distribution.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

<A NAME="del(int, weka.core.Instance)"><!-- --></A><H3>
del</H3>
<PRE>
public final void <B>del</B>(int&nbsp;bagIndex,
                      <A HREF="../../../weka/core/Instance.html">Instance</A>&nbsp;instance)
               throws java.lang.Exception</PRE>
<DL>
<DD>Deletes given instance from given bag.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if something goes wrong</DL>
</DD>
</DL>
<HR>

<A NAME="delRange(int, weka.core.Instances, int, int)"><!-- --></A><H3>
delRange</H3>
<PRE>
public final void <B>delRange</B>(int&nbsp;bagIndex,
                           <A HREF="../../../weka/core/Instances.html">Instances</A>&nbsp;source,
                           int&nbsp;startIndex,
                           int&nbsp;lastPlusOne)
                    throws java.lang.Exception</PRE>
<DL>
<DD>Deletes all instances in given range from given bag.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if something goes wrong</DL>
</DD>
</DL>
<HR>

<A NAME="dumpDistribution()"><!-- --></A><H3>
dumpDistribution</H3>
<PRE>
public final java.lang.String <B>dumpDistribution</B>()</PRE>
<DL>
<DD>Prints distribution.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="initialize()"><!-- --></A><H3>
initialize</H3>
<PRE>
public final void <B>initialize</B>()</PRE>
<DL>
<DD>Sets all counts to zero.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="matrix()"><!-- --></A><H3>
matrix</H3>
<PRE>
public final double[][] <B>matrix</B>()</PRE>
<DL>
<DD>Returns matrix with distribution of class values.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="maxBag()"><!-- --></A><H3>
maxBag</H3>
<PRE>
public final int <B>maxBag</B>()</PRE>
<DL>
<DD>Returns index of bag containing maximum number of instances.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="maxClass()"><!-- --></A><H3>
maxClass</H3>
<PRE>
public final int <B>maxClass</B>()</PRE>
<DL>
<DD>Returns class with highest frequency over all bags.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="maxClass(int)"><!-- --></A><H3>
maxClass</H3>
<PRE>
public final int <B>maxClass</B>(int&nbsp;index)</PRE>
<DL>
<DD>Returns class with highest frequency for given bag.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="numBags()"><!-- --></A><H3>
numBags</H3>
<PRE>
public final int <B>numBags</B>()</PRE>
<DL>
<DD>Returns number of bags.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="numClasses()"><!-- --></A><H3>
numClasses</H3>
<PRE>
public final int <B>numClasses</B>()</PRE>
<DL>
<DD>Returns number of classes.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="numCorrect()"><!-- --></A><H3>
numCorrect</H3>
<PRE>
public final double <B>numCorrect</B>()</PRE>
<DL>
<DD>Returns perClass(maxClass()).<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="numCorrect(int)"><!-- --></A><H3>
numCorrect</H3>
<PRE>
public final double <B>numCorrect</B>(int&nbsp;index)</PRE>
<DL>
<DD>Returns perClassPerBag(index,maxClass(index)).<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="numIncorrect()"><!-- --></A><H3>
numIncorrect</H3>
<PRE>
public final double <B>numIncorrect</B>()</PRE>
<DL>
<DD>Returns total-numCorrect().<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="numIncorrect(int)"><!-- --></A><H3>
numIncorrect</H3>
<PRE>
public final double <B>numIncorrect</B>(int&nbsp;index)</PRE>
<DL>
<DD>Returns perBag(index)-numCorrect(index).<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="perClassPerBag(int, int)"><!-- --></A><H3>
perClassPerBag</H3>
<PRE>
public final double <B>perClassPerBag</B>(int&nbsp;bagIndex,
                                   int&nbsp;classIndex)</PRE>
<DL>
<DD>Returns number of (possibly fractional) instances of given class in 
 given bag.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="perBag(int)"><!-- --></A><H3>
perBag</H3>
<PRE>
public final double <B>perBag</B>(int&nbsp;bagIndex)</PRE>
<DL>
<DD>Returns number of (possibly fractional) instances in given bag.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="perClass(int)"><!-- --></A><H3>
perClass</H3>
<PRE>
public final double <B>perClass</B>(int&nbsp;classIndex)</PRE>
<DL>
<DD>Returns number of (possibly fractional) instances of given class.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="laplaceProb(int)"><!-- --></A><H3>
laplaceProb</H3>
<PRE>
public final double <B>laplaceProb</B>(int&nbsp;classIndex)</PRE>
<DL>
<DD>Returns relative frequency of class over all bags with
 Laplace correction.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="laplaceProb(int, int)"><!-- --></A><H3>
laplaceProb</H3>
<PRE>
public final double <B>laplaceProb</B>(int&nbsp;classIndex,
                                int&nbsp;intIndex)</PRE>
<DL>
<DD>Returns relative frequency of class for given bag.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="prob(int)"><!-- --></A><H3>
prob</H3>
<PRE>
public final double <B>prob</B>(int&nbsp;classIndex)</PRE>
<DL>
<DD>Returns relative frequency of class over all bags.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="prob(int, int)"><!-- --></A><H3>
prob</H3>
<PRE>
public final double <B>prob</B>(int&nbsp;classIndex,
                         int&nbsp;intIndex)</PRE>
<DL>
<DD>Returns relative frequency of class for given bag.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="subtract(weka.classifiers.j48.Distribution)"><!-- --></A><H3>
subtract</H3>
<PRE>
public final <A HREF="../../../weka/classifiers/j48/Distribution.html">Distribution</A> <B>subtract</B>(<A HREF="../../../weka/classifiers/j48/Distribution.html">Distribution</A>&nbsp;toSubstract)</PRE>
<DL>
<DD>Subtracts the given distribution from this one. The results
 has only one bag.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="total()"><!-- --></A><H3>
total</H3>
<PRE>
public final double <B>total</B>()</PRE>
<DL>
<DD>Returns total number of (possibly fractional) instances.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="shift(int, int, weka.core.Instance)"><!-- --></A><H3>
shift</H3>
<PRE>
public final void <B>shift</B>(int&nbsp;from,
                        int&nbsp;to,
                        <A HREF="../../../weka/core/Instance.html">Instance</A>&nbsp;instance)
                 throws java.lang.Exception</PRE>
<DL>
<DD>Shifts given instance from one bag to another one.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if something goes wrong</DL>
</DD>
</DL>
<HR>

<A NAME="shiftRange(int, int, weka.core.Instances, int, int)"><!-- --></A><H3>
shiftRange</H3>
<PRE>
public final void <B>shiftRange</B>(int&nbsp;from,
                             int&nbsp;to,
                             <A HREF="../../../weka/core/Instances.html">Instances</A>&nbsp;source,
                             int&nbsp;startIndex,
                             int&nbsp;lastPlusOne)
                      throws java.lang.Exception</PRE>
<DL>
<DD>Shifts all instances in given range from one bag to another one.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if something goes wrong</DL>
</DD>
</DL>
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