Package weka.filters.unsupervised.attribute

Class JoinAttributes

  • All Implemented Interfaces:
    Serializable, weka.core.CapabilitiesHandler, weka.core.CapabilitiesIgnorer, weka.core.CommandlineRunnable, weka.core.OptionHandler, weka.core.RevisionHandler, weka.filters.UnsupervisedFilter
    public class JoinAttributes
extends weka.filters.SimpleBatchFilter
implements weka.filters.UnsupervisedFilter
    A simple filter that joins several attributes into a single STRING one, with a user defined string acting as 'glue'.

    Valid options are: 

     -D
  Turns on output of debugging information.
     -R <range>
  The range of the attributes to combine.
  (default: first-last).
     -glue <string>
  The 'glue' string to insert between the attribute values.
  (default: none).
    Author:
    fracpete (fracpete at waikato dot ac dot nz)
    See Also:
    Serialized Form

    • Field Summary

      Fields 
      Modifier and Type Field Description
      protected weka.core.Range m_AttributeRange
      the range of the attributes to work on.
      protected String m_Glue
      the glue to use for joining the attributes.
      protected HashSet<Integer> m_Hashed
      the hashed indices.
      protected int[] m_Indices
      the indices to work on.

      • Fields inherited from class weka.filters.Filter

        m_Debug, m_DoNotCheckCapabilities, m_FirstBatchDone, m_InputRelAtts, m_InputStringAtts, m_NewBatch, m_OutputRelAtts, m_OutputStringAtts

    • Constructor Summary

      Constructors 
      Constructor Description
      JoinAttributes()  

    • Method Summary

      All Methods Static Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      String attributeRangeTipText()
      Returns the tip text for this property.
      protected weka.core.Instances determineOutputFormat​(weka.core.Instances inputFormat)
      Determines the output format based on the input format and returns this.
      String getAttributeRange()
      Returns the 1-based range of the attributes to combine.
      weka.core.Capabilities getCapabilities()
      Returns the Capabilities of this filter.
      String getGlue()
      Returns the glue to use.
      String[] getOptions()
      Gets the current settings of the filter.
      String getRevision()
      Returns the revision string.
      String globalInfo()
      Returns a string describing this classifier.
      String glueTipText()
      Returns the tip text for this property.
      Enumeration listOptions()
      Returns an enumeration describing the available options.
      static void main​(String[] args)
      Main method for testing this class.
      protected weka.core.Instances process​(weka.core.Instances instances)
      Processes the given data (may change the provided dataset) and returns the modified version.
      void setAttributeRange​(String value)
      Sets the range (1-based) of the attributes to combine.
      void setGlue​(String value)
      Sets the glue to use.
      void setOptions​(String[] options)
      Parses a list of options for this object.

      • Methods inherited from class weka.filters.SimpleBatchFilter

        allowAccessToFullInputFormat, batchFinished, hasImmediateOutputFormat, input, input

      • Methods inherited from class weka.filters.SimpleFilter

        reset, setInputFormat

      • Methods inherited from class weka.filters.Filter

        batchFilterFile, bufferInput, copyValues, copyValues, debugTipText, doNotCheckCapabilitiesTipText, filterFile, flushInput, getCapabilities, getCopyOfInputFormat, getDebug, getDoNotCheckCapabilities, getInputFormat, getOutputFormat, initInputLocators, initOutputLocators, inputFormatPeek, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, mayRemoveInstanceAfterFirstBatchDone, numPendingOutput, output, outputFormatPeek, outputPeek, postExecution, preExecution, push, push, resetQueue, run, runFilter, setDebug, setDoNotCheckCapabilities, setOutputFormat, testInputFormat, toString, useFilter, wekaStaticWrapper

    • Field Detail

      • m_AttributeRange

        protected weka.core.Range m_AttributeRange
        the range of the attributes to work on.

      • m_Glue

        protected String m_Glue
        the glue to use for joining the attributes.

      • m_Indices

        protected int[] m_Indices
        the indices to work on.

