类 Normalize
java.lang.Object
weka.filters.Filter
weka.filters.unsupervised.attribute.PotentialClassIgnorer
weka.filters.unsupervised.attribute.Normalize
- 所有已实现的接口:
Serializable
,CapabilitiesHandler
,OptionHandler
,RevisionHandler
,Sourcable
,UnsupervisedFilter
public class Normalize
extends PotentialClassIgnorer
implements UnsupervisedFilter, Sourcable, OptionHandler
Normalizes all numeric values in the given dataset (apart from the class attribute, if set). The resulting values are by default in [0,1] for the data used to compute the normalization intervals. But with the scale and translation parameters one can change that, e.g., with scale = 2.0 and translation = -1.0 you get values in the range [-1,+1].
Valid options are:
-unset-class-temporarily Unsets the class index temporarily before the filter is applied to the data. (default: no)
-S <num> The scaling factor for the output range. (default: 1.0)
-T <num> The translation of the output range. (default: 0.0)
- 版本:
- $Revision: 5543 $
- 作者:
- Eibe Frank (eibe@cs.waikato.ac.nz), FracPete (fracpete at waikato dot ac dot nz)
- 另请参阅:
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构造器概要
构造器 -
方法概要
修饰符和类型方法说明boolean
Signify that this batch of input to the filter is finished.Returns the Capabilities of this filter.double[]
Returns the calculated maximum values for the attributes in the data.double[]
Returns the calculated minimum values for the attributes in the data.String[]
Gets the current settings of the filter.Returns the revision string.double
getScale()
Get the scaling factor.double
Get the translation.Returns a string describing this filter.boolean
Input an instance for filtering.Returns an enumeration describing the available options.static void
Main method for running this filter.Returns the tip text for this property.boolean
setInputFormat
(Instances instanceInfo) Sets the format of the input instances.void
setOptions
(String[] options) Parses a given list of options.void
setScale
(double value) Sets the scaling factor.void
setTranslation
(double value) Sets the translation.Returns a string that describes the filter as source.Returns the tip text for this property.从类继承的方法 weka.filters.unsupervised.attribute.PotentialClassIgnorer
getIgnoreClass, getOutputFormat, ignoreClassTipText, setIgnoreClass
从类继承的方法 weka.filters.Filter
batchFilterFile, filterFile, getCapabilities, isFirstBatchDone, isNewBatch, isOutputFormatDefined, makeCopies, makeCopy, numPendingOutput, output, outputPeek, toString, useFilter, wekaStaticWrapper
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构造器详细资料
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Normalize
public Normalize()
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方法详细资料
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globalInfo
Returns a string describing this filter.- 返回:
- a description of the filter suitable for displaying in the explorer/experimenter gui
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listOptions
Returns an enumeration describing the available options.- 指定者:
listOptions
在接口中OptionHandler
- 覆盖:
listOptions
在类中PotentialClassIgnorer
- 返回:
- an enumeration of all the available options.
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setOptions
Parses a given list of options. Valid options are:-unset-class-temporarily Unsets the class index temporarily before the filter is applied to the data. (default: no)
-S <num> The scaling factor for the output range. (default: 1.0)
-T <num> The translation of the output range. (default: 0.0)
- 指定者:
setOptions
在接口中OptionHandler
- 覆盖:
setOptions
在类中PotentialClassIgnorer
- 参数:
options
- the list of options as an array of strings- 抛出:
Exception
- if an option is not supported
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getOptions
Gets the current settings of the filter.- 指定者:
getOptions
在接口中OptionHandler
- 覆盖:
getOptions
在类中PotentialClassIgnorer
- 返回:
- an array of strings suitable for passing to setOptions
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getCapabilities
Returns the Capabilities of this filter.- 指定者:
getCapabilities
在接口中CapabilitiesHandler
- 覆盖:
getCapabilities
在类中Filter
- 返回:
- the capabilities of this object
- 另请参阅:
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setInputFormat
Sets the format of the input instances.- 覆盖:
setInputFormat
在类中PotentialClassIgnorer
- 参数:
instanceInfo
- an Instances object containing the input instance structure (any instances contained in the object are ignored - only the structure is required).- 返回:
- true if the outputFormat may be collected immediately
- 抛出:
Exception
- if the input format can't be set successfully
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input
Input an instance for filtering. Filter requires all training instances be read before producing output.- 覆盖:
input
在类中Filter
- 参数:
instance
- the input instance- 返回:
- true if the filtered instance may now be collected with output().
- 抛出:
Exception
- if an error occursIllegalStateException
- if no input format has been set.
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batchFinished
Signify that this batch of input to the filter is finished. If the filter requires all instances prior to filtering, output() may now be called to retrieve the filtered instances.- 覆盖:
batchFinished
在类中Filter
- 返回:
- true if there are instances pending output
- 抛出:
Exception
- if an error occursIllegalStateException
- if no input structure has been defined
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toSource
Returns a string that describes the filter as source. The filter will be contained in a class with the given name (there may be auxiliary classes), and will contain two methods with these signatures:
where the array// converts one row public static Object[] filter(Object[] i); // converts a full dataset (first dimension is row index) public static Object[][] filter(Object[][] i);
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. -
getMinArray
public double[] getMinArray()Returns the calculated minimum values for the attributes in the data.- 返回:
- the array with the minimum values
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getMaxArray
public double[] getMaxArray()Returns the calculated maximum values for the attributes in the data.- 返回:
- the array with the maximum values
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scaleTipText
Returns the tip text for this property.- 返回:
- tip text for this property suitable for displaying in the explorer/experimenter gui
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getScale
public double getScale()Get the scaling factor.- 返回:
- the factor
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setScale
public void setScale(double value) Sets the scaling factor.- 参数:
value
- the scaling factor
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translationTipText
Returns the tip text for this property.- 返回:
- tip text for this property suitable for displaying in the explorer/experimenter gui
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getTranslation
public double getTranslation()Get the translation.- 返回:
- the translation
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setTranslation
public void setTranslation(double value) Sets the translation.- 参数:
value
- the translation
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getRevision
Returns the revision string.- 指定者:
getRevision
在接口中RevisionHandler
- 覆盖:
getRevision
在类中Filter
- 返回:
- the revision
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main
Main method for running this filter.- 参数:
args
- should contain arguments to the filter, use -h for help
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