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

<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../weka/classifiers/j48/Distribution.html#numIncorrect()">numIncorrect</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns total-numCorrect().</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../weka/classifiers/j48/Distribution.html#numIncorrect(int)">numIncorrect</A></B>(int&nbsp;index)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns perBag(index)-numCorrect(index).</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../weka/classifiers/j48/Distribution.html#perBag(int)">perBag</A></B>(int&nbsp;bagIndex)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns number of (possibly fractional) instances in given bag.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../weka/classifiers/j48/Distribution.html#perClass(int)">perClass</A></B>(int&nbsp;classIndex)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns number of (possibly fractional) instances of given class.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../weka/classifiers/j48/Distribution.html#perClassPerBag(int, int)">perClassPerBag</A></B>(int&nbsp;bagIndex,
               int&nbsp;classIndex)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns number of (possibly fractional) instances of given class in 
 given bag.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../weka/classifiers/j48/Distribution.html#prob(int)">prob</A></B>(int&nbsp;classIndex)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns relative frequency of class over all bags.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../weka/classifiers/j48/Distribution.html#prob(int, int)">prob</A></B>(int&nbsp;classIndex,
     int&nbsp;intIndex)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns relative frequency of class for given bag.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../weka/classifiers/j48/Distribution.html#shift(int, int, weka.core.Instance)">shift</A></B>(int&nbsp;from,
      int&nbsp;to,
      <A HREF="../../../weka/core/Instance.html">Instance</A>&nbsp;instance)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Shifts given instance from one bag to another one.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../weka/classifiers/j48/Distribution.html#shiftRange(int, int, weka.core.Instances, int, int)">shiftRange</A></B>(int&nbsp;from,
           int&nbsp;to,
           <A HREF="../../../weka/core/Instances.html">Instances</A>&nbsp;source,
           int&nbsp;startIndex,
           int&nbsp;lastPlusOne)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Shifts all instances in given range from one bag to another one.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../weka/classifiers/j48/Distribution.html#sub(int, weka.core.Instance)">sub</A></B>(int&nbsp;bagIndex,
    <A HREF="../../../weka/core/Instance.html">Instance</A>&nbsp;instance)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Subtracts given instance from given bag.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../../weka/classifiers/j48/Distribution.html">Distribution</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../weka/classifiers/j48/Distribution.html#subtract(weka.classifiers.j48.Distribution)">subtract</A></B>(<A HREF="../../../weka/classifiers/j48/Distribution.html">Distribution</A>&nbsp;toSubstract)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Subtracts the given distribution from this one.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../weka/classifiers/j48/Distribution.html#total()">total</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns total number of (possibly fractional) instances.</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TD><B>Methods inherited from class java.lang.Object</B></TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>

<!-- ============ FIELD DETAIL =========== -->


<!-- ========= CONSTRUCTOR DETAIL ======== -->

<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TD>
</TR>
</TABLE>

<A NAME="Distribution(int, int)"><!-- --></A><H3>
Distribution</H3>
<PRE>
public <B>Distribution</B>(int&nbsp;numBags,
                    int&nbsp;numClasses)</PRE>
<DL>
<DD>Creates and initializes a new distribution.</DL>
<HR>

<A NAME="Distribution(double[][])"><!-- --></A><H3>
Distribution</H3>
<PRE>
public <B>Distribution</B>(double[][]&nbsp;table)</PRE>
<DL>
<DD>Creates and initializes a new distribution using the given
 array. WARNING: it just copies a reference to this array.</DL>
<HR>

<A NAME="Distribution(weka.core.Instances)"><!-- --></A><H3>
Distribution</H3>
<PRE>
public <B>Distribution</B>(<A HREF="../../../weka/core/Instances.html">Instances</A>&nbsp;source)
             throws java.lang.Exception</PRE>
<DL>
<DD>Creates a distribution with only one bag according
 to instances in source.<DD><DL>
<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if something goes wrong</DL>
</DD>
</DL>
<HR>