    • Constructor Detail

      • JoinAttributes

        public JoinAttributes()

    • Method Detail

      • globalInfo

        public String globalInfo()
        Returns a string describing this classifier.
        Specified by:
        globalInfo in class weka.filters.SimpleFilter
        Returns:
        a description of the classifier suitable for displaying in the explorer/experimenter gui

      • listOptions

        public Enumeration listOptions()
        Returns an enumeration describing the available options.
        Specified by:
        listOptions in interface weka.core.OptionHandler
        Overrides:
        listOptions in class weka.filters.Filter
        Returns:
        an enumeration of all the available options.

      • setOptions

        public void setOptions​(String[] options)
                throws Exception
        Parses a list of options for this object. Also resets the state of the filter (this reset doesn't affect the options).
        Specified by:
        setOptions in interface weka.core.OptionHandler
        Overrides:
        setOptions in class weka.filters.Filter
        Parameters:
        options - the list of options as an array of strings
        Throws:
        Exception - if an option is not supported
        See Also:
        SimpleFilter.reset()

      • getOptions

        public String[] getOptions()
        Gets the current settings of the filter.
        Specified by:
        getOptions in interface weka.core.OptionHandler
        Overrides:
        getOptions in class weka.filters.Filter
        Returns:
        an array of strings suitable for passing to setOptions

      • setAttributeRange

        public void setAttributeRange​(String value)
        Sets the range (1-based) of the attributes to combine.
        Parameters:
        value - the range (1-based)

      • getAttributeRange

        public String getAttributeRange()
        Returns the 1-based range of the attributes to combine.
        Returns:
        the range (1-based)

      • attributeRangeTipText

        public String attributeRangeTipText()
        Returns the tip text for this property.
        Returns:
        tip text for this property suitable for displaying in the GUI or for listing the options.

      • setGlue

        public void setGlue​(String value)
        Sets the glue to use. Tab character can be provided as escaped sequence ("\t").
        Parameters:
        value - the glue
        See Also:
        Utils.unbackQuoteChars(String)

      • getGlue

        public String getGlue()
        Returns the glue to use.
        Returns:
        the glue
        See Also:
        Utils.backQuoteChars(String)

      • glueTipText

        public String glueTipText()
        Returns the tip text for this property.
        Returns:
        tip text for this property suitable for displaying in the GUI or for listing the options.

      • getCapabilities

        public weka.core.Capabilities getCapabilities()
        Returns the Capabilities of this filter. Derived filters have to override this method to enable capabilities.
        Specified by:
        getCapabilities in interface weka.core.CapabilitiesHandler
        Overrides:
        getCapabilities in class weka.filters.Filter
        Returns:
        the capabilities of this object
        See Also:
        Capabilities

      • determineOutputFormat

        protected weka.core.Instances determineOutputFormat​(weka.core.Instances inputFormat)
                                             throws Exception
        Determines the output format based on the input format and returns this. In case the output format cannot be returned immediately, i.e., hasImmediateOutputFormat() returns false, then this method will called from batchFinished() after the call of preprocess(Instances), in which, e.g., statistics for the actual processing step can be gathered.
        Specified by:
        determineOutputFormat in class weka.filters.SimpleFilter
        Parameters:
        inputFormat - the input format to base the output format on
        Returns:
        the output format
        Throws:
        Exception - in case the determination goes wrong

      • process

        protected weka.core.Instances process​(weka.core.Instances instances)
                               throws Exception
        Processes the given data (may change the provided dataset) and returns the modified version. This method is called in batchFinished().
        Specified by:
        process in class weka.filters.SimpleFilter
        Parameters:
        instances - the data to process
        Returns:
        the modified data
        Throws:
        Exception - in case the processing goes wrong
        See Also:
        SimpleBatchFilter.batchFinished()

      • getRevision

        public String getRevision()
        Returns the revision string.
        Specified by:
        getRevision in interface weka.core.RevisionHandler
        Overrides:
        getRevision in class weka.filters.Filter
        Returns:
        the revision

      • main

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