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<DD>Constructor
<P>
<DT><B>Parameters:</B><DD><CODE>totalTrans</CODE> - the total number of transactions<DD><CODE>classLabel</CODE> - the class lebel</DL>

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<B>Method Detail</B></FONT></TD>
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<A NAME="deleteItemSets(weka.core.FastVector, int, int)"><!-- --></A><H3>
deleteItemSets</H3>
<PRE>
public static <A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A> <B>deleteItemSets</B>(<A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A>&nbsp;itemSets,
                                        int&nbsp;minSupport,
                                        int&nbsp;maxSupport)</PRE>
<DL>
<DD>Deletes all item sets that don't have minimum support and have more than maximum support
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>maxSupport</CODE> - the maximum support<DD><CODE>itemSets</CODE> - the set of item sets to be pruned<DD><CODE>minSupport</CODE> - the minimum number of transactions to be covered
<DT><B>Returns:</B><DD>the reduced set of item sets</DL>
</DD>
</DL>
<HR>

<A NAME="equals(java.lang.Object)"><!-- --></A><H3>
equals</H3>
<PRE>
public final boolean <B>equals</B>(java.lang.Object&nbsp;itemSet)</PRE>
<DL>
<DD>Tests if two item sets are equal.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../weka/associations/ItemSet.html#equals(java.lang.Object)">equals</A></CODE> in class <CODE><A HREF="../../weka/associations/ItemSet.html" title="class in weka.associations">ItemSet</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>itemSet</CODE> - another item set
<DT><B>Returns:</B><DD>true if this item set contains the same items as the given one</DL>
</DD>
</DL>
<HR>

<A NAME="equalCondset(java.lang.Object)"><!-- --></A><H3>
equalCondset</H3>
<PRE>
public final boolean <B>equalCondset</B>(java.lang.Object&nbsp;itemSet)</PRE>
<DL>
<DD>Compares two item sets
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>itemSet</CODE> - an item set
<DT><B>Returns:</B><DD>true if the the item sets are equal, false otherwise</DL>
</DD>
</DL>
<HR>

<A NAME="getHashtable(weka.core.FastVector, int)"><!-- --></A><H3>
getHashtable</H3>
<PRE>
public static java.util.Hashtable <B>getHashtable</B>(<A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A>&nbsp;itemSets,
                                               int&nbsp;initialSize)</PRE>
<DL>
<DD>Return a hashtable filled with the given item sets.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>itemSets</CODE> - the set of item sets to be used for filling the hash table<DD><CODE>initialSize</CODE> - the initial size of the hashtable
<DT><B>Returns:</B><DD>the generated hashtable</DL>
</DD>
</DL>
<HR>

<A NAME="mergeAllItemSets(weka.core.FastVector, int, int)"><!-- --></A><H3>
mergeAllItemSets</H3>
<PRE>
public static <A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A> <B>mergeAllItemSets</B>(<A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A>&nbsp;itemSets,
                                          int&nbsp;size,
                                          int&nbsp;totalTrans)</PRE>
<DL>
<DD>Merges all item sets in the set of (k-1)-item sets
 to create the (k)-item sets and updates the counters.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>totalTrans</CODE> - the total number of transactions<DD><CODE>itemSets</CODE> - the set of (k-1)-item sets<DD><CODE>size</CODE> - the value of (k-1)
<DT><B>Returns:</B><DD>the generated (k)-item sets</DL>
</DD>
</DL>
<HR>

<A NAME="divide(weka.core.Instances, boolean)"><!-- --></A><H3>
divide</H3>
<PRE>
public static <A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A> <B>divide</B>(<A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;instances,
                               boolean&nbsp;invert)
                        throws java.lang.Exception</PRE>
<DL>
<DD>Splits the class attribute away. Depending on the invert flag, the instances without class attribute or only the class attribute of all instances is returned
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>instances</CODE> - the instances<DD><CODE>invert</CODE> - flag; if true only the class attribute remains, otherweise the class attribute is the only attribute that is deleted.
<DT><B>Returns:</B><DD>Instances without the class attribute or instances with only the class attribute
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - exception if instances cannot be splitted</DL>
</DD>
</DL>
<HR>

