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## weka.filters.unsupervised.attribute
Class PropositionalToMultiInstance

    java.lang.Object
      weka.filters.Filter
          weka.filters.unsupervised.attribute.PropositionalToMultiInstance

All Implemented Interfaces:
  java.io.Serializable, CapabilitiesHandler, OptionHandler, RevisionHandler, UnsupervisedFilter

    public class PropositionalToMultiInstance

extends Filter
implements OptionHandler, UnsupervisedFilter

Converts the propositional instance dataset into multi-instance dataset (with relational attribute). When normalize or standardize a multi-instance dataset, a MIToSingleInstance filter can be applied first to convert the multi-instance dataset into propositional instance dataset. After normalization or standardization, may use this PropositionalToMultiInstance filter to convert the data back to multi-instance format.
Note: the first attribute of the original propositional instance dataset must be a nominal attribute which is expected to be bagId attribute.

Valid options are:

     -S <num>
      The seed for the randomization of the order of bags. (default 1)

     -R
      Randomizes the order of the produced bags after the generation. (default off)

Version:
  $Revision: 5547 $
Author:
  Lin Dong (ld21@cs.waikato.ac.nz)
See Also:
  `MultiInstanceToPropositional`, Serialized Form

Constructor Summary
`PropositionalToMultiInstance()`

Method Summary
`boolean` | `batchFinished()` Signify that this batch of input to the filter is finished.
`Capabilities` | `getCapabilities()` Returns the Capabilities of this filter.
`java.lang.String[]` | `getOptions()` Gets the current settings of the classifier.
`boolean` | `getRandomize()` Gets whether the order of the generated is randomized
`java.lang.String` | `getRevision()` Returns the revision string.
`int` | `getSeed()` Returns the current seed value for randomizing the order of the generated data
`java.lang.String` | `globalInfo()` Returns a string describing this filter
`java.util.Enumeration` | `listOptions()` Returns an enumeration describing the available options
`static void` | `main(java.lang.String[] args)` Main method for running this filter.
`java.lang.String` | `randomizeTipText()` Returns the tip text for this property
`java.lang.String` | `seedTipText()` Returns the tip text for this property
`boolean` | `setInputFormat(Instances instanceInfo)` Sets the format of the input instances.
`void` | `setOptions(java.lang.String[] options)` Parses a given list of options.
`void` | `setRandomize(boolean value)` Sets whether the order of the generated data is randomized
`void` | `setSeed(int value)` Sets the new seed for randomizing the order of the generated data

Methods inherited from class weka.filters.Filter
`batchFilterFile, filterFile, getCapabilities, getOutputFormat, input, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, numPendingOutput, output, outputPeek, toString, useFilter, wekaStaticWrapper`

Methods inherited from class java.lang.Object
`equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### PropositionalToMultiInstance

    public PropositionalToMultiInstance()

Method Detail

### globalInfo

    public java.lang.String globalInfo()

  Returns a string describing this filter

  Returns:
    a description of the filter 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`
  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 options are:

       -S <num>
        The seed for the randomization of the order of bags. (default 1)

       -R
        Randomizes the order of the produced bags after the generation. (default off)

  Specified by:
    `setOptions` in interface `OptionHandler`
  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 classifier.

  Specified by:
    `getOptions` in interface `OptionHandler`
  Returns:
    an array of strings suitable for passing to setOptions

### seedTipText

    public java.lang.String seedTipText()

  Returns the tip text for this property

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

### setSeed

    public void setSeed(int value)

  Sets the new seed for randomizing the order of the generated data

  Parameters:
    `value` - the new seed value

### getSeed

    public int getSeed()

  Returns the current seed value for randomizing the order of the generated data

  Returns:
    the current seed value

### setRandomize

    public void setRandomize(boolean value)

  Sets whether the order of the generated data is randomized

  Parameters:
    `value` - whether to randomize or not

### getRandomize

    public boolean getRandomize()

  Gets whether the order of the generated is randomized

  Returns:
    true if the order is randomized

### randomizeTipText

    public java.lang.String randomizeTipText()

  Returns the tip text for this property

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

### getCapabilities

    public Capabilities getCapabilities()

  Returns the Capabilities of this filter.

  Specified by:
    `getCapabilities` in interface `CapabilitiesHandler`
  Overrides:
    `getCapabilities` in class `Filter`
  Returns:
    the capabilities of this object
  See Also:
    `Capabilities`

### setInputFormat

    public boolean setInputFormat(Instances instanceInfo)
                           throws java.lang.Exception

  Sets the format of the input instances.

  Overrides:
    `setInputFormat` in class `Filter`
  Parameters:
    `instanceInfo` - an Instances object containing the input instance structure (any instances contained in the object are ignored - only the structure is required).
  Returns:
    true if the outputFormat may be collected immediately
  Throws:
    `java.lang.Exception` - if the input format can't be set successfully

### 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.

  Overrides:
    `batchFinished` in class `Filter`
  Returns:
    true if there are instances pending output
  Throws:
    `java.lang.IllegalStateException` - if no input structure has been defined

### getRevision

    public java.lang.String getRevision()

  Returns the revision string.

  Specified by:
    `getRevision` in interface `RevisionHandler`
  Overrides:
    `getRevision` in class `Filter`
  Returns:
    the revision

### main

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

  Main method for running this filter.

  Parameters:
    `args` - should contain arguments to the filter: use -h for help

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