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<TD><CODE><A HREF="../../../../com/rapidminer/operator/IOObject.html#copy()">copy</A>, <A HREF="../../../../com/rapidminer/operator/IOObject.html#getLog()">getLog</A>, <A HREF="../../../../com/rapidminer/operator/IOObject.html#getSource()">getSource</A>, <A HREF="../../../../com/rapidminer/operator/IOObject.html#setSource(java.lang.String)">setSource</A>, <A HREF="../../../../com/rapidminer/operator/IOObject.html#setWorkingOperator(com.rapidminer.operator.Operator)">setWorkingOperator</A>, <A HREF="../../../../com/rapidminer/operator/IOObject.html#write(java.io.OutputStream)">write</A></CODE></TD>
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<A NAME="PerformanceCriterion()"><!-- --></A><H3>
PerformanceCriterion</H3>
<PRE>
public <B>PerformanceCriterion</B>()</PRE>
<DL>
</DL>
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<A NAME="PerformanceCriterion(com.rapidminer.operator.performance.PerformanceCriterion)"><!-- --></A><H3>
PerformanceCriterion</H3>
<PRE>
public <B>PerformanceCriterion</B>(<A HREF="../../../../com/rapidminer/operator/performance/PerformanceCriterion.html" title="class in com.rapidminer.operator.performance">PerformanceCriterion</A>&nbsp;o)</PRE>
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<DD>Clone constructor.
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<A NAME="getDescription()"><!-- --></A><H3>
getDescription</H3>
<PRE>
public abstract java.lang.String <B>getDescription</B>()</PRE>
<DL>
<DD>Returns a description of the performance criterion. This description is
  used for GUI purposes and automatic parameter type creation for the
  <A HREF="../../../../com/rapidminer/operator/performance/PerformanceEvaluator.html" title="class in com.rapidminer.operator.performance"><CODE>PerformanceEvaluator</CODE></A> operator.
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<A NAME="getExampleCount()"><!-- --></A><H3>
getExampleCount</H3>
<PRE>
public abstract double <B>getExampleCount</B>()</PRE>
<DL>
<DD>Returns the number of data points which was used to determine the
 criterion value. If the criterion does not use example weights (or no
 weight was given) then the returned value will be an integer. Otherwise,
 the returned value is the sum of all example weights.
<P>
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<A NAME="getFitness()"><!-- --></A><H3>
getFitness</H3>
<PRE>
public abstract double <B>getFitness</B>()</PRE>
<DL>
<DD><p>Returns the fitness depending on the value. The fitness values will be
 used for all optimization purposes (feature space transformations, parameter
 optimizations...) and must always be maximized. Hence, if your criterion
 is better the smaller the value is you should return something like 
 (-1 * value) or (1 / value).</p>
 
 <p>Subclasses should use
 <A HREF="../../../../com/rapidminer/tools/math/Averagable.html#getAverage()"><CODE>Averagable.getAverage()</CODE></A> instead of <A HREF="../../../../com/rapidminer/tools/math/Averagable.html#getMikroAverage()"><CODE>Averagable.getMikroAverage()</CODE></A> in this method 
 since usually the makro average (if available) should be optmized instead 
 of the mikro average. The mikro average should only be used in the (rare) 
 cases where no makro average is available but this is automatically done
 returned by <A HREF="../../../../com/rapidminer/tools/math/Averagable.html#getAverage()"><CODE>Averagable.getAverage()</CODE></A> in these cases.</p>
<P>
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<A NAME="getMaxFitness()"><!-- --></A><H3>
getMaxFitness</H3>
<PRE>
public double <B>getMaxFitness</B>()</PRE>
<DL>
<DD>Returns the maximum fitness. The default implementation resturns
 POSITIVE_INFINITY, subclasses may override this to allow feature
 operators to end the optimization if the maximum was reached.
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<A NAME="compareTo(com.rapidminer.operator.performance.PerformanceCriterion)"><!-- --></A><H3>
compareTo</H3>
<PRE>
public int <B>compareTo</B>(<A HREF="../../../../com/rapidminer/operator/performance/PerformanceCriterion.html" title="class in com.rapidminer.operator.performance">PerformanceCriterion</A>&nbsp;o)</PRE>
<DL>
<DD>The semantics of this method follow the specification in the interface
 <tt>java.lang.Comparable</tt> in the following way: Two objects of this
 class are equal if their <b>getFitness()</b> values are equal. The
 return value is 0 in this case. If the specified object is not an object
 of this class, a ClassCastException is thrown. If the given object has
 fitness bigger than this object, the return value is -1. If the given
 object has fitness smaller than this object, 1 is returned. No
 characteristics beside the fitness are used to compare two objects of
 this class.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE>compareTo</CODE> in interface <CODE>java.lang.Comparable&lt;<A HREF="../../../../com/rapidminer/operator/performance/PerformanceCriterion.html" title="class in com.rapidminer.operator.performance">PerformanceCriterion</A>&gt;</CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>o</CODE> - Object of this class to compare this object to.
<DT><B>Returns:</B><DD>-1, 0 or 1 if the given object is greater than, equal to, or less
         than this object.</DL>
</DD>
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