weka.filters.unsupervised.attribute

## Class AbstractTimeSeries

- java.lang.Object
- - weka.filters.Filter
  - - weka.filters.unsupervised.attribute.AbstractTimeSeries

- All Implemented Interfaces:
    java.io.Serializable, CapabilitiesHandler, CapabilitiesIgnorer, OptionHandler, RevisionHandler, UnsupervisedFilter
  Direct Known Subclasses:
    TimeSeriesTranslate

      public abstract class AbstractTimeSeries
      extends Filter
      implements UnsupervisedFilter, OptionHandler

  An abstract instance filter that assumes instances form time-series data and performs some merging of attribute values in the current instance with attribute attribute values of some previous (or future) instance. For instances where the desired value is unknown either the instance may be dropped, or missing values used.

  Valid filter-specific options are:

  -R index1,index2-index4,...
  Specify list of columns to calculate new values for. First and last are valid indexes. (default none)

  -V
  Invert matching sense (i.e. calculate for all non-specified columns)

  -I num
  The number of instances forward to merge values between. A negative number indicates taking values from a past instance. (default -1)

  -M
  For instances at the beginning or end of the dataset where the translated values are not known, remove those instances (default is to use missing values).

  Version:
    $Revision: 10215 $
  Author:
    Len Trigg (trigg@cs.waikato.ac.nz)
  See Also:
    Serialized Form

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `AbstractTimeSeries()`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `java.lang.String` | `attributeIndicesTipText()` Returns the tip text for this property
    `boolean` | `batchFinished()` Signifies that this batch of input to the filter is finished.
    `java.lang.String` | `fillWithMissingTipText()` Returns the tip text for this property
    `java.lang.String` | `getAttributeIndices()` Get the current range selection
    `boolean` | `getFillWithMissing()` Gets whether missing values should be used rather than removing instances where the translated value is not known (due to border effects).
    `int` | `getInstanceRange()` Gets the number of instances forward to translate values between.
    `boolean` | `getInvertSelection()` Get whether the supplied columns are to be removed or kept
    `java.lang.String[]` | `getOptions()` Gets the current settings of the filter.
    `boolean` | `input(Instance instance)` Input an instance for filtering.
    `java.lang.String` | `instanceRangeTipText()` Returns the tip text for this property
    `java.lang.String` | `invertSelectionTipText()` Returns the tip text for this property
    `java.util.Enumeration<Option>` | `listOptions()` Returns an enumeration describing the available options.
    `void` | `setAttributeIndices(java.lang.String rangeList)` Set which attributes are to be copied (or kept if invert is true)
    `void` | `setAttributeIndicesArray(int[] attributes)` Set which attributes are to be copied (or kept if invert is true)
    `void` | `setFillWithMissing(boolean newFillWithMissing)` Sets whether missing values should be used rather than removing instances where the translated value is not known (due to border effects).
    `boolean` | `setInputFormat(Instances instanceInfo)` Sets the format of the input instances.
    `void` | `setInstanceRange(int newInstanceRange)` Sets the number of instances forward to translate values between.
    `void` | `setInvertSelection(boolean invert)` Set whether selected columns should be removed or kept.
    `void` | `setOptions(java.lang.String[] options)` Parses a given list of options controlling the behaviour of this object.

    - ### Methods inherited from class weka.filters.Filter

      `batchFilterFile, debugTipText, doNotCheckCapabilitiesTipText, filterFile, getCapabilities, getCapabilities, getDebug, getDoNotCheckCapabilities, getOutputFormat, getRevision, isFirstBatchDone, isNewBatch, isOutputFormatDefined, main, makeCopies, makeCopy, mayRemoveInstanceAfterFirstBatchDone, numPendingOutput, output, outputPeek, runFilter, setDebug, setDoNotCheckCapabilities, toString, useFilter, wekaStaticWrapper`

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

- - ### Constructor Detail

    - #### AbstractTimeSeries

          public AbstractTimeSeries()

