metacost.html

数据挖掘的最常用工具。由于开源

<HR>

<A NAME="onDemandDirectoryTipText()"><!-- --></A><H3>
onDemandDirectoryTipText</H3>
<PRE>
public java.lang.String <B>onDemandDirectoryTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property
<P>
<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="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>
<HR>

<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>
<HR>

<A NAME="bagSizePercentTipText()"><!-- --></A><H3>
bagSizePercentTipText</H3>
<PRE>
public java.lang.String <B>bagSizePercentTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property
<P>
<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="getBagSizePercent()"><!-- --></A><H3>
getBagSizePercent</H3>
<PRE>
public int <B>getBagSizePercent</B>()</PRE>
<DL>
<DD>Gets the size of each bag, as a percentage of the training set size.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the bag size, as a percentage.</DL>
</DD>
</DL>
<HR>

<A NAME="setBagSizePercent(int)"><!-- --></A><H3>
setBagSizePercent</H3>
<PRE>
public void <B>setBagSizePercent</B>(int&nbsp;newBagSizePercent)</PRE>
<DL>
<DD>Sets the size of each bag, as a percentage of the training set size.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>newBagSizePercent</CODE> - the bag size, as a percentage.</DL>
</DD>
</DL>
<HR>

<A NAME="numIterationsTipText()"><!-- --></A><H3>
numIterationsTipText</H3>
<PRE>
public java.lang.String <B>numIterationsTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property
<P>
<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="setNumIterations(int)"><!-- --></A><H3>
setNumIterations</H3>
<PRE>
public void <B>setNumIterations</B>(int&nbsp;numIterations)</PRE>
<DL>
<DD>Sets the number of bagging iterations
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>numIterations</CODE> - the number of iterations to use</DL>
</DD>
</DL>
<HR>

<A NAME="getNumIterations()"><!-- --></A><H3>
getNumIterations</H3>
<PRE>
public int <B>getNumIterations</B>()</PRE>
<DL>
<DD>Gets the number of bagging iterations
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the maximum number of bagging iterations</DL>
</DD>
</DL>
<HR>

<A NAME="costMatrixTipText()"><!-- --></A><H3>
costMatrixTipText</H3>
<PRE>
public java.lang.String <B>costMatrixTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property
<P>
<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>Classifies a given instance after filtering.
<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 class 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="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 representaiton 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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