holdoutsubsetevaluator.html

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<TH ALIGN="left"><B>Methods inherited from class weka.attributeSelection.<A HREF="../../weka/attributeSelection/SubsetEvaluator.html" title="class in weka.attributeSelection">SubsetEvaluator</A></B></TH>
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<TD><CODE><A HREF="../../weka/attributeSelection/SubsetEvaluator.html#evaluateSubset(java.util.BitSet)">evaluateSubset</A></CODE></TD>
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<TH ALIGN="left"><B>Methods inherited from class weka.attributeSelection.<A HREF="../../weka/attributeSelection/ASEvaluation.html" title="class in weka.attributeSelection">ASEvaluation</A></B></TH>
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<TD><CODE><A HREF="../../weka/attributeSelection/ASEvaluation.html#buildEvaluator(weka.core.Instances)">buildEvaluator</A>, <A HREF="../../weka/attributeSelection/ASEvaluation.html#forName(java.lang.String, java.lang.String[])">forName</A>, <A HREF="../../weka/attributeSelection/ASEvaluation.html#getCapabilities()">getCapabilities</A>, <A HREF="../../weka/attributeSelection/ASEvaluation.html#makeCopies(weka.attributeSelection.ASEvaluation, int)">makeCopies</A>, <A HREF="../../weka/attributeSelection/ASEvaluation.html#postProcess(int[])">postProcess</A></CODE></TD>
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<A NAME="HoldOutSubsetEvaluator()"><!-- --></A><H3>
HoldOutSubsetEvaluator</H3>
<PRE>
public <B>HoldOutSubsetEvaluator</B>()</PRE>
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<A NAME="evaluateSubset(java.util.BitSet, weka.core.Instances)"><!-- --></A><H3>
evaluateSubset</H3>
<PRE>
public abstract double <B>evaluateSubset</B>(java.util.BitSet&nbsp;subset,
                                      <A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;holdOut)
                               throws java.lang.Exception</PRE>
<DL>
<DD>Evaluates a subset of attributes with respect to a set of instances.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>subset</CODE> - a bitset representing the attribute subset to be
 evaluated<DD><CODE>holdOut</CODE> - a set of instances (possibly seperate and distinct
 from those use to build/train the evaluator) with which to
 evaluate the merit of the subset
<DT><B>Returns:</B><DD>the "merit" of the subset on the holdOut data
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if the subset cannot be evaluated</DL>
</DD>
</DL>
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<A NAME="evaluateSubset(java.util.BitSet, weka.core.Instance, boolean)"><!-- --></A><H3>
evaluateSubset</H3>
<PRE>
public abstract double <B>evaluateSubset</B>(java.util.BitSet&nbsp;subset,
                                      <A HREF="../../weka/core/Instance.html" title="class in weka.core">Instance</A>&nbsp;holdOut,
                                      boolean&nbsp;retrain)
                               throws java.lang.Exception</PRE>
<DL>
<DD>Evaluates a subset of attributes with respect to a single instance.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>subset</CODE> - a bitset representing the attribute subset to be
 evaluated<DD><CODE>holdOut</CODE> - a single instance (possibly not one of those used to
 build/train the evaluator) with which to evaluate the merit of the subset<DD><CODE>retrain</CODE> - true if the classifier should be retrained with respect
 to the new subset before testing on the holdOut instance.
<DT><B>Returns:</B><DD>the "merit" of the subset on the holdOut instance
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if the subset cannot be evaluated</DL>
</DD>
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