  - ### Method Detail

    - #### listOptions

          public java.util.Enumeration<Option> listOptions()

      Returns an enumeration describing the available options.
      Specified by:
        `listOptions` in interface `OptionHandler`
      Overrides:
        `listOptions` in class `Filter`
      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 controlling the behaviour of this object. Valid options are:

      -R index1,index2-index4,...
      Specify list of columns to copy. First and last are valid indexes. (default none)

      -V
      Invert matching sense (i.e. calculate for all non-specified columns)

      -I num
      The number of instances forward to translate values between. A negative number indicates taking values from a past instance. (default -1)

      -M
      For instances at the beginning or end of the dataset where the translated values are not known, remove those instances (default is to use missing values).

      Specified by:
        `setOptions` in interface `OptionHandler`
      Overrides:
        `setOptions` in class `Filter`
      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 filter.
      Specified by:
        `getOptions` in interface `OptionHandler`
      Overrides:
        `getOptions` in class `Filter`
      Returns:
        an array of strings suitable for passing to setOptions

    - #### 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 format couldn't be set successfully

    - #### input

          public boolean input(Instance instance)
                        throws java.lang.Exception

      Input an instance for filtering. Ordinarily the instance is processed and made available for output immediately. Some filters require all instances be read before producing output.
      Overrides:
        `input` in class `Filter`
      Parameters:
        `instance` - the input instance
      Returns:
        true if the filtered instance may now be collected with output().
      Throws:
        `java.lang.Exception` - if the input instance was not of the correct format or if there was a problem with the filtering.

    - #### batchFinished

          public boolean batchFinished()

      Signifies 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

    - #### fillWithMissingTipText

          public java.lang.String fillWithMissingTipText()

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

    - #### getFillWithMissing

          public boolean getFillWithMissing()

      Gets whether missing values should be used rather than removing instances where the translated value is not known (due to border effects).
      Returns:
        true if so

    - #### setFillWithMissing

          public void setFillWithMissing(boolean newFillWithMissing)

      Sets whether missing values should be used rather than removing instances where the translated value is not known (due to border effects).
      Parameters:
        `newFillWithMissing` - true if so

    - #### instanceRangeTipText

          public java.lang.String instanceRangeTipText()

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

    - #### getInstanceRange

          public int getInstanceRange()

      Gets the number of instances forward to translate values between. A negative number indicates taking values from a past instance.
      Returns:
        Value of InstanceRange.

    - #### setInstanceRange

          public void setInstanceRange(int newInstanceRange)

      Sets the number of instances forward to translate values between. A negative number indicates taking values from a past instance.
      Parameters:
        `newInstanceRange` - Value to assign to InstanceRange.

    - #### invertSelectionTipText

          public java.lang.String invertSelectionTipText()

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

    - #### getInvertSelection

          public boolean getInvertSelection()

      Get whether the supplied columns are to be removed or kept
      Returns:
        true if the supplied columns will be kept

    - #### setInvertSelection

          public void setInvertSelection(boolean invert)

      Set whether selected columns should be removed or kept. If true the selected columns are kept and unselected columns are copied. If false selected columns are copied and unselected columns are kept.
      Parameters:
        `invert` - the new invert setting

    - #### attributeIndicesTipText

          public java.lang.String attributeIndicesTipText()

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

    - #### getAttributeIndices

          public java.lang.String getAttributeIndices()

      Get the current range selection
      Returns:
        a string containing a comma separated list of ranges

    - #### setAttributeIndices

          public void setAttributeIndices(java.lang.String rangeList)

      Set which attributes are to be copied (or kept if invert is true)
      Parameters:
        `rangeList` - a string representing the list of attributes. Since the string will typically come from a user, attributes are indexed from 1.
        eg: first-3,5,6-last

    - #### setAttributeIndicesArray

          public void setAttributeIndicesArray(int[] attributes)

      Set which attributes are to be copied (or kept if invert is true)
      Parameters:
        `attributes` - an array containing indexes of attributes to select. Since the array will typically come from a program, attributes are indexed from 0.