costsensitiveclassifier.html

数据挖掘的最常用工具。由于开源

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</DD>
<DD><DL>

<DT><B>Returns:</B><DD>tip text for this property suitable for
 displaying in the explorer/experimenter gui</DL>
</DD>
</DL>
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<A NAME="getOnDemandDirectory()"><!-- --></A><H3>
getOnDemandDirectory</H3>
<PRE>
public java.io.File <B>getOnDemandDirectory</B>()</PRE>
<DL>
<DD>Returns the directory that will be searched for cost files when
 loading on demand.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>The cost file search directory.</DL>
</DD>
</DL>
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<A NAME="setOnDemandDirectory(java.io.File)"><!-- --></A><H3>
setOnDemandDirectory</H3>
<PRE>
public void <B>setOnDemandDirectory</B>(java.io.File&nbsp;newDir)</PRE>
<DL>
<DD>Sets the directory that will be searched for cost files when
 loading on demand.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>newDir</CODE> - The cost file search directory.</DL>
</DD>
</DL>
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<A NAME="minimizeExpectedCostTipText()"><!-- --></A><H3>
minimizeExpectedCostTipText</H3>
<PRE>
public java.lang.String <B>minimizeExpectedCostTipText</B>()</PRE>
<DL>
<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>
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<A NAME="getMinimizeExpectedCost()"><!-- --></A><H3>
getMinimizeExpectedCost</H3>
<PRE>
public boolean <B>getMinimizeExpectedCost</B>()</PRE>
<DL>
<DD>Gets the value of MinimizeExpectedCost.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>Value of MinimizeExpectedCost.</DL>
</DD>
</DL>
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<A NAME="setMinimizeExpectedCost(boolean)"><!-- --></A><H3>
setMinimizeExpectedCost</H3>
<PRE>
public void <B>setMinimizeExpectedCost</B>(boolean&nbsp;newMinimizeExpectedCost)</PRE>
<DL>
<DD>Set the value of MinimizeExpectedCost.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>newMinimizeExpectedCost</CODE> - Value to assign to MinimizeExpectedCost.</DL>
</DD>
</DL>
<HR>

<A NAME="costMatrixTipText()"><!-- --></A><H3>
costMatrixTipText</H3>
<PRE>
public java.lang.String <B>costMatrixTipText</B>()</PRE>
<DL>
<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="getCostMatrix()"><!-- --></A><H3>
getCostMatrix</H3>
<PRE>
public <A HREF="../../../weka/classifiers/CostMatrix.html" title="class in weka.classifiers">CostMatrix</A> <B>getCostMatrix</B>()</PRE>
<DL>
<DD>Gets the misclassification cost matrix.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the cost matrix</DL>
</DD>
</DL>
<HR>

<A NAME="setCostMatrix(weka.classifiers.CostMatrix)"><!-- --></A><H3>
setCostMatrix</H3>
<PRE>
public void <B>setCostMatrix</B>(<A HREF="../../../weka/classifiers/CostMatrix.html" title="class in weka.classifiers">CostMatrix</A>&nbsp;newCostMatrix)</PRE>
<DL>
<DD>Sets the misclassification cost matrix.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>newCostMatrix</CODE> - the cost matrix</DL>
</DD>
</DL>
<HR>

<A NAME="getCapabilities()"><!-- --></A><H3>
getCapabilities</H3>
<PRE>
public <A HREF="../../../weka/core/Capabilities.html" title="class in weka.core">Capabilities</A> <B>getCapabilities</B>()</PRE>
<DL>
<DD>Returns default capabilities of the classifier.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/CapabilitiesHandler.html#getCapabilities()">getCapabilities</A></CODE> in interface <CODE><A HREF="../../../weka/core/CapabilitiesHandler.html" title="interface in weka.core">CapabilitiesHandler</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../weka/classifiers/SingleClassifierEnhancer.html#getCapabilities()">getCapabilities</A></CODE> in class <CODE><A HREF="../../../weka/classifiers/SingleClassifierEnhancer.html" title="class in weka.classifiers">SingleClassifierEnhancer</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the capabilities of this classifier<DT><B>See Also:</B><DD><A HREF="../../../weka/core/Capabilities.html" title="class in weka.core"><CODE>Capabilities</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="buildClassifier(weka.core.Instances)"><!-- --></A><H3>
buildClassifier</H3>
<PRE>
public void <B>buildClassifier</B>(<A HREF="../../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;data)
                     throws java.lang.Exception</PRE>
<DL>
<DD>Builds the model of the base learner.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/classifiers/Classifier.html#buildClassifier(weka.core.Instances)">buildClassifier</A></CODE> in class <CODE><A HREF="../../../weka/classifiers/Classifier.html" title="class in weka.classifiers">Classifier</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - the training data
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if the classifier could not be built successfully</DL>
</DD>
</DL>
<HR>

<A NAME="distributionForInstance(weka.core.Instance)"><!-- --></A><H3>
distributionForInstance</H3>
<PRE>
public double[] <B>distributionForInstance</B>(<A HREF="../../../weka/core/Instance.html" title="class in weka.core">Instance</A>&nbsp;instance)
                                 throws java.lang.Exception</PRE>
<DL>
<DD>Returns class probabilities. When minimum expected cost approach is chosen,
 returns probability one for class with the minimum expected misclassification
 cost. Otherwise it returns the probability distribution returned by
 the base classifier.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../weka/classifiers/Classifier.html#distributionForInstance(weka.core.Instance)">distributionForInstance</A></CODE> in class <CODE><A HREF="../../../weka/classifiers/Classifier.html" title="class in weka.classifiers">Classifier</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>instance</CODE> - the instance to be classified
<DT><B>Returns:</B><DD>the computed distribution for the given instance
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if instance could not be classified
 successfully</DL>
</DD>
</DL>
<HR>

<A NAME="graphType()"><!-- --></A><H3>
graphType</H3>
<PRE>
public int <B>graphType</B>()</PRE>
<DL>
<DD>Returns the type of graph this classifier
  represents.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/Drawable.html#graphType()">graphType</A></CODE> in interface <CODE><A HREF="../../../weka/core/Drawable.html" title="interface in weka.core">Drawable</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the type of graph this classifier represents</DL>
</DD>
</DL>
<HR>

<A NAME="graph()"><!-- --></A><H3>
graph</H3>
<PRE>
public java.lang.String <B>graph</B>()
                       throws java.lang.Exception</PRE>
<DL>
<DD>Returns graph describing the classifier (if possible).
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/Drawable.html#graph()">graph</A></CODE> in interface <CODE><A HREF="../../../weka/core/Drawable.html" title="interface in weka.core">Drawable</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the graph of the classifier in dotty format
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if the classifier cannot be graphed</DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD>Output a representation of this classifier
<P>
<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>a string representation of the classifier</DL>
</DD>
</DL>
<HR>

<A NAME="getRevision()"><!-- --></A><H3>
getRevision</H3>
<PRE>
public java.lang.String <B>getRevision</B>()</PRE>
<DL>
<DD>Returns the revision string.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/RevisionHandler.html#getRevision()">getRevision</A></CODE> in interface <CODE><A HREF="../../../weka/core/RevisionHandler.html" title="interface in weka.core">RevisionHandler</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the revision</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.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>argv</CODE> - should contain the following arguments:
 -t training file [-T test file] [-c class index]</DL>
</DD>
</DL>
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