<A NAME="singletons(weka.core.Instances, weka.core.Instances)"><!-- --></A><H3>
singletons</H3>
<PRE>
public static <A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A> <B>singletons</B>(<A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;instancesNoClass,
                                    <A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;classes)
                             throws java.lang.Exception</PRE>
<DL>
<DD>Converts the header info of the given set of instances into a set
 of item sets (singletons). The ordering of values in the header file
 determines the lexicographic order. Each item set knows its class label.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>instancesNoClass</CODE> - instances without the class attribute<DD><CODE>classes</CODE> - the values of the class attribute sorted according to instances
<DT><B>Returns:</B><DD>a set of item sets, each containing a single item
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if singletons can't be generated successfully</DL>
</DD>
</DL>
<HR>

<A NAME="pruneItemSets(weka.core.FastVector, java.util.Hashtable)"><!-- --></A><H3>
pruneItemSets</H3>
<PRE>
public static <A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A> <B>pruneItemSets</B>(<A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A>&nbsp;toPrune,
                                       java.util.Hashtable&nbsp;kMinusOne)</PRE>
<DL>
<DD>Prunes a set of (k)-item sets using the given (k-1)-item sets.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>toPrune</CODE> - the set of (k)-item sets to be pruned<DD><CODE>kMinusOne</CODE> - the (k-1)-item sets to be used for pruning
<DT><B>Returns:</B><DD>the pruned set of item sets</DL>
</DD>
</DL>
<HR>

<A NAME="support()"><!-- --></A><H3>
support</H3>
<PRE>
public final int <B>support</B>()</PRE>
<DL>
<DD>Outputs the support for an item set.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../weka/associations/ItemSet.html#support()">support</A></CODE> in class <CODE><A HREF="../../weka/associations/ItemSet.html" title="class in weka.associations">ItemSet</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the support</DL>
</DD>
</DL>
<HR>

<A NAME="upDateCounter(weka.core.Instance, weka.core.Instance)"><!-- --></A><H3>
upDateCounter</H3>
<PRE>
public final void <B>upDateCounter</B>(<A HREF="../../weka/core/Instance.html" title="class in weka.core">Instance</A>&nbsp;instanceNoClass,
                                <A HREF="../../weka/core/Instance.html" title="class in weka.core">Instance</A>&nbsp;instanceClass)</PRE>
<DL>
<DD>Updates counter of item set with respect to given transaction.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>instanceNoClass</CODE> - instances without the class attribute<DD><CODE>instanceClass</CODE> - the values of the class attribute sorted according to instances</DL>
</DD>
</DL>
<HR>

<A NAME="upDateCounters(weka.core.FastVector, weka.core.Instances, weka.core.Instances)"><!-- --></A><H3>
upDateCounters</H3>
<PRE>
public static void <B>upDateCounters</B>(<A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A>&nbsp;itemSets,
                                  <A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;instancesNoClass,
                                  <A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;instancesClass)</PRE>
<DL>
<DD>Updates counter of a specific item set
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>itemSets</CODE> - an item sets<DD><CODE>instancesNoClass</CODE> - instances without the class attribute<DD><CODE>instancesClass</CODE> - the values of the class attribute sorted according to instances</DL>
</DD>
</DL>
<HR>

<A NAME="generateRules(double, boolean)"><!-- --></A><H3>
generateRules</H3>
<PRE>
public final <A HREF="../../weka/core/FastVector.html" title="class in weka.core">FastVector</A>[] <B>generateRules</B>(double&nbsp;minConfidence,
                                        boolean&nbsp;noPrune)</PRE>
<DL>
<DD>Generates rules out of item sets
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>minConfidence</CODE> - the minimum confidence<DD><CODE>noPrune</CODE> - flag indicating whether the rules are pruned accoridng to the minimum confidence value
<DT><B>Returns:</B><DD>a set of rules</DL>
</DD>
</DL>
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