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java.lang.Object | +--weka.filters.Filter | +--weka.filters.RandomizeFilter
This filter randomly shuffles the order of instances passed through it. The random number generator is reset with the seed value whenever setInputFormat() is called.
Valid filter-specific options are:
-S num
Specify the random number seed (default 42).
Field Summary | |
protected Random |
m_Random
The current random number generator |
protected int |
m_Seed
The random number seed |
Fields inherited from class weka.filters.Filter |
m_Debug, m_NewBatch |
Constructor Summary | |
RandomizeFilter()
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Method Summary | |
boolean |
batchFinished()
Signify that this batch of input to the filter is finished. |
String[] |
getOptions()
Gets the current settings of the filter. |
int |
getRandomSeed()
Get the random number generator seed value. |
Enumeration |
listOptions()
Returns an enumeration describing the available options |
static void |
main(String[] argv)
Main method for testing this class. |
boolean |
setInputFormat(Instances instanceInfo)
Sets the format of the input instances. |
void |
setOptions(String[] options)
Parses a list of options for this object. |
void |
setRandomSeed(int newRandomSeed)
Set the random number generator seed value. |
Methods inherited from class weka.filters.Filter |
batchFilterFile, bufferInput, copyStringValues, copyStringValues, filterFile, flushInput, getInputFormat, getInputStringIndex, getOutputFormat, getOutputStringIndex, getStringIndices, input, inputFormat, isOutputFormatDefined, numPendingOutput, output, outputFormat, outputFormatPeek, outputPeek, push, resetQueue, setOutputFormat, useFilter |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
protected int m_Seed
protected Random m_Random
Constructor Detail |
public RandomizeFilter()
Method Detail |
public Enumeration listOptions()
listOptions
in interface OptionHandler
public void setOptions(String[] options) throws Exception
-S num
Specify the random number seed (default 42).
setOptions
in interface OptionHandler
options
- the list of options as an array of strings
Exception
- if an option is not supportedpublic String[] getOptions()
getOptions
in interface OptionHandler
public int getRandomSeed()
public void setRandomSeed(int newRandomSeed)
newRandomSeed
- value to use as the random number generator seed.public boolean setInputFormat(Instances instanceInfo) throws Exception
setInputFormat
in class Filter
instanceInfo
- an Instances object containing the input instance
structure (any instances contained in the object are ignored - only the
structure is required).
Exception
- if the inputFormat can't be set successfullypublic boolean batchFinished()
batchFinished
in class Filter
IllegalStateException
- if no input format has been set.public static void main(String[] argv)
argv
- should contain arguments to the filter: use -h for help
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