attributeselectionfilter.html

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<B>Constructor Detail</B></FONT></TD>
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<A NAME="AttributeSelectionFilter()"><!-- --></A><H3>
AttributeSelectionFilter</H3>
<PRE>
public <B>AttributeSelectionFilter</B>()</PRE>
<DL>
<DD>Constructor</DL>

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<B>Method Detail</B></FONT></TD>
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<A NAME="listOptions()"><!-- --></A><H3>
listOptions</H3>
<PRE>
public java.util.Enumeration <B>listOptions</B>()</PRE>
<DL>
<DD>Returns an enumeration describing the available options<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../weka/core/OptionHandler.html#listOptions()">listOptions</A></CODE> in interface <CODE><A HREF="../../weka/core/OptionHandler.html">OptionHandler</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>an enumeration of all the available options</DL>
</DD>
</DL>
<HR>

<A NAME="setOptions(java.lang.String[])"><!-- --></A><H3>
setOptions</H3>
<PRE>
public void <B>setOptions</B>(java.lang.String[]&nbsp;options)
                throws java.lang.Exception</PRE>
<DL>
<DD>Parses a given list of options. Valid options are:<p>

 -S <"Name of search class [search options]"> <br>
 Set search method for subset evaluators. <br>
 eg. -S "weka.attributeSelection.BestFirst -S 8" <p>

 -E <"Name of attribute/subset evaluation class [evaluator options]"> <br>
 Set the attribute/subset evaluator. <br>
 eg. -E "weka.attributeSelection.CfsSubsetEval -L" <p><DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../weka/core/OptionHandler.html#setOptions(java.lang.String[])">setOptions</A></CODE> in interface <CODE><A HREF="../../weka/core/OptionHandler.html">OptionHandler</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>options</CODE> - the list of options as an array of strings<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if an option is not supported</DL>
</DD>
</DL>
<HR>

<A NAME="getOptions()"><!-- --></A><H3>
getOptions</H3>
<PRE>
public java.lang.String[] <B>getOptions</B>()</PRE>
<DL>
<DD>Gets the current settings for the attribute selection (search, evaluator)
 etc.<DD><DL>
<DT><B>Specified by: </B><DD><CODE><A HREF="../../weka/core/OptionHandler.html#getOptions()">getOptions</A></CODE> in interface <CODE><A HREF="../../weka/core/OptionHandler.html">OptionHandler</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>an array of strings suitable for passing to setOptions()</DL>
</DD>
</DL>
<HR>

<A NAME="setEvaluator(weka.attributeSelection.ASEvaluation)"><!-- --></A><H3>
setEvaluator</H3>
<PRE>
public void <B>setEvaluator</B>(<A HREF="../../weka/attributeSelection/ASEvaluation.html">ASEvaluation</A>&nbsp;evaluator)</PRE>
<DL>
<DD>set a string holding the name of a attribute/subset evaluator<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="setSearch(weka.attributeSelection.ASSearch)"><!-- --></A><H3>
setSearch</H3>
<PRE>
public void <B>setSearch</B>(<A HREF="../../weka/attributeSelection/ASSearch.html">ASSearch</A>&nbsp;search)</PRE>
<DL>
<DD>Set as string holding the name of a search class<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getEvaluator()"><!-- --></A><H3>
getEvaluator</H3>
<PRE>
public <A HREF="../../weka/attributeSelection/ASEvaluation.html">ASEvaluation</A> <B>getEvaluator</B>()</PRE>
<DL>
<DD>Get the name of the attribute/subset evaluator<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the name of the attribute/subset evaluator as a string</DL>
</DD>
</DL>
<HR>

<A NAME="getSearch()"><!-- --></A><H3>
getSearch</H3>
<PRE>
public <A HREF="../../weka/attributeSelection/ASSearch.html">ASSearch</A> <B>getSearch</B>()</PRE>
<DL>
<DD>Get the name of the search method<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the name of the search method as a string</DL>
</DD>
</DL>
<HR>

<A NAME="input(weka.core.Instance)"><!-- --></A><H3>
input</H3>
<PRE>
public boolean <B>input</B>(<A HREF="../../weka/core/Instance.html">Instance</A>&nbsp;instance)
              throws java.lang.Exception</PRE>
<DL>
<DD>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.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../weka/filters/Filter.html#input(weka.core.Instance)">input</A></CODE> in class <CODE><A HREF="../../weka/filters/Filter.html">Filter</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>instance</CODE> - the input instance<DT><B>Returns:</B><DD>true if the filtered instance may now be
 collected with output().<DT><B>Throws:</B><DD><CODE>java.lang.IllegalStateException</CODE> - if no input format has been defined.<DD><CODE>java.lang.Exception</CODE> - if the input instance was not of the correct format 
 or if there was a problem with the filtering.</DL>
</DD>
</DL>
<HR>

<A NAME="batchFinished()"><!-- --></A><H3>
batchFinished</H3>
<PRE>
public boolean <B>batchFinished</B>()
                      throws java.lang.Exception</PRE>
<DL>
<DD>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.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../weka/filters/Filter.html#batchFinished()">batchFinished</A></CODE> in class <CODE><A HREF="../../weka/filters/Filter.html">Filter</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>true if there are instances pending output.<DT><B>Throws:</B><DD><CODE>java.lang.IllegalStateException</CODE> - if no input structure has been defined.<DD><CODE>java.lang.Exception</CODE> - if there is a problem during the attribute selection.</DL>
</DD>
</DL>
<HR>

<A NAME="setOutputFormat()"><!-- --></A><H3>
setOutputFormat</H3>
<PRE>
protected void <B>setOutputFormat</B>()
                        throws java.lang.Exception</PRE>
<DL>
<DD>Set the output format. Takes the currently defined attribute set 
 m_InputFormat and calls setOutputFormat(Instances) appropriately.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="convertInstance(weka.core.Instance)"><!-- --></A><H3>
convertInstance</H3>
<PRE>
protected void <B>convertInstance</B>(<A HREF="../../weka/core/Instance.html">Instance</A>&nbsp;instance)
                        throws java.lang.Exception</PRE>
<DL>
<DD>Convert a single instance over. Selected attributes only are transfered.
 The converted instance is added to the end of
 the output queue.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>instance</CODE> - the instance to convert</DL>
</DD>
</DL>
<HR>

<A NAME="resetOptions()"><!-- --></A><H3>
resetOptions</H3>
<PRE>
protected void <B>resetOptions</B>()</PRE>
<DL>
<DD>set options to their default values<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="main(java.lang.String[])"><!-- --></A><H3>
main</H3>
<PRE>
public static void <B>main</B>(java.lang.String[]&nbsp;argv)</PRE>
<DL>
<DD>Main method for testing this class.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>argv</CODE> - should contain arguments to the filter: use -h for help</DL>
</DD>
</DL>
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