类 BayesNetEstimator

java.lang.Object
weka.classifiers.bayes.net.estimate.BayesNetEstimator
所有已实现的接口:
Serializable, OptionHandler, RevisionHandler
直接已知子类:
MultiNomialBMAEstimator, SimpleEstimator

public class BayesNetEstimator extends Object implements OptionHandler, Serializable, RevisionHandler
BayesNetEstimator is the base class for estimating the conditional probability tables of a Bayes network once the structure has been learned.

Valid options are:

 -A <alpha>
  Initial count (alpha)
 
版本:
$Revision: 1.4 $
作者:
Remco Bouckaert (rrb@xm.co.nz)
另请参阅:
  • 构造器详细资料

    • BayesNetEstimator

      public BayesNetEstimator()
  • 方法详细资料

    • estimateCPTs

      public void estimateCPTs(BayesNet bayesNet) throws Exception
      estimateCPTs estimates the conditional probability tables for the Bayes Net using the network structure.
      参数:
      bayesNet - the bayes net to use
      抛出:
      Exception - always throws an exception, since subclass needs to be used
    • updateClassifier

      public void updateClassifier(BayesNet bayesNet, Instance instance) throws Exception
      Updates the classifier with the given instance.
      参数:
      bayesNet - the bayes net to use
      instance - the new training instance to include in the model
      抛出:
      Exception - always throws an exception, since subclass needs to be used
    • distributionForInstance

      public double[] distributionForInstance(BayesNet bayesNet, Instance instance) throws Exception
      Calculates the class membership probabilities for the given test instance.
      参数:
      bayesNet - the bayes net to use
      instance - the instance to be classified
      返回:
      predicted class probability distribution
      抛出:
      Exception - always throws an exception, since subclass needs to be used
    • initCPTs

      public void initCPTs(BayesNet bayesNet) throws Exception
      initCPTs reserves space for CPTs and set all counts to zero
      参数:
      bayesNet - the bayes net to use
      抛出:
      Exception - always throws an exception, since subclass needs to be used
    • listOptions

      public Enumeration listOptions()
      Returns an enumeration describing the available options
      指定者:
      listOptions 在接口中 OptionHandler
      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:

       -A <alpha>
        Initial count (alpha)
       
      指定者:
      setOptions 在接口中 OptionHandler
      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
      返回:
      an array of strings suitable for passing to setOptions
    • setAlpha

      public void setAlpha(double fAlpha)
      Set prior used in probability table estimation
      参数:
      fAlpha - representing prior
    • getAlpha

      public double getAlpha()
      Get prior used in probability table estimation
      返回:
      prior
    • alphaTipText

      public String alphaTipText()
      返回:
      a string to describe the Alpha option.
    • globalInfo

      public String globalInfo()
      This will return a string describing the class.
      返回:
      The string.
    • getRevision

      public String getRevision()
      Returns the revision string.
      指定者:
      getRevision 在接口中 RevisionHandler
      返回:
      the revision