
 
 -U
  Use unpruned tree.
 -C <pruning confidence>
  Set confidence threshold for pruning.
  (default 0.25)
 -M <minimum number of instances>
  Set minimum number of instances per leaf.
  (default 2)
 -R
  Use reduced error pruning.
 -N <number of folds>
  Set number of folds for reduced error
  pruning. One fold is used as pruning set.
  (default 3)
 -B
  Use binary splits only.
 -S
  Don't perform subtree raising.
 -L
  Do not clean up after the tree has been built.
 -A
  Laplace smoothing for predicted probabilities.
 -Q <seed>
  Seed for random data shuffling (default 1).
版本:
$Revision: 1.28 $
作者:
Len Trigg (trigg@cs.waikato.ac.nz)
另请参阅:
  • 构造器详细资料

    • FilteredClassifier

      public FilteredClassifier()
      Default constructor.
  • 方法详细资料

    • globalInfo

      public String globalInfo()
      Returns a string describing this classifier
      返回:
      a description of the classifier suitable for displaying in the explorer/experimenter gui
    • graphType

      public int graphType()
      Returns the type of graph this classifier represents.
      指定者:
      graphType 在接口中 Drawable
      返回:
      the graph type of this classifier
    • graph

      public String graph() throws Exception
      Returns graph describing the classifier (if possible).
      指定者:
      graph 在接口中 Drawable
      返回:
      the graph of the classifier in dotty format
      抛出:
      Exception - if the classifier cannot be graphed
    • listOptions

      public Enumeration listOptions()
      Returns an enumeration describing the available options.
      指定者:
      listOptions 在接口中 OptionHandler
      覆盖:
      listOptions 在类中 SingleClassifierEnhancer
      返回:
      an enumeration of all the available options.
    • setOptions

      public void setOptions(String[] options) throws Exception
      Parses a given list of options.

      Valid options are:

       -F <filter specification>
        Full class name of filter to use, followed
        by filter options.
        eg: "weka.filters.unsupervised.attribute.Remove -V -R 1,2"
       -D
        If set, classifier is run in debug mode and
        may output additional info to the console
       -W
        Full name of base classifier.
        (default: weka.classifiers.trees.J48)
       
       Options specific to classifier weka.classifiers.trees.J48:
       
       -U
        Use unpruned tree.
       -C <pruning confidence>
        Set confidence threshold for pruning.
        (default 0.25)
       -M <minimum number of instances>
        Set minimum number of instances per leaf.
        (default 2)
       -R
        Use reduced error pruning.
       -N <number of folds>
        Set number of folds for reduced error
        pruning. One fold is used as pruning set.
        (default 3)
       -B
        Use binary splits only.
       -S
        Don't perform subtree raising.
       -L
        Do not clean up after the tree has been built.
       -A
        Laplace smoothing for predicted probabilities.
       -Q <seed>
        Seed for random data shuffling (default 1).
      指定者:
      setOptions 在接口中 OptionHandler
      覆盖:
      setOptions 在类中 SingleClassifierEnhancer
      参数:
      options - the list of options as an array of strings
      抛出:
      Exception - if an option is not supported
    • getOptions

      public String[] getOptions()
      Gets the current settings of the Classifier.
      指定者:
      getOptions 在接口中 OptionHandler
      覆盖:
      getOptions 在类中 SingleClassifierEnhancer
      返回:
      an array of strings suitable for passing to setOptions
    • filterTipText

      public String filterTipText()
      Returns the tip text for this property
      返回:
      tip text for this property suitable for displaying in the explorer/experimenter gui
    • setFilter

      public void setFilter(Filter filter)
      Sets the filter
      参数:
      filter - the filter with all options set.
    • getFilter

      public Filter getFilter()
      Gets the filter used.
      返回:
      the filter
    • getCapabilities

      public Capabilities getCapabilities()
      Returns default capabilities of the classifier.
      指定者:
      getCapabilities 在接口中 CapabilitiesHandler
      覆盖:
      getCapabilities 在类中 SingleClassifierEnhancer
      返回:
      the capabilities of this classifier
      另请参阅:
    • buildClassifier

      public void buildClassifier(Instances data) throws Exception
      Build the classifier on the filtered data.
      指定者:
      buildClassifier 在类中 Classifier
      参数:
      data - the training data
      抛出:
      Exception - if the classifier could not be built successfully
    • distributionForInstance

      public double[] distributionForInstance(Instance instance) throws Exception
      Classifies a given instance after filtering.
      覆盖:
      distributionForInstance 在类中 Classifier
      参数:
      instance - the instance to be classified
      返回:
      the class distribution for the given instance
      抛出:
      Exception - if instance could not be classified successfully
    • toString

      public String toString()
      Output a representation of this classifier
      覆盖:
      toString 在类中 Object
      返回:
      a representation of this classifier
    • getRevision

      public String getRevision()
      Returns the revision string.
      指定者:
      getRevision 在接口中 RevisionHandler
      覆盖:
      getRevision 在类中 Classifier
      返回:
      the revision
    • main

      public static void main(String[] argv)
      Main method for testing this class.
      参数:
      argv - should contain the following arguments: -t training file [-T test file] [-c class index]