weka.core.converters

Class LibSVMSaver

java.lang.Object

weka.core.converters.AbstractSaver

weka.core.converters.AbstractFileSaver

weka.core.converters.LibSVMSaver

All Implemented Interfaces:

java.io.Serializable, CapabilitiesHandler, BatchConverter, FileSourcedConverter, IncrementalConverter, Saver, EnvironmentHandler, OptionHandler, RevisionHandler

public class LibSVMSaver
extends AbstractFileSaver
implements BatchConverter, IncrementalConverter

Writes to a destination that is in libsvm format.

For more information about libsvm see:

http://www.csie.ntu.edu.tw/~cjlin/libsvm/

Valid options are:

 -i <the input file>
  The input file

 -o <the output file>
  The output file

 -c <class index>
  The class index
  (default: last)

Version:

$Revision: 8011 $

Author:

FracPete (fracpete at waikato dot ac dot nz)

See Also:

Saver, Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	FILE_EXTENSION the file extension

Fields inherited from interface weka.core.converters.Saver

BATCH, INCREMENTAL, NONE

Constructor Summary

Constructors

Constructor and Description
LibSVMSaver() Constructor

Method Summary

Modifier and Type	Method and Description
java.lang.String	classIndexTipText() Returns the tip text for this property
Capabilities	getCapabilities() Returns the Capabilities of this saver.
java.lang.String	getClassIndex() Get the index of the class attribute.
java.lang.String	getFileDescription() Returns a description of the file type.
java.lang.String[]	getOptions() returns the options of the current setup
java.lang.String	getRevision() Returns the revision string.
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[] args) Main method.
void	resetOptions() Resets the Saver
void	setClassIndex(java.lang.String value) Sets index of the class attribute.
void	setInstances(Instances instances) Sets instances that should be stored.
void	setOptions(java.lang.String[] options) Parses the options for this object.
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, getFileExtensions, getUseRelativePath, getWriter, resetWriter, retrieveDir, retrieveFile, runFileSaver, setDestination, setDestination, setDir, setDirAndPrefix, setEnvironment, setFile, setFilePrefix, setUseRelativePath, useRelativePathTipText

Methods inherited from class weka.core.converters.AbstractSaver

getInstances, getWriteMode, resetStructure, setRetrieval, setStructure

Methods inherited from class java.lang.Object

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

Field Detail

FILE_EXTENSION

public static java.lang.String FILE_EXTENSION

the file extension

Constructor Detail

LibSVMSaver

public LibSVMSaver()

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

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.

getOptions

public java.lang.String[] getOptions()

returns the options of the current setup

Specified by:

getOptions in interface OptionHandler

Overrides:

getOptions in class AbstractFileSaver

Returns:

the current options

setOptions

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

Parses the options for this object.

Valid options are:

 -i <the input file>
  The input file

 -o <the output file>
  The output file

 -c <class index>
  The class index
  (default: last)

Specified by:

setOptions in interface OptionHandler

Overrides:

setOptions in class AbstractFileSaver

Parameters:

options - the options to use

Throws:

java.lang.Exception - if setting of options fails

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

classIndexTipText

public java.lang.String classIndexTipText()

Returns the tip text for this property

Returns:

tip text for this property suitable for displaying in the explorer/experimenter gui

getClassIndex

public java.lang.String getClassIndex()

Get the index of the class attribute.

Returns:

the index of the class attribute

setClassIndex

public void setClassIndex(java.lang.String value)

Sets index of the class attribute.

Parameters:

value - the index of the class attribute

getCapabilities

public Capabilities getCapabilities()

Returns the Capabilities of this saver.

Specified by:

getCapabilities in interface CapabilitiesHandler

Overrides:

getCapabilities in class AbstractSaver

Returns:

the capabilities of this object

See Also:

Capabilities

setInstances

public void setInstances(Instances instances)

Sets instances that should be stored.

Specified by:

setInstances in interface Saver

Overrides:

setInstances in class AbstractSaver

Parameters:

instances - the instances

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

getRevision

public java.lang.String getRevision()

Returns the revision string.

Specified by:

getRevision in interface RevisionHandler

Returns:

the revision

main

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

Main method.

Parameters:

args - should contain the options of a Saver.