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java.lang.Objectweka.filters.Filter
weka.filters.unsupervised.attribute.PotentialClassIgnorer
weka.filters.unsupervised.attribute.Standardize
public class Standardize
Standardizes all numeric attributes in the given dataset to have zero mean and unit variance (apart from the class attribute, if set).
Valid options are:-unset-class-temporarily Unsets the class index temporarily before the filter is applied to the data. (default: no)
Constructor Summary | |
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Standardize()
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Method Summary | |
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boolean |
batchFinished()
Signify that this batch of input to the filter is finished. |
Capabilities |
getCapabilities()
Returns the Capabilities of this filter. |
java.lang.String |
getRevision()
Returns the revision string. |
java.lang.String |
globalInfo()
Returns a string describing this filter |
boolean |
input(Instance instance)
Input an instance for filtering. |
static void |
main(java.lang.String[] argv)
Main method for testing this class. |
boolean |
setInputFormat(Instances instanceInfo)
Sets the format of the input instances. |
java.lang.String |
toSource(java.lang.String className,
Instances data)
Returns a string that describes the filter as source. |
Methods inherited from class weka.filters.unsupervised.attribute.PotentialClassIgnorer |
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getIgnoreClass, getOptions, getOutputFormat, ignoreClassTipText, listOptions, setIgnoreClass, setOptions |
Methods inherited from class weka.filters.Filter |
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batchFilterFile, filterFile, getCapabilities, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, numPendingOutput, output, outputPeek, toString, useFilter, wekaStaticWrapper |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public Standardize()
Method Detail |
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public java.lang.String globalInfo()
public Capabilities getCapabilities()
getCapabilities
in interface CapabilitiesHandler
getCapabilities
in class Filter
Capabilities
public boolean setInputFormat(Instances instanceInfo) throws java.lang.Exception
setInputFormat
in class PotentialClassIgnorer
instanceInfo
- an Instances object containing the input
instance structure (any instances contained in the object are
ignored - only the structure is required).
java.lang.Exception
- if the input format can't be set
successfullypublic boolean input(Instance instance) throws java.lang.Exception
input
in class Filter
instance
- the input instance
java.lang.IllegalStateException
- if no input format has been set.
java.lang.NullPointerException
- if the input format has not been
defined.
java.lang.Exception
- if the input instance was not of the correct
format or if there was a problem with the filtering.public boolean batchFinished() throws java.lang.Exception
batchFinished
in class Filter
java.lang.Exception
- if an error occurs
java.lang.IllegalStateException
- if no input structure has been definedpublic java.lang.String toSource(java.lang.String className, Instances data) throws java.lang.Exception
// converts one row
public static Object[] filter(Object[] i);
// converts a full dataset (first dimension is row index)
public static Object[][] filter(Object[][] i);
where the array i
contains elements that are either
Double, String, with missing values represented as null. The generated
code is public domain and comes with no warranty.
toSource
in interface Sourcable
className
- the name that should be given to the source class.data
- the dataset used for initializing the filter
java.lang.Exception
- if the source can't be computedpublic java.lang.String getRevision()
getRevision
in interface RevisionHandler
public static void main(java.lang.String[] argv)
argv
- should contain arguments to the filter:
use -h for help
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