类 ReplaceMissingValues
java.lang.Object
weka.filters.Filter
weka.filters.unsupervised.attribute.PotentialClassIgnorer
weka.filters.unsupervised.attribute.ReplaceMissingValues
- 所有已实现的接口:
Serializable
,CapabilitiesHandler
,OptionHandler
,RevisionHandler
,Sourcable
,UnsupervisedFilter
public class ReplaceMissingValues
extends PotentialClassIgnorer
implements UnsupervisedFilter, Sourcable
Replaces all missing values for nominal and numeric attributes in a dataset with the modes and means from the training data.
Valid options are:
-unset-class-temporarily Unsets the class index temporarily before the filter is applied to the data. (default: no)
- 版本:
- $Revision: 5547 $
- 作者:
- Eibe Frank (eibe@cs.waikato.ac.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.Returns the revision string.Returns a string describing this filterboolean
Input an instance for filtering.static void
Main method for testing this class.boolean
setInputFormat
(Instances instanceInfo) Sets the format of the input instances.Returns a string that describes the filter as source.从类继承的方法 weka.filters.unsupervised.attribute.PotentialClassIgnorer
getIgnoreClass, getOptions, getOutputFormat, ignoreClassTipText, listOptions, setIgnoreClass, setOptions
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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ReplaceMissingValues
public ReplaceMissingValues()
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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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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:
IllegalStateException
- if no input format has been set.
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batchFinished
public boolean 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:
IllegalStateException
- 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. -
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 testing this class.- 参数:
argv
- should contain arguments to the filter: use -h for help
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