类 Randomize

java.lang.Object
weka.filters.Filter
weka.filters.unsupervised.instance.Randomize
所有已实现的接口:
Serializable, CapabilitiesHandler, OptionHandler, RevisionHandler, UnsupervisedFilter

public class Randomize extends Filter implements UnsupervisedFilter, OptionHandler
Randomly shuffles the order of instances passed through it. The random number generator is reset with the seed value whenever a new set of instances is passed in.

Valid options are:

 -S <num>
  Specify the random number seed (default 42)
版本:
$Revision: 5548 $
作者:
Len Trigg (trigg@cs.waikato.ac.nz)
另请参阅:
  • 构造器详细资料

    • Randomize

      public Randomize()
  • 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
    • 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:

       -S <num>
        Specify the random number seed (default 42)
      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 filter.
      指定者:
      getOptions 在接口中 OptionHandler
      返回:
      an array of strings suitable for passing to setOptions
    • randomSeedTipText

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

      public int getRandomSeed()
      Get the random number generator seed value.
      返回:
      random number generator seed value.
    • setRandomSeed

      public void setRandomSeed(int newRandomSeed)
      Set the random number generator seed value.
      参数:
      newRandomSeed - value to use as the random number generator seed.
    • getCapabilities

      public Capabilities getCapabilities()
      Returns the Capabilities of this filter.
      指定者:
      getCapabilities 在接口中 CapabilitiesHandler
      覆盖:
      getCapabilities 在类中 Filter
      返回:
      the capabilities of this object
      另请参阅:
    • setInputFormat

      public boolean setInputFormat(Instances instanceInfo) throws Exception
      Sets the format of the input instances.
      覆盖:
      setInputFormat 在类中 Filter
      参数:
      instanceInfo - an Instances object containing the input instance structure (any instances contained in the object are ignored - only the structure is required).
      返回:
      true if the outputFormat may be collected immediately
      抛出:
      Exception - if format cannot be processed
    • input

      public boolean input(Instance instance)
      Input an instance for filtering. Filter requires all training instances be read before producing output.
      覆盖:
      input 在类中 Filter
      参数:
      instance - the input instance
      返回:
      true if the filtered instance may now be collected with output().
      抛出:
      IllegalStateException - if no input structure has been defined
    • batchFinished

      public boolean batchFinished()
      Signify that this batch of input to the filter is finished. If the filter requires all instances prior to filtering, output() may now be called to retrieve the filtered instances. Any subsequent instances filtered should be filtered based on setting obtained from the first batch (unless the setInputFormat has been re-assigned or new options have been set). This implementation randomizes all the instances received in the batch.
      覆盖:
      batchFinished 在类中 Filter
      返回:
      true if there are instances pending output
      抛出:
      IllegalStateException - if no input format has been set.
    • getRevision

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

      public static void main(String[] argv)
      Main method for testing this class.
      参数:
      argv - should contain arguments to the filter: use -h for help