classifiersubseteval.html

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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 <p>

 -B <classifier> <br>
 Class name of the classifier to use for accuracy estimation.
 Place any classifier options last on the command line following a
 "--". Eg  -B weka.classifiers.NaiveBayes ... -- -K <p>

 -T <br>
 Use the training data for accuracy estimation rather than a hold out/
 test set. <p>

 -H <filename> <br>
 The file containing hold out/test instances to use for accuracy estimation
 <p><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>

 -C <classifier> <br>
 Class name of classifier to use for accuracy estimation.
 Place any classifier options last on the command line following a
 "--". Eg  -B weka.classifiers.NaiveBayes ... -- -K <p>

 -T <br>
 Use training data instead of a hold out/test set for accuracy estimation.
 <p>

 -H <filname> <br>
 Name of the hold out/test set to estimate classifier accuracy on.
 <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="classifierTipText()"><!-- --></A><H3>
classifierTipText</H3>
<PRE>
public java.lang.String <B>classifierTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>tip text for this property suitable for
 displaying in the explorer/experimenter gui</DL>
</DD>
</DL>
<HR>

<A NAME="setClassifier(weka.classifiers.Classifier)"><!-- --></A><H3>
setClassifier</H3>
<PRE>
public void <B>setClassifier</B>(<A HREF="../../weka/classifiers/Classifier.html">Classifier</A>&nbsp;newClassifier)</PRE>
<DL>
<DD>Set the classifier to use for accuracy estimation<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>newClassifier</CODE> - the Classifier to use.</DL>
</DD>
</DL>
<HR>

<A NAME="getClassifier()"><!-- --></A><H3>
getClassifier</H3>
<PRE>
public <A HREF="../../weka/classifiers/Classifier.html">Classifier</A> <B>getClassifier</B>()</PRE>
<DL>
<DD>Get the classifier used as the base learner.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the classifier used as the classifier</DL>
</DD>
</DL>
<HR>

<A NAME="holdOutFileTipText()"><!-- --></A><H3>
holdOutFileTipText</H3>
<PRE>
public java.lang.String <B>holdOutFileTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>tip text for this property suitable for
 displaying in the explorer/experimenter gui</DL>
</DD>
</DL>
<HR>

<A NAME="getHoldOutFile()"><!-- --></A><H3>
getHoldOutFile</H3>
<PRE>
public java.io.File <B>getHoldOutFile</B>()</PRE>
<DL>
<DD>Gets the file that holds hold out/test instances.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>File that contains hold out instances</DL>
</DD>
</DL>
<HR>

<A NAME="setHoldOutFile(java.io.File)"><!-- --></A><H3>
setHoldOutFile</H3>
<PRE>
public void <B>setHoldOutFile</B>(java.io.File&nbsp;h)</PRE>
<DL>
<DD>Set the file that contains hold out/test instances<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>h</CODE> - the hold out file</DL>
</DD>
</DL>
<HR>

<A NAME="useTrainingTipText()"><!-- --></A><H3>
useTrainingTipText</H3>
<PRE>
public java.lang.String <B>useTrainingTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>tip text for this property suitable for
 displaying in the explorer/experimenter gui</DL>
</DD>
</DL>
<HR>

<A NAME="getUseTraining()"><!-- --></A><H3>
getUseTraining</H3>
<PRE>
public boolean <B>getUseTraining</B>()</PRE>
<DL>
<DD>Get if training data is to be used instead of hold out/test data<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>true if training data is to be used instead of hold out data</DL>
</DD>
</DL>
<HR>

<A NAME="setUseTraining(boolean)"><!-- --></A><H3>
setUseTraining</H3>
<PRE>
public void <B>setUseTraining</B>(boolean&nbsp;t)</PRE>
<DL>
<DD>Set if training data is to be used instead of hold out/test data<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>true if training data is to be used instead of hold out data</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 of ClassifierSubsetEval<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="buildEvaluator(weka.core.Instances)"><!-- --></A><H3>
buildEvaluator</H3>
<PRE>
public void <B>buildEvaluator</B>(<A HREF="../../weka/core/Instances.html">Instances</A>&nbsp;data)
                    throws java.lang.Exception</PRE>
<DL>
<DD>Generates a attribute evaluator. Has to initialize all fields of the 
 evaluator that are not being set via options.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../weka/attributeSelection/ASEvaluation.html#buildEvaluator(weka.core.Instances)">buildEvaluator</A></CODE> in class <CODE><A HREF="../../weka/attributeSelection/ASEvaluation.html">ASEvaluation</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - set of instances serving as training data<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if the evaluator has not been 
 generated successfully</DL>
</DD>
</DL>
<HR>

<A NAME="evaluateSubset(java.util.BitSet)"><!-- --></A><H3>
evaluateSubset</H3>
<PRE>
public double <B>evaluateSubset</B>(java.util.BitSet&nbsp;subset)
                      throws java.lang.Exception</PRE>
<DL>
<DD>Evaluates a subset of attributes<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../weka/attributeSelection/SubsetEvaluator.html#evaluateSubset(java.util.BitSet)">evaluateSubset</A></CODE> in class <CODE><A HREF="../../weka/attributeSelection/SubsetEvaluator.html">SubsetEvaluator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>subset</CODE> - a bitset representing the attribute subset to be 
 evaluated<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if the subset could not be evaluated</DL>
</DD>
</DL>
<HR>

<A NAME="evaluateSubset(java.util.BitSet, weka.core.Instances)"><!-- --></A><H3>
evaluateSubset</H3>
<PRE>
public double <B>evaluateSubset</B>(java.util.BitSet&nbsp;subset,
                             <A HREF="../../weka/core/Instances.html">Instances</A>&nbsp;holdOut)
                      throws java.lang.Exception</PRE>
<DL>
<DD>Evaluates a subset of attributes with respect to a set of instances.
 Calling this function overides any test/hold out instancs set from
 setHoldOutFile.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../weka/attributeSelection/HoldOutSubsetEvaluator.html#evaluateSubset(java.util.BitSet, weka.core.Instances)">evaluateSubset</A></CODE> in class <CODE><A HREF="../../weka/attributeSelection/HoldOutSubsetEvaluator.html">HoldOutSubsetEvaluator</A></CODE></DL>
</DD>
<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>
<HR>

<A NAME="evaluateSubset(java.util.BitSet, weka.core.Instance, boolean)"><!-- --></A><H3>
evaluateSubset</H3>
<PRE>
public double <B>evaluateSubset</B>(java.util.BitSet&nbsp;subset,
                             <A HREF="../../weka/core/Instance.html">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.
 Calling this function overides any hold out/test instances set
 through setHoldOutFile.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../weka/attributeSelection/HoldOutSubsetEvaluator.html#evaluateSubset(java.util.BitSet, weka.core.Instance, boolean)">evaluateSubset</A></CODE> in class <CODE><A HREF="../../weka/attributeSelection/HoldOutSubsetEvaluator.html">HoldOutSubsetEvaluator</A></CODE></DL>
</DD>
<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>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD>Returns a string describing classifierSubsetEval<DD><DL>
<DT><B>Overrides:</B><DD><CODE>toString</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the description as a string</DL>
</DD>
</DL>
<HR>

<A NAME="resetOptions()"><!-- --></A><H3>
resetOptions</H3>
<PRE>
protected void <B>resetOptions</B>()</PRE>
<DL>
<DD>reset to defaults<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;args)</PRE>
<DL>
<DD>Main method for testing this class.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>args</CODE> - the options</DL>
</DD>
</DL>
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