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Bisecting_Kmeans
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Bisecting</FONT>
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Class Bisecting_Kmeans</H2>
<PRE>
java.lang.Object
<IMG SRC="../resources/inherit.gif" ALT="extended by "><B>Bisecting.Bisecting_Kmeans</B>
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<DL>
<DT><PRE>public class <B>Bisecting_Kmeans</B><DT>extends java.lang.Object</DL>
</PRE>
<P>
KMeans聚类, 不仅适用于bisecting, 且适用于n-secting
<P>
<P>
<DL>
<DT><B>Version:</B></DT>
<DD>1.0</DD>
<DT><B>Author:</B></DT>
<DD>zg</DD>
</DL>
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<CODE>private static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../Bisecting/Bisecting_Kmeans.html#B">B</A></B></CODE>
<BR>
每次把最大的类分成B个小类</TD>
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<CODE>private java.util.Map<java.lang.Integer,java.util.List<java.lang.Double>></CODE></FONT></TD>
<TD><CODE><B><A HREF="../Bisecting/Bisecting_Kmeans.html#data">data</A></B></CODE>
<BR>
从文件中读取的数据, Map的key是每一行的标号, List是属性列</TD>
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<CODE>private static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../Bisecting/Bisecting_Kmeans.html#ITER">ITER</A></B></CODE>
<BR>
每次分裂时重复选择随机数的次数</TD>
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<CODE>private static int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../Bisecting/Bisecting_Kmeans.html#K">K</A></B></CODE>
<BR>
聚类停止时类的数量</TD>
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<CODE>private static java.lang.Double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../Bisecting/Bisecting_Kmeans.html#MAX_VALUE">MAX_VALUE</A></B></CODE>
<BR>
</TD>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>private java.util.List<java.util.Set<java.lang.Integer>></CODE></FONT></TD>
<TD><CODE><B><A HREF="../Bisecting/Bisecting_Kmeans.html#set_of_eachlevel">set_of_eachlevel</A></B></CODE>
<BR>
每一层的类集合, Set中记录每一行的标号,与Map中的key对应 每次分裂后都会重新排序，保持集合中的第1项(size)最大</TD>
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<TD><CODE><B><A HREF="../Bisecting/Bisecting_Kmeans.html#Bisecting_Kmeans()">Bisecting_Kmeans</A></B>()</CODE>
<BR>
构造函数</TD>
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<CODE> boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../Bisecting/Bisecting_Kmeans.html#IsChanged(java.util.List, java.util.List)">IsChanged</A></B>(java.util.List<java.lang.Double> Old,
java.util.List<java.lang.Double> New)</CODE>
<BR>
根据类中心点坐标判断其是否改变</TD>
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<CODE> java.util.List<java.util.Set<java.lang.Integer>></CODE></FONT></TD>
<TD><CODE><B><A HREF="../Bisecting/Bisecting_Kmeans.html#Iterative(java.util.Set, java.util.List, java.lang.StringBuffer)">Iterative</A></B>(java.util.Set<java.lang.Integer> set,
java.util.List<java.util.List<java.lang.Double>> list_of_center,
java.lang.StringBuffer sb)</CODE>
<BR>
递归调用自身, 直至类不发生变化 还可以优化即每次迭代时只重新计算各点到发生改变的类的中心的距离, 并与到当前类中心的距离比较, 若变小则更新, 否则不变</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../Bisecting/Bisecting_Kmeans.html#LoadFile()">LoadFile</A></B>()</CODE>
<BR>
从文件中读取数据</TD>
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<CODE>static void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../Bisecting/Bisecting_Kmeans.html#main(java.lang.String[])">main</A></B>(java.lang.String[] args)</CODE>
<BR>
</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../Bisecting/Bisecting_Kmeans.html#PrintEachLevel(int)">PrintEachLevel</A></B>(int level)</CODE>
<BR>
递归调用, 输出每一层的各个类, 同时分裂该层中最大的类</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../Bisecting/Bisecting_Kmeans.html#Split()">Split</A></B>()</CODE>
<BR>
分裂当前层中最大的类为B个小类</TD>
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<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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