类 AbstractTimeSeries

java.lang.Object
weka.filters.Filter
weka.filters.unsupervised.attribute.AbstractTimeSeries
所有已实现的接口:
Serializable, CapabilitiesHandler, OptionHandler, RevisionHandler, UnsupervisedFilter
直接已知子类:
TimeSeriesTranslate

public abstract class AbstractTimeSeries extends Filter implements UnsupervisedFilter, OptionHandler
An abstract instance filter that assumes instances form time-series data and performs some merging of attribute values in the current instance with attribute attribute values of some previous (or future) instance. For instances where the desired value is unknown either the instance may be dropped, or missing values used.

Valid filter-specific options are:

-R index1,index2-index4,...
Specify list of columns to calculate new values for. First and last are valid indexes. (default none)

-V
Invert matching sense (i.e. calculate for all non-specified columns)

-I num
The number of instances forward to merge values between. A negative number indicates taking values from a past instance. (default -1)

-M
For instances at the beginning or end of the dataset where the translated values are not known, remove those instances (default is to use missing values).

版本:
$Revision: 1.8 $
作者:
Len Trigg (trigg@cs.waikato.ac.nz)
另请参阅:
  • 构造器详细资料

    • AbstractTimeSeries

      public AbstractTimeSeries()
  • 方法详细资料

    • listOptions

      public Enumeration listOptions()
      Returns an enumeration describing the available options.
      指定者:
      listOptions 在接口中 OptionHandler
      返回:
      an enumeration of all the available options.
    • setOptions

      public void setOptions(String[] options) throws Exception
      Parses a given list of options controlling the behaviour of this object. Valid options are:

      -R index1,index2-index4,...
      Specify list of columns to copy. First and last are valid indexes. (default none)

      -V
      Invert matching sense (i.e. calculate for all non-specified columns)

      -I num
      The number of instances forward to translate values between. A negative number indicates taking values from a past instance. (default -1)

      -M
      For instances at the beginning or end of the dataset where the translated values are not known, remove those instances (default is to use missing values).

      指定者:
      setOptions 在接口中 OptionHandler
      参数:
      options - the list of options as an array of strings
      抛出:
      Exception - if an option is not supported
    • getOptions

      public String[] getOptions()
      Gets the current settings of the filter.
      指定者:
      getOptions 在接口中 OptionHandler
      返回:
      an array of strings suitable for passing to setOptions
    • setInputFormat

      public boolean setInputFormat(Instances instanceInfo) throws Exception
      Sets the format of the input instances.
      覆盖:
      setInputFormat 在类中 Filter
      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 format couldn't be set successfully
    • input

      public boolean input(Instance instance) throws Exception
      Input an instance for filtering. Ordinarily the instance is processed and made available for output immediately. Some filters require all 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 the input instance was not of the correct format or if there was a problem with the filtering.
    • batchFinished

      public boolean batchFinished()
      Signifies 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
    • fillWithMissingTipText

      public String fillWithMissingTipText()
      Returns the tip text for this property
      返回:
      tip text for this property suitable for displaying in the explorer/experimenter gui
    • getFillWithMissing

      public boolean getFillWithMissing()
      Gets whether missing values should be used rather than removing instances where the translated value is not known (due to border effects).
      返回:
      true if so
    • setFillWithMissing

      public void setFillWithMissing(boolean newFillWithMissing)
      Sets whether missing values should be used rather than removing instances where the translated value is not known (due to border effects).
      参数:
      newFillWithMissing - true if so
    • instanceRangeTipText

      public String instanceRangeTipText()
      Returns the tip text for this property
      返回:
      tip text for this property suitable for displaying in the explorer/experimenter gui
    • getInstanceRange

      public int getInstanceRange()
      Gets the number of instances forward to translate values between. A negative number indicates taking values from a past instance.
      返回:
      Value of InstanceRange.
    • setInstanceRange

      public void setInstanceRange(int newInstanceRange)
      Sets the number of instances forward to translate values between. A negative number indicates taking values from a past instance.
      参数:
      newInstanceRange - Value to assign to InstanceRange.
    • invertSelectionTipText

      public String invertSelectionTipText()
      Returns the tip text for this property
      返回:
      tip text for this property suitable for displaying in the explorer/experimenter gui
    • getInvertSelection

      public boolean getInvertSelection()
      Get whether the supplied columns are to be removed or kept
      返回:
      true if the supplied columns will be kept
    • setInvertSelection

      public void setInvertSelection(boolean invert)
      Set whether selected columns should be removed or kept. If true the selected columns are kept and unselected columns are copied. If false selected columns are copied and unselected columns are kept.
      参数:
      invert - the new invert setting
    • attributeIndicesTipText

      public String attributeIndicesTipText()
      Returns the tip text for this property
      返回:
      tip text for this property suitable for displaying in the explorer/experimenter gui
    • getAttributeIndices

      public String getAttributeIndices()
      Get the current range selection
      返回:
      a string containing a comma separated list of ranges
    • setAttributeIndices

      public void setAttributeIndices(String rangeList)
      Set which attributes are to be copied (or kept if invert is true)
      参数:
      rangeList - a string representing the list of attributes. Since the string will typically come from a user, attributes are indexed from 1.
      eg: first-3,5,6-last
    • setAttributeIndicesArray

      public void setAttributeIndicesArray(int[] attributes)
      Set which attributes are to be copied (or kept if invert is true)
      参数:
      attributes - an array containing indexes of attributes to select. Since the array will typically come from a program, attributes are indexed from 0.