Package weka.filters.unsupervised.attribute

Class TimeSeriesDelta

java.lang.Object
weka.filters.Filter
weka.filters.unsupervised.attribute.AbstractTimeSeries
weka.filters.unsupervised.attribute.TimeSeriesTranslate
weka.filters.unsupervised.attribute.TimeSeriesDelta
All Implemented Interfaces:
Serializable, CapabilitiesHandler, CapabilitiesIgnorer, CommandlineRunnable, OptionHandler, RevisionHandler, WeightedAttributesHandler, WeightedInstancesHandler, UnsupervisedFilter
public class TimeSeriesDelta extends TimeSeriesTranslate
An instance filter that assumes instances form time-series data and replaces attribute values in the current instance with the difference between the current value and the equivalent attribute attribute value of some previous (or future) instance. For instances where the time-shifted value is unknown either the instance may be dropped, or missing values used. Skips the class attribute if it is set.

Valid options are: 

 -R <index1,index2-index4,...>
  Specify list of columns to translate in time. 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).
Version:
$Revision: 8034 $
Author:
Len Trigg (trigg@cs.waikato.ac.nz)
See Also:

  • Constructor Details

    • TimeSeriesDelta

      public TimeSeriesDelta()

  • Method Details

    • globalInfo

      public String globalInfo()
      Returns a string describing this classifier
      Overrides:
      globalInfo in class TimeSeriesTranslate
      Returns:
      a description of the classifier 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 TimeSeriesTranslate
      Returns:
      the capabilities of this object
      See Also:

    • setInputFormat

      public boolean setInputFormat(Instances instanceInfo) throws Exception
      Sets the format of the input instances.
      Overrides:
      setInputFormat in class TimeSeriesTranslate
      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:
      UnsupportedAttributeTypeException - if selected attributes are not numeric.
      Exception - if the format couldn't be set successfully

    • getRevision

      public String getRevision()
      Returns the revision string.
      Specified by:
      getRevision in interface RevisionHandler
      Overrides:
      getRevision in class TimeSeriesTranslate
      Returns:
      the revision

    • main

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