c45pruneabledeclist.html

< 数据挖掘--实用机器学习技术及java实现> 一书结合数据挖掘和机器学习的知识,作者陈述了自动挖掘模式的基础理论,并且以java语言实现了具有代表性的各类数据挖掘方法.例如:class

&nbsp;<A NAME="methods_inherited_from_class_weka.classifiers.j48.ClassifierDecList"><!-- --></A>
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<TD><B>Methods inherited from class weka.classifiers.j48.<A HREF="../../../weka/classifiers/j48/ClassifierDecList.html">ClassifierDecList</A></B></TD>
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<TD><CODE><A HREF="../../../weka/classifiers/j48/ClassifierDecList.html#buildDecList(weka.core.Instances, boolean)">buildDecList</A>, <A HREF="../../../weka/classifiers/j48/ClassifierDecList.html#buildDecList(weka.core.Instances, weka.core.Instances, boolean)">buildDecList</A>, <A HREF="../../../weka/classifiers/j48/ClassifierDecList.html#classifyInstance(weka.core.Instance)">classifyInstance</A>, <A HREF="../../../weka/classifiers/j48/ClassifierDecList.html#cleanup(weka.core.Instances)">cleanup</A>, <A HREF="../../../weka/classifiers/j48/ClassifierDecList.html#distributionForInstance(weka.core.Instance)">distributionForInstance</A>, <A HREF="../../../weka/classifiers/j48/ClassifierDecList.html#getNewDecList(weka.core.Instances, weka.core.Instances, boolean)">getNewDecList</A>, <A HREF="../../../weka/classifiers/j48/ClassifierDecList.html#toString()">toString</A>, <A HREF="../../../weka/classifiers/j48/ClassifierDecList.html#weight(weka.core.Instance)">weight</A></CODE></TD>
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<TD><B>Methods inherited from class java.lang.Object</B></TD>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</CODE></TD>
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<A NAME="C45PruneableDecList(weka.classifiers.j48.ModelSelection, double, int)"><!-- --></A><H3>
C45PruneableDecList</H3>
<PRE>
public <B>C45PruneableDecList</B>(<A HREF="../../../weka/classifiers/j48/ModelSelection.html">ModelSelection</A>&nbsp;toSelectLocModel,
                           double&nbsp;cf,
                           int&nbsp;minNum)
                    throws java.lang.Exception</PRE>
<DL>
<DD>Constructor for pruneable tree structure. Stores reference
 to associated training data at each node.<DD><DL>
<DT><B>Parameters:</B><DD><CODE>toSelectLocModel</CODE> - selection method for local splitting model<DD><CODE>cf</CODE> - the confidence factor for pruning<DD><CODE>minNum</CODE> - the minimum number of objects in a leaf<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if something goes wrong</DL>
</DD>
</DL>

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<A NAME="buildRule(weka.core.Instances)"><!-- --></A><H3>
buildRule</H3>
<PRE>
public void <B>buildRule</B>(<A HREF="../../../weka/core/Instances.html">Instances</A>&nbsp;data)
               throws java.lang.Exception</PRE>
<DL>
<DD>Method for building a pruned partial tree.<DD><DL>
<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if something goes wrong</DL>
</DD>
</DL>
<HR>

<A NAME="chooseIndex()"><!-- --></A><H3>
chooseIndex</H3>
<PRE>
public final int <B>chooseIndex</B>()</PRE>
<DL>
<DD>Method for choosing a subset to expand.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../weka/classifiers/j48/ClassifierDecList.html#chooseIndex()">chooseIndex</A></CODE> in class <CODE><A HREF="../../../weka/classifiers/j48/ClassifierDecList.html">ClassifierDecList</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="chooseLastIndex()"><!-- --></A><H3>
chooseLastIndex</H3>
<PRE>
public final int <B>chooseLastIndex</B>()</PRE>
<DL>
<DD>Choose last index (ie. choose rule).<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../weka/classifiers/j48/ClassifierDecList.html#chooseLastIndex()">chooseLastIndex</A></CODE> in class <CODE><A HREF="../../../weka/classifiers/j48/ClassifierDecList.html">ClassifierDecList</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getNewDecList(weka.core.Instances, boolean)"><!-- --></A><H3>
getNewDecList</H3>
<PRE>
protected <A HREF="../../../weka/classifiers/j48/ClassifierDecList.html">ClassifierDecList</A> <B>getNewDecList</B>(<A HREF="../../../weka/core/Instances.html">Instances</A>&nbsp;data,
                                          boolean&nbsp;leaf)
                                   throws java.lang.Exception</PRE>
<DL>
<DD>Returns a newly created tree.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../weka/classifiers/j48/ClassifierDecList.html#getNewDecList(weka.core.Instances, boolean)">getNewDecList</A></CODE> in class <CODE><A HREF="../../../weka/classifiers/j48/ClassifierDecList.html">ClassifierDecList</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if something goes wrong</DL>
</DD>
</DL>
<HR>

<A NAME="pruneEnd()"><!-- --></A><H3>
pruneEnd</H3>
<PRE>
protected void <B>pruneEnd</B>()</PRE>
<DL>
<DD>Prunes the end of the rule.<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../weka/classifiers/j48/ClassifierDecList.html#pruneEnd()">pruneEnd</A></CODE> in class <CODE><A HREF="../../../weka/classifiers/j48/ClassifierDecList.html">ClassifierDecList</A></CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getEstimatedErrorsForLeaf()"><!-- --></A><H3>
getEstimatedErrorsForLeaf</H3>
<PRE>
public double <B>getEstimatedErrorsForLeaf</B>()</PRE>
<DL>
<DD>Computes estimated errors for leaf.</DL>
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