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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><!--NewPage--><HTML><HEAD><!-- Generated by javadoc (build 1.4.2_05) on Mon Mar 07 15:27:04 NZDT 2005 --><TITLE>LabeledItemSet</TITLE><META NAME="keywords" CONTENT="weka.associations.LabeledItemSet class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="LabeledItemSet";}</SCRIPT></HEAD><BODY BGCOLOR="white" onload="windowTitle();"><!-- ========= START OF TOP NAVBAR ======= --><A NAME="navbar_top"><!-- --></A><A HREF="#skip-navbar_top" title="Skip navigation links"></A><TABLE BORDER="0" WIDTH="100%" CELLPADDING="1" CELLSPACING="0" SUMMARY=""><TR><TD COLSPAN=3 BGCOLOR="#EEEEFF" CLASS="NavBarCell1"><A NAME="navbar_top_firstrow"><!-- --></A><TABLE BORDER="0" CELLPADDING="0" CELLSPACING="3" SUMMARY=""> <TR ALIGN="center" VALIGN="top"> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../overview-summary.html"><FONT CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-summary.html"><FONT CLASS="NavBarFont1"><B>Package</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Class</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-tree.html"><FONT CLASS="NavBarFont1"><B>Tree</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../deprecated-list.html"><FONT CLASS="NavBarFont1"><B>Deprecated</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../index-all.html"><FONT CLASS="NavBarFont1"><B>Index</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="../../../Tutorial.pdf"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="http://www.cs.waikato.ac.nz/ml/weka/index.html"><FONT CLASS="NavBarFont1"><B>Weka's home</B></FONT></A> </TD> </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../weka/associations/ItemSet.html" title="class in weka.associations"><B>PREV CLASS</B></A> <A HREF="../../weka/associations/PredictiveApriori.html" title="class in weka.associations"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../index.html" target="_top"><B>FRAMES</B></A> <A HREF="LabeledItemSet.html" target="_top"><B>NO FRAMES</B></A> <SCRIPT type="text/javascript"> <!-- if(window==top) { document.writeln('<A HREF="../../allclasses-noframe.html"><B>All Classes</B></A>'); } //--></SCRIPT><NOSCRIPT> <A HREF="../../allclasses-noframe.html"><B>All Classes</B></A></NOSCRIPT></FONT></TD></TR><TR><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2"> SUMMARY: NESTED | FIELD | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: FIELD | <A HREF="#constructor_detail">CONSTR</A> | <A HREF="#method_detail">METHOD</A></FONT></TD></TR></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><!-- ======== START OF CLASS DATA ======== --><H2><FONT SIZE="-1">weka.associations</FONT><BR>Class LabeledItemSet</H2><PRE>java.lang.Object <IMG SRC="../../resources/inherit.gif" ALT="extended by"><A HREF="../../weka/associations/ItemSet.html" title="class in weka.associations">weka.associations.ItemSet</A> <IMG SRC="../../resources/inherit.gif" ALT="extended by"><B>weka.associations.LabeledItemSet</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD>java.io.Serializable</DD></DL><HR><DL><DT>public class <B>LabeledItemSet</B><DT>extends <A HREF="../../weka/associations/ItemSet.html" title="class in weka.associations">ItemSet</A><DT>implements java.io.Serializable</DL><P>Class for storing a set of items together with a class label. Item sets are stored in a lexicographic order, which is determined by the header information of the set of instances used for generating the set of items. All methods in this class assume that item sets are stored in lexicographic order. The class provides the methods used for item sets in class association rule mining. Because every item set knows its class label the training set can be splitted up virtually.<P><P><DL><DT><B>Version:</B></DT> <DD>$Revision: 1.2 $</DD><DT><B>Author:</B></DT> <DD>Stefan Mutter (mutter@cs.waikato.ac.nz)</DD><DT><B>See Also:</B><DD><A HREF="../../serialized-form.html#weka.associations.LabeledItemSet">Serialized Form</A></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><!-- =========== FIELD SUMMARY =========== --><!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../weka/associations/LabeledItemSet.html#LabeledItemSet(int, int)">LabeledItemSet</A></B>(int totalTrans, int classLabel)</CODE><BR> Constructor</TD></TR></TABLE> <!-- ========== METHOD SUMMARY =========== --><A NAME="method_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=2><FONT SIZE="+2"><B>Method Summary</B></FONT></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/associations/LabeledItemSet.html#deleteItemSets(weka.core.FastVector, int, int)">deleteItemSets</A></B>(<A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A> itemSets, int minSupport, int maxSupport)</CODE><BR> Deletes all item sets that don't have minimum support and have more than maximum support</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/associations/LabeledItemSet.html#divide(weka.core.Instances, boolean)">divide</A></B>(<A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A> instances, boolean invert)</CODE><BR> Splits the class attribute away.