<A NAME="Distribution(weka.core.Instances, weka.classifiers.j48.ClassifierSplitModel)"><!-- --></A><H3>
Distribution</H3>
<PRE>
public <B>Distribution</B>(<A HREF="../../../weka/core/Instances.html">Instances</A>&nbsp;source,
                    <A HREF="../../../weka/classifiers/j48/ClassifierSplitModel.html">ClassifierSplitModel</A>&nbsp;modelToUse)
             throws java.lang.Exception</PRE>
<DL>
<DD>Creates a distribution according to given instances and
 split model.<DD><DL>
<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if something goes wrong</DL>
</DD>
</DL>
<HR>

<A NAME="Distribution(weka.classifiers.j48.Distribution)"><!-- --></A><H3>
Distribution</H3>
<PRE>
public <B>Distribution</B>(<A HREF="../../../weka/classifiers/j48/Distribution.html">Distribution</A>&nbsp;toMerge)</PRE>
<DL>
<DD>Creates distribution with only one bag by merging all
 bags of given distribution.</DL>
<HR>

<A NAME="Distribution(weka.classifiers.j48.Distribution, int)"><!-- --></A><H3>
Distribution</H3>
<PRE>
public <B>Distribution</B>(<A HREF="../../../weka/classifiers/j48/Distribution.html">Distribution</A>&nbsp;toMerge,
                    int&nbsp;index)</PRE>
<DL>
<DD>Creates distribution with two bags by merging all bags apart of
 the indicated one.</DL>

<!-- ============ METHOD DETAIL ========== -->

<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" CELLPADDING="3" CELLSPACING="0" WIDTH="100%">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TD COLSPAN=1><FONT SIZE="+2">
<B>Method Detail</B></FONT></TD>
</TR>
</TABLE>

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

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

<A NAME="actualNumClasses(int)"><!-- --></A><H3>
actualNumClasses</H3>
<PRE>
public final int <B>actualNumClasses</B>(int&nbsp;bagIndex)</PRE>
<DL>
<DD>Returns number of classes actually occuring in given bag.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="add(int, weka.core.Instance)"><!-- --></A><H3>
add</H3>
<PRE>
public final void <B>add</B>(int&nbsp;bagIndex,
                      <A HREF="../../../weka/core/Instance.html">Instance</A>&nbsp;instance)
               throws java.lang.Exception</PRE>
<DL>
<DD>Adds given instance to 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="sub(int, weka.core.Instance)"><!-- --></A><H3>
sub</H3>
<PRE>
public final void <B>sub</B>(int&nbsp;bagIndex,
                      <A HREF="../../../weka/core/Instance.html">Instance</A>&nbsp;instance)
               throws java.lang.Exception</PRE>
<DL>
<DD>Subtracts 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="add(int, double[])"><!-- --></A><H3>
add</H3>
<PRE>
public final void <B>add</B>(int&nbsp;bagIndex,
                      double[]&nbsp;counts)</PRE>
<DL>
<DD>Adds counts to given bag.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="addInstWithUnknown(weka.core.Instances, int)"><!-- --></A><H3>
addInstWithUnknown</H3>
<PRE>
public final void <B>addInstWithUnknown</B>(<A HREF="../../../weka/core/Instances.html">Instances</A>&nbsp;source,
                                     int&nbsp;attIndex)
                              throws java.lang.Exception</PRE>
<DL>
<DD>Adds all instances with unknown values for given attribute, weighted
 according to frequency of instances in each 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="addRange(int, weka.core.Instances, int, int)"><!-- --></A><H3>
addRange</H3>
<PRE>
public final void <B>addRange</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>Adds all instances in given range to 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="addWeights(weka.core.Instance, double[])"><!-- --></A><H3>
addWeights</H3>
<PRE>
public final void <B>addWeights</B>(<A HREF="../../../weka/core/Instance.html">Instance</A>&nbsp;instance,
                             double[]&nbsp;weights)
                      throws java.lang.Exception</PRE>
<DL>
<DD>Adds given instance to all bags weighting it according to given weights.<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="check(double)"><!-- --></A><H3>
check</H3>
<PRE>
public final boolean <B>check</B>(double&nbsp;minNoObj)</PRE>
<DL>
<DD>Checks if at least two bags contain a minimum number of instances.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="clone()"><!-- --></A><H3>
clone</H3>
<PRE>
public final java.lang.Object <B>clone</B>()</PRE>
<DL>
<DD>Clones distribution (Deep copy of distribution).<DD><DL>
<DT><B>Overrides:</B><DD><CODE>clone</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
</DL>
<HR>