Class PAA
- java.lang.Object
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- weka.filters.Filter
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- weka.filters.SimpleFilter
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- weka.filters.SimpleStreamFilter
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- weka.filters.unsupervised.attribute.PAA
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- All Implemented Interfaces:
Serializable
,weka.core.CapabilitiesHandler
,weka.core.CapabilitiesIgnorer
,weka.core.CommandlineRunnable
,weka.core.OptionHandler
,weka.core.RevisionHandler
,weka.filters.StreamableFilter
,weka.filters.UnsupervisedFilter
public class PAA extends weka.filters.SimpleStreamFilter implements weka.filters.UnsupervisedFilter
Valid options are:
-nth <int> Only every n-th point will be output (>0). (default: 1)
- Version:
- $Revision$
- Author:
- fracpete (fracpete at waikato dot ac dot nz)
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description protected int
m_windows
number of windows.
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Constructor Summary
Constructors Constructor Description PAA()
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description protected weka.core.Instances
determineOutputFormat(weka.core.Instances inputFormat)
Determines the output format based on the input format and returns this.weka.core.Capabilities
getCapabilities()
Returns the Capabilities of this filter.protected double[]
getMeanStdev(weka.core.Instance in)
Return an array where the 1st value is the mean, and the 2nd the standard deviation of the attribute values.String[]
getOptions()
Gets the current settings of the filter.String
getRevision()
Returns the revision string.int
getWindows()
Returns the nth point setting.String
globalInfo()
Returns a string describing this classifier.Enumeration
listOptions()
Returns an enumeration describing the available options.static void
main(String[] args)
Main method for testing this class.protected weka.core.Instance
process(weka.core.Instance instance)
processes the given instance (may change the provided instance) and returns the modified version.void
setOptions(String[] options)
Parses a list of options for this object.void
setWindows(int value)
Sets the nth point setting.String
windowsPointTipText()
Returns the tip text for this property.-
Methods inherited from class weka.filters.SimpleStreamFilter
batchFinished, hasImmediateOutputFormat, input, preprocess, process
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Methods inherited from class weka.filters.Filter
batchFilterFile, bufferInput, copyValues, copyValues, debugTipText, doNotCheckCapabilitiesTipText, filterFile, flushInput, getCapabilities, 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
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Method Detail
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globalInfo
public String globalInfo()
Returns a string describing this classifier.- Specified by:
globalInfo
in classweka.filters.SimpleFilter
- Returns:
- a description of the classifier suitable for displaying in the explorer/experimenter gui
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listOptions
public Enumeration listOptions()
Returns an enumeration describing the available options.- Specified by:
listOptions
in interfaceweka.core.OptionHandler
- Overrides:
listOptions
in classweka.filters.Filter
- Returns:
- an enumeration of all the available options.
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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 interfaceweka.core.OptionHandler
- Overrides:
setOptions
in classweka.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()
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getOptions
public String[] getOptions()
Gets the current settings of the filter.- Specified by:
getOptions
in interfaceweka.core.OptionHandler
- Overrides:
getOptions
in classweka.filters.Filter
- Returns:
- an array of strings suitable for passing to setOptions
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setWindows
public void setWindows(int value)
Sets the nth point setting.- Parameters:
value
- the nth point
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getWindows
public int getWindows()
Returns the nth point setting.- Returns:
- the order
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windowsPointTipText
public String windowsPointTipText()
Returns the tip text for this property.- Returns:
- tip text for this property suitable for displaying in the GUI or for listing the options.
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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 interfaceweka.core.CapabilitiesHandler
- Overrides:
getCapabilities
in classweka.filters.Filter
- Returns:
- the capabilities of this object
- See Also:
Capabilities
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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 classweka.filters.SimpleStreamFilter
- Parameters:
inputFormat
- the input format to base the output format on- Returns:
- the output format
- Throws:
Exception
- in case the determination goes wrong
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getMeanStdev
protected double[] getMeanStdev(weka.core.Instance in)
Return an array where the 1st value is the mean, and the 2nd the standard deviation of the attribute values.- Parameters:
in
- instance- Returns:
- mean, stdev
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process
protected weka.core.Instance process(weka.core.Instance instance) throws Exception
processes the given instance (may change the provided instance) and returns the modified version.- Specified by:
process
in classweka.filters.SimpleStreamFilter
- Parameters:
instance
- the instance to process- Returns:
- the modified data
- Throws:
Exception
- in case the processing goes wrong
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getRevision
public String getRevision()
Returns the revision string.- Specified by:
getRevision
in interfaceweka.core.RevisionHandler
- Overrides:
getRevision
in classweka.filters.Filter
- Returns:
- the revision
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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
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