onerattributeeval.html

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<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a string describing this option</DL>
</DD>
</DL>
<HR>

<A NAME="setSeed(int)"><!-- --></A><H3>
setSeed</H3>
<PRE>
public void <B>setSeed</B>(int&nbsp;seed)</PRE>
<DL>
<DD>Set the random number seed for cross validation
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>seed</CODE> - the seed to use</DL>
</DD>
</DL>
<HR>

<A NAME="getSeed()"><!-- --></A><H3>
getSeed</H3>
<PRE>
public int <B>getSeed</B>()</PRE>
<DL>
<DD>Get the random number seed
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>an <code>int</code> value</DL>
</DD>
</DL>
<HR>

<A NAME="foldsTipText()"><!-- --></A><H3>
foldsTipText</H3>
<PRE>
public java.lang.String <B>foldsTipText</B>()</PRE>
<DL>
<DD>Returns a string for this option suitable for display in the gui
 as a tip text
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a string describing this option</DL>
</DD>
</DL>
<HR>

<A NAME="setFolds(int)"><!-- --></A><H3>
setFolds</H3>
<PRE>
public void <B>setFolds</B>(int&nbsp;folds)</PRE>
<DL>
<DD>Set the number of folds to use for cross validation
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>folds</CODE> - the number of folds</DL>
</DD>
</DL>
<HR>

<A NAME="getFolds()"><!-- --></A><H3>
getFolds</H3>
<PRE>
public int <B>getFolds</B>()</PRE>
<DL>
<DD>Get the number of folds used for cross validation
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the number of folds</DL>
</DD>
</DL>
<HR>

<A NAME="evalUsingTrainingDataTipText()"><!-- --></A><H3>
evalUsingTrainingDataTipText</H3>
<PRE>
public java.lang.String <B>evalUsingTrainingDataTipText</B>()</PRE>
<DL>
<DD>Returns a string for this option suitable for display in the gui
 as a tip text
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a string describing this option</DL>
</DD>
</DL>
<HR>

<A NAME="setEvalUsingTrainingData(boolean)"><!-- --></A><H3>
setEvalUsingTrainingData</H3>
<PRE>
public void <B>setEvalUsingTrainingData</B>(boolean&nbsp;e)</PRE>
<DL>
<DD>Use the training data to evaluate attributes rather than cross validation
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>e</CODE> - true if training data is to be used for evaluation</DL>
</DD>
</DL>
<HR>

<A NAME="minimumBucketSizeTipText()"><!-- --></A><H3>
minimumBucketSizeTipText</H3>
<PRE>
public java.lang.String <B>minimumBucketSizeTipText</B>()</PRE>
<DL>
<DD>Returns a string for this option suitable for display in the gui
 as a tip text
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a string describing this option</DL>
</DD>
</DL>
<HR>

<A NAME="setMinimumBucketSize(int)"><!-- --></A><H3>
setMinimumBucketSize</H3>
<PRE>
public void <B>setMinimumBucketSize</B>(int&nbsp;minB)</PRE>
<DL>
<DD>Set the minumum bucket size used by OneR
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>minB</CODE> - the minimum bucket size to use</DL>
</DD>
</DL>
<HR>

<A NAME="getMinimumBucketSize()"><!-- --></A><H3>
getMinimumBucketSize</H3>
<PRE>
public int <B>getMinimumBucketSize</B>()</PRE>
<DL>
<DD>Get the minimum bucket size used by oneR
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the minimum bucket size used</DL>
</DD>
</DL>
<HR>

<A NAME="getEvalUsingTrainingData()"><!-- --></A><H3>
getEvalUsingTrainingData</H3>
<PRE>
public boolean <B>getEvalUsingTrainingData</B>()</PRE>
<DL>
<DD>Returns true if the training data is to be used for evaluation
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true if training data is to be used for evaluation</DL>
</DD>
</DL>
<HR>

<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>
<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" title="interface in weka.core">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 <seed> <br>
 Set the seed for cross validation (default = 1). <p>

 -F <folds> <br>
 Set the number of folds for cross validation (default = 10). <p>
 
 -B <minimum bucket size> <br>
 Set the minimum number of objects per bucket (passed on to
 OneR, default = 6). <p>

 -D <br>
 Use the training data to evaluate attributes rather than cross validation. <p>
<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" title="interface in weka.core">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><B>Description copied from interface: <CODE><A HREF="../../weka/core/OptionHandler.html" title="interface in weka.core">OptionHandler</A></CODE></B></DD>
<DD>Gets the current option settings for the OptionHandler.
<P>
<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" title="interface in weka.core">OptionHandler</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the list of current option settings as an array of strings</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" title="class in weka.core">Instances</A>&nbsp;data)
                    throws java.lang.Exception</PRE>
<DL>
<DD>Initializes a OneRAttribute attribute evaluator.
 Discretizes all attributes that are numeric.
<P>
<DD><DL>
<DT><B>Specified by:</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" title="class in weka.attributeSelection">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="evaluateAttribute(int)"><!-- --></A><H3>
evaluateAttribute</H3>
<PRE>
public double <B>evaluateAttribute</B>(int&nbsp;attribute)
                         throws java.lang.Exception</PRE>
<DL>
<DD>evaluates an individual attribute by measuring the amount
 of information gained about the class given the attribute.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../weka/attributeSelection/AttributeEvaluator.html#evaluateAttribute(int)">evaluateAttribute</A></CODE> in class <CODE><A HREF="../../weka/attributeSelection/AttributeEvaluator.html" title="class in weka.attributeSelection">AttributeEvaluator</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>attribute</CODE> - the index of the attribute to be evaluated
<DT><B>Returns:</B><DD>the "merit" of the attribute
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if the attribute could not be evaluated</DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD>Return a description of the evaluator
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>description as a string</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.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>args</CODE> - the options</DL>
</DD>
</DL>
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