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/associations/LabeledItemSet.html#equalCondset(java.lang.Object)">equalCondset</A></B>(java.lang.Object itemSet)</CODE><BR> Compares two item sets</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/associations/LabeledItemSet.html#equals(java.lang.Object)">equals</A></B>(java.lang.Object itemSet)</CODE><BR> Tests if two item sets are equal.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A>[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/associations/LabeledItemSet.html#generateRules(double, boolean)">generateRules</A></B>(double minConfidence, boolean noPrune)</CODE><BR> Generates rules out of item sets</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static java.util.Hashtable</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/associations/LabeledItemSet.html#getHashtable(weka.core.FastVector, int)">getHashtable</A></B>(<A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A> itemSets, int initialSize)</CODE><BR> Return a hashtable filled with the given item sets.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/associations/LabeledItemSet.html#mergeAllItemSets(weka.core.FastVector, int, int)">mergeAllItemSets</A></B>(<A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A> itemSets, int size, int totalTrans)</CODE><BR> Merges all item sets in the set of (k-1)-item sets to create the (k)-item sets and updates the counters.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/associations/LabeledItemSet.html#pruneItemSets(weka.core.FastVector, java.util.Hashtable)">pruneItemSets</A></B>(<A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A> toPrune, java.util.Hashtable kMinusOne)</CODE><BR> Prunes a set of (k)-item sets using the given (k-1)-item sets.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/associations/LabeledItemSet.html#singletons(weka.core.Instances, weka.core.Instances)">singletons</A></B>(<A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A> instancesNoClass, <A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A> classes)</CODE><BR> Converts the header info of the given set of instances into a set of item sets (singletons).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> int</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/associations/LabeledItemSet.html#support()">support</A></B>()</CODE><BR> Outputs the support for an item set.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> void</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/associations/LabeledItemSet.html#upDateCounter(weka.core.Instance, weka.core.Instance)">upDateCounter</A></B>(<A HREF="../../weka/core/Instance.html" title="class in weka.core">Instance</A> instanceNoClass, <A HREF="../../weka/core/Instance.html" title="class in weka.core">Instance</A> instanceClass)</CODE><BR> Updates counter of item set with respect to given transaction.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/associations/LabeledItemSet.html#upDateCounters(weka.core.FastVector, weka.core.Instances, weka.core.Instances)">upDateCounters</A></B>(<A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A> itemSets, <A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A> instancesNoClass, <A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A> instancesClass)</CODE><BR> Updates counter of a specific item set</TD></TR></TABLE> <A NAME="methods_inherited_from_class_weka.associations.ItemSet"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class weka.associations.<A HREF="../../weka/associations/ItemSet.html" title="class in weka.associations">ItemSet</A></B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../weka/associations/ItemSet.html#containedBy(weka.core.Instance)">containedBy</A>, <A HREF="../../weka/associations/ItemSet.html#counter()">counter</A>, <A HREF="../../weka/associations/ItemSet.html#hashCode()">hashCode</A>, <A HREF="../../weka/associations/ItemSet.html#itemAt(int)">itemAt</A>, <A HREF="../../weka/associations/ItemSet.html#items()">items</A>, <A HREF="../../weka/associations/ItemSet.html#pruneRules(weka.core.FastVector[], double)">pruneRules</A>, <A HREF="../../weka/associations/ItemSet.html#setCounter(int)">setCounter</A>, <A HREF="../../weka/associations/ItemSet.html#setItem(int[])">setItem</A>, <A HREF="../../weka/associations/ItemSet.html#setItemAt(int, int)">setItemAt</A>, <A HREF="../../weka/associations/ItemSet.html#singletons(weka.core.Instances)">singletons</A>, <A HREF="../../weka/associations/ItemSet.html#toString(weka.core.Instances)">toString</A>, <A HREF="../../weka/associations/ItemSet.html#upDateCounter(weka.core.Instance)">upDateCounter</A>, <A HREF="../../weka/associations/ItemSet.html#upDateCounters(weka.core.FastVector, weka.core.Instances)">upDateCounters</A></CODE></TD></TR></TABLE> <A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TD><B>Methods inherited from class java.lang.Object</B></TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE>getClass, notify, notifyAll, toString, wait, wait, wait</CODE></TD></TR></TABLE> <P><!-- ============ FIELD DETAIL =========== --><!-- ========= CONSTRUCTOR DETAIL ======== --><A NAME="constructor_detail"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TD COLSPAN=1><FONT SIZE="+2"><B>Constructor Detail</B></FONT></TD></TR></TABLE><A NAME="LabeledItemSet(int, int)"><!-- --></A><H3>LabeledItemSet</H3><PRE>public <B>LabeledItemSet</B>(int totalTrans, int classLabel)</PRE><DL>⌨️ 快捷键说明
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