j48graft.html

数据挖掘的最常用工具。由于开源

</DL>
<HR>

<A NAME="prefix()"><!-- --></A><H3>
prefix</H3>
<PRE>
public java.lang.String <B>prefix</B>()
                        throws java.lang.Exception</PRE>
<DL>
<DD>Returns tree in prefix order.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/Matchable.html#prefix()">prefix</A></CODE> in interface <CODE><A HREF="../../../weka/core/Matchable.html" title="interface in weka.core">Matchable</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the tree in prefix order
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if something goes wrong</DL>
</DD>
</DL>
<HR>

<A NAME="toSource(java.lang.String)"><!-- --></A><H3>
toSource</H3>
<PRE>
public java.lang.String <B>toSource</B>(java.lang.String&nbsp;className)
                          throws java.lang.Exception</PRE>
<DL>
<DD>Returns tree as an if-then statement.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/classifiers/Sourcable.html#toSource(java.lang.String)">toSource</A></CODE> in interface <CODE><A HREF="../../../weka/classifiers/Sourcable.html" title="interface in weka.classifiers">Sourcable</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>className</CODE> - the name of the Java class
<DT><B>Returns:</B><DD>the tree as a Java if-then type statement
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if something goes wrong</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.

 Valid options are: <p>

 -U <br>
 Use unpruned tree.<p>

 -C confidence <br>
 Set confidence threshold for pruning. (Default: 0.25) <p>

 -M number <br>
 Set minimum number of instances per leaf. (Default: 2) <p>

 -B <br>
 Use binary splits for nominal attributes. <p>

 -S <br>
 Don't perform subtree raising. <p>

 -L <br>
 Do not clean up after the tree has been built.

 -A <br>
 If set, Laplace smoothing is used for predicted probabilites. 
  (note: this option only affects initial tree; grafting process always uses laplace). <p>

 -E <br>
 Allow relabelling when grafting. <p>
<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><DT><B>Overrides:</B><DD><CODE><A HREF="../../../weka/classifiers/Classifier.html#listOptions()">listOptions</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>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.

   <!-- options-start -->
 Valid options are: <p/>
 
 <pre> -U
  Use unpruned tree.</pre>
 
 <pre> -C &lt;pruning confidence&gt;
  Set confidence threshold for pruning.
  (default 0.25)</pre>
 
 <pre> -M &lt;minimum number of instances&gt;
  Set minimum number of instances per leaf.
  (default 2)</pre>
 
 <pre> -B
  Use binary splits only.</pre>
 
 <pre> -S
  Don't perform subtree raising.</pre>
 
 <pre> -L
  Do not clean up after the tree has been built.</pre>
 
 <pre> -A
  Laplace smoothing for predicted probabilities.  (note: this option only affects initial tree; grafting process always uses laplace).</pre>
 
 <pre> -E
  Relabel when grafting.</pre>
 
   <!-- options-end -->
<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><DT><B>Overrides:</B><DD><CODE><A HREF="../../../weka/classifiers/Classifier.html#setOptions(java.lang.String[])">setOptions</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>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>Gets the current settings of the Classifier.
<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><DT><B>Overrides:</B><DD><CODE><A HREF="../../../weka/classifiers/Classifier.html#getOptions()">getOptions</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>Returns:</B><DD>an array of strings suitable for passing to setOptions</DL>
</DD>
</DL>
<HR>

<A NAME="useLaplaceTipText()"><!-- --></A><H3>
useLaplaceTipText</H3>
<PRE>
public java.lang.String <B>useLaplaceTipText</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="getUseLaplace()"><!-- --></A><H3>
getUseLaplace</H3>
<PRE>
public boolean <B>getUseLaplace</B>()</PRE>
<DL>
<DD>Get the value of useLaplace.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>Value of useLaplace.</DL>
</DD>
</DL>
<HR>

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

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

<A NAME="toSummaryString()"><!-- --></A><H3>
toSummaryString</H3>
<PRE>
public java.lang.String <B>toSummaryString</B>()</PRE>
<DL>
<DD>Returns a superconcise version of the model
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/Summarizable.html#toSummaryString()">toSummaryString</A></CODE> in interface <CODE><A HREF="../../../weka/core/Summarizable.html" title="interface in weka.core">Summarizable</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a summary of the model</DL>
</DD>
</DL>
<HR>

<A NAME="measureTreeSize()"><!-- --></A><H3>
measureTreeSize</H3>
<PRE>
public double <B>measureTreeSize</B>()</PRE>
<DL>
<DD>Returns the size of the tree
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the size of the tree</DL>
</DD>
</DL>
<HR>

<A NAME="measureNumLeaves()"><!-- --></A><H3>
measureNumLeaves</H3>
<PRE>
public double <B>measureNumLeaves</B>()</PRE>
<DL>
<DD>Returns the number of leaves
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

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

<A NAME="measureNumRules()"><!-- --></A><H3>
measureNumRules</H3>
<PRE>
public double <B>measureNumRules</B>()</PRE>
<DL>
<DD>Returns the number of rules (same as number of leaves)
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

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

<A NAME="enumerateMeasures()"><!-- --></A><H3>
enumerateMeasures</H3>
<PRE>
public java.util.Enumeration <B>enumerateMeasures</B>()</PRE>
<DL>
<DD>Returns an enumeration of the additional measure names
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/AdditionalMeasureProducer.html#enumerateMeasures()">enumerateMeasures</A></CODE> in interface <CODE><A HREF="../../../weka/core/AdditionalMeasureProducer.html" title="interface in weka.core">AdditionalMeasureProducer</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>an enumeration of the measure names</DL>
</DD>
</DL>
<HR>

<A NAME="getMeasure(java.lang.String)"><!-- --></A><H3>
getMeasure</H3>
<PRE>
public double <B>getMeasure</B>(java.lang.String&nbsp;additionalMeasureName)</PRE>
<DL>
<DD>Returns the value of the named measure
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/AdditionalMeasureProducer.html#getMeasure(java.lang.String)">getMeasure</A></CODE> in interface <CODE><A HREF="../../../weka/core/AdditionalMeasureProducer.html" title="interface in weka.core">AdditionalMeasureProducer</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>additionalMeasureName</CODE> - the name of the measure to query for its value
<DT><B>Returns:</B><DD>the value of the named measure
<DT><B>Throws:</B>
<DD><CODE>java.lang.IllegalArgumentException</CODE> - if the named measure is not supported</DL>
</DD>
</DL>
<HR>

<A NAME="unprunedTipText()"><!-- --></A><H3>
unprunedTipText</H3>
<PRE>
public java.lang.String <B>unprunedTipText</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="getUnpruned()"><!-- --></A><H3>
getUnpruned</H3>
<PRE>
public boolean <B>getUnpruned</B>()</PRE>
<DL>
<DD>Get the value of unpruned.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>Value of unpruned.</DL>
</DD>
</DL>
<HR>

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

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