类 DecisionStump

java.lang.Object
weka.classifiers.Classifier
weka.classifiers.trees.DecisionStump
所有已实现的接口:
Serializable, Cloneable, Sourcable, CapabilitiesHandler, OptionHandler, RevisionHandler, WeightedInstancesHandler

public class DecisionStump extends Classifier implements WeightedInstancesHandler, Sourcable
Class for building and using a decision stump. Usually used in conjunction with a boosting algorithm. Does regression (based on mean-squared error) or classification (based on entropy). Missing is treated as a separate value.

Typical usage:

java weka.classifiers.meta.LogitBoost -I 100 -W weka.classifiers.trees.DecisionStump -t training_data

Valid options are:

 -D
  If set, classifier is run in debug mode and
  may output additional info to the console
版本:
$Revision: 5535 $
作者:
Eibe Frank (eibe@cs.waikato.ac.nz)
另请参阅:
  • 构造器详细资料

    • DecisionStump

      public DecisionStump()
  • 方法详细资料

    • globalInfo

      public String globalInfo()
      Returns a string describing classifier
      返回:
      a description suitable for displaying in the explorer/experimenter gui
    • 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 Classifier
      返回:
      the capabilities of this classifier
      另请参阅:
    • buildClassifier

      public void buildClassifier(Instances instances) throws Exception
      Generates the classifier.
      指定者:
      buildClassifier 在类中 Classifier
      参数:
      instances - set of instances serving as training data
      抛出:
      Exception - if the classifier has not been generated successfully
    • distributionForInstance

      public double[] distributionForInstance(Instance instance) throws Exception
      Calculates the class membership probabilities for the given test instance.
      覆盖:
      distributionForInstance 在类中 Classifier
      参数:
      instance - the instance to be classified
      返回:
      predicted class probability distribution
      抛出:
      Exception - if distribution can't be computed
    • toSource

      public String toSource(String className) throws Exception
      Returns the decision tree as Java source code.
      指定者:
      toSource 在接口中 Sourcable
      参数:
      className - the classname of the generated code
      返回:
      the tree as Java source code
      抛出:
      Exception - if something goes wrong
    • toString

      public String toString()
      Returns a description of the classifier.
      覆盖:
      toString 在类中 Object
      返回:
      a description of the classifier as a string.
    • 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 - the options