weka.core.converters
Class C45Saver

java.lang.Object
  weka.core.converters.AbstractSaver
      weka.core.converters.AbstractFileSaver
          weka.core.converters.C45Saver

All Implemented Interfaces:

BatchConverter, FileSourcedConverter, IncrementalConverter, OptionHandler, Saver, java.io.Serializable

public class C45Saver

extends AbstractFileSaver

implements BatchConverter, IncrementalConverter, OptionHandler

Writes to a destination in the format used by the C4.5 slgorithm. The output are two files: *.names, *.data Valid options: -i input arff file
The input filw in ARFF format.

-o the output file
The output file. The prefix of the output file is sufficient.

-c class index
The index of the class attribute. first and last are valid as well (default: last).

Version:

$Revision: 1.2 $

Author:

Stefan Mutter (mutter@cs.waikato.ac.nz)

See Also:

Saver, Serialized Form

Field Summary

Fields inherited from interface weka.core.converters.Saver

BATCH, INCREMENTAL, NONE

Constructor Summary

C45Saver()
Constructor

Method Summary

java.lang.String	getFileDescription() Returns a description of the file type.
java.lang.String[]	getOptions() Gets the current settings of the C45Saver object.
java.lang.String	globalInfo() Returns a string describing this Saver
java.util.Enumeration	listOptions() Returns an enumeration describing the available options.
static void	main(java.lang.String[] options) Main method.
void	resetOptions() Resets the Saver
void	setOptions(java.lang.String[] options) Parses a given list of options.
void	writeBatch() Writes a Batch of instances
void	writeIncremental(Instance inst) Saves an instances incrementally.

Methods inherited from class weka.core.converters.AbstractFileSaver

cancel, filePrefix, getFileExtension, getWriter, resetWriter, retrieveDir, retrieveFile, setDestination, setDestination, setDir, setDirAndPrefix, setFile, setFilePrefix

Methods inherited from class weka.core.converters.AbstractSaver

getInstances, getWriteMode, resetStructure, setInstances, setRetrieval, setStructure

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

C45Saver

public C45Saver()

Constructor

Method Detail

globalInfo

public java.lang.String globalInfo()

Returns a string describing this Saver

Returns:

a description of the Saver suitable for displaying in the explorer/experimenter gui

getFileDescription

public java.lang.String getFileDescription()

Returns a description of the file type.

Specified by:

getFileDescription in interface FileSourcedConverter

Specified by:

getFileDescription in class AbstractFileSaver

Returns:

a short file description

resetOptions

public void resetOptions()

Resets the Saver

Overrides:

resetOptions in class AbstractFileSaver

writeIncremental

public void writeIncremental(Instance inst)
                      throws java.io.IOException

Saves an instances incrementally. Structure has to be set by using the setStructure() method or setInstances() method.

Specified by:

writeIncremental in interface Saver

Overrides:

writeIncremental in class AbstractSaver

Parameters:

inst - the instance to save

Throws:

java.io.IOException - throws IOEXception if an instance cannot be saved incrementally.

writeBatch

public void writeBatch()
                throws java.io.IOException

Writes a Batch of instances

Specified by:

writeBatch in interface Saver

Specified by:

writeBatch in class AbstractSaver

Throws:

java.io.IOException - throws IOException if saving in batch mode is not possible

listOptions

public java.util.Enumeration listOptions()

Returns an enumeration describing the available options.

Specified by:

listOptions in interface OptionHandler

Overrides:

listOptions in class AbstractFileSaver

Returns:

an enumeration of all the available options.

setOptions

public void setOptions(java.lang.String[] options)
                throws java.lang.Exception

Parses a given list of options. Valid option is:

-i input arff file
The input filw in ARFF format.

-o the output file
The output file. The prefix of the output file is sufficient.

-c class index
The index of the class attribute. first and last are valid as well (default: last).

Specified by:

setOptions in interface OptionHandler

Overrides:

setOptions in class AbstractFileSaver

Parameters:

options - the list of options as an array of strings

Throws:

java.lang.Exception - if an option is not supported

getOptions

public java.lang.String[] getOptions()

Gets the current settings of the C45Saver object.

Specified by:

getOptions in interface OptionHandler

Overrides:

getOptions in class AbstractFileSaver

Returns:

an array of strings suitable for passing to setOptions

main

public static void main(java.lang.String[] options)

Main method.

Parameters:

options - should contain the options of a Saver.