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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 1.5.0_10) on Fri Jan 26 16:34:40 NZDT 2007 --><TITLE>CheckAssociator</TITLE><META NAME="keywords" CONTENT="weka.associations.CheckAssociator class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="CheckAssociator";}</SCRIPT><NOSCRIPT></NOSCRIPT></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=2 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="../../help-doc.html"><FONT CLASS="NavBarFont1"><B>Help</B></FONT></A> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="http://www.cs.waikato.ac.nz/ml/weka/" target="_blank"><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/CARuleMiner.html" title="interface in weka.associations"><B>PREV CLASS</B></A> <A HREF="../../weka/associations/ItemSet.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?weka/associations/CheckAssociator.html" target="_top"><B>FRAMES</B></A> <A HREF="CheckAssociator.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: <A HREF="#nested_classes_inherited_from_class_weka.core.CheckScheme">NESTED</A> | 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 CheckAssociator</H2><PRE>java.lang.Object <IMG SRC="../../resources/inherit.gif" ALT="extended by "><A HREF="../../weka/core/Check.html" title="class in weka.core">weka.core.Check</A> <IMG SRC="../../resources/inherit.gif" ALT="extended by "><A HREF="../../weka/core/CheckScheme.html" title="class in weka.core">weka.core.CheckScheme</A> <IMG SRC="../../resources/inherit.gif" ALT="extended by "><B>weka.associations.CheckAssociator</B></PRE><DL><DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../weka/core/OptionHandler.html" title="interface in weka.core">OptionHandler</A></DD></DL><HR><DL><DT><PRE>public class <B>CheckAssociator</B><DT>extends <A HREF="../../weka/core/CheckScheme.html" title="class in weka.core">CheckScheme</A></DL></PRE><P>Class for examining the capabilities and finding problems with associators. If you implement an associators using the WEKA.libraries, you should run the checks on it to ensure robustness and correct operation. Passing all the tests of this object does not mean bugs in the associators don't exist, but this will help find some common ones. <p/> Typical usage: <p/> <code>java weka.associations.CheckAssociator -W associator_name -- associator_options </code><p/> CheckAssociator reports on the following: <ul> <li> Associator abilities <ul> <li> Possible command line options to the associators </li> <li> Whether the associators can predict nominal, numeric, string, date or relational class attributes. </li> <li> Whether the associators can handle numeric predictor attributes </li> <li> Whether the associators can handle nominal predictor attributes </li> <li> Whether the associators can handle string predictor attributes </li> <li> Whether the associators can handle date predictor attributes </li> <li> Whether the associators can handle relational predictor attributes </li> <li> Whether the associators can handle multi-instance data </li> <li> Whether the associators can handle missing predictor values </li> <li> Whether the associators can handle missing class values </li> <li> Whether a nominal associators only handles 2 class problems </li> <li> Whether the associators can handle instance weights </li> </ul> </li> <li> Correct functioning <ul> <li> Correct initialisation during buildAssociations (i.e. no result changes when buildAssociations called repeatedly) </li> <li> Whether the associators alters the data pased to it (number of instances, instance order, instance weights, etc) </li> </ul> </li> <li> Degenerate cases <ul> <li> building associators with zero training instances </li> <li> all but one predictor attribute values missing </li> <li> all predictor attribute values missing </li> <li> all but one class values missing </li> <li> all class values missing </li> </ul> </li> </ul> Running CheckAssociator with the debug option set will output the training dataset for any failed tests.<p/> The <code>weka.associations.AbstractAssociatorTest</code> uses this class to test all the associators. Any changes here, have to be checked in that abstract test class, too. <p/> <!-- options-start --> Valid options are: <p/> <pre> -D Turn on debugging output.</pre> <pre> -S Silent mode - prints nothing to stdout.</pre> <pre> -N <num> The number of instances in the datasets (default 20).</pre> <pre> -nominal <num> The number of nominal attributes (default 2).</pre> <pre> -nominal-values <num> The number of values for nominal attributes (default 1).</pre> <pre> -numeric <num> The number of numeric attributes (default 1).</pre> <pre> -string <num> The number of string attributes (default 1).</pre> <pre> -date <num> The number of date attributes (default 1).</pre> <pre> -relational <num> The number of relational attributes (default 1).</pre> <pre> -num-instances-relational <num> The number of instances in relational/bag attributes (default 10).</pre> <pre> -words <comma-separated-list> The words to use in string attributes.</pre> <pre> -word-separators <chars> The word separators to use in string attributes.</pre> <pre> -W Full name of the associator analysed. eg: weka.associations.Apriori (default weka.associations.Apriori)</pre> <pre> Options specific to associator weka.associations.Apriori: </pre> <pre> -N <required number of rules output> The required number of rules. (default = 10)</pre> <pre> -T <0=confidence | 1=lift | 2=leverage | 3=Conviction> The metric type by which to rank rules. (default = confidence)</pre> <pre> -C <minimum metric score of a rule> The minimum confidence of a rule. (default = 0.9)</pre> <pre> -D <delta for minimum support> The delta by which the minimum support is decreased in each iteration. (default = 0.05)</pre> <pre> -U <upper bound for minimum support> Upper bound for minimum support. (default = 1.0)</pre> <pre> -M <lower bound for minimum support> The lower bound for the minimum support. (default = 0.1)</pre> <pre> -S <significance level> If used, rules are tested for significance at the given level. Slower. (default = no significance testing)</pre> <pre> -I If set the itemsets found are also output. (default = no)</pre> <pre> -R Remove columns that contain all missing values (default = no)</pre> <pre> -V Report progress iteratively. (default = no)</pre> <pre> -A If set class association rules are mined. (default = no)</pre> <pre> -c <the class index> The class index. (default = last)</pre> <!-- options-end --> Options after -- are passed to the designated associator.<p/><P><P><DL><DT><B>Version:</B></DT> <DD>$Revision: 1.3 $</DD><DT><B>Author:</B></DT> <DD>Len Trigg (trigg@cs.waikato.ac.nz), FracPete (fracpete at waikato dot ac dot nz)</DD><DT><B>See Also:</B><DD><A HREF="../../weka/core/TestInstances.html" title="class in weka.core"><CODE>TestInstances</CODE></A></DL><HR><P><!-- ======== NESTED CLASS SUMMARY ======== --><A NAME="nested_class_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Nested Class Summary</B></FONT></TH></TR></TABLE> <A NAME="nested_classes_inherited_from_class_weka.core.CheckScheme"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor"><TH ALIGN="left"><B>Nested classes/interfaces inherited from class weka.core.<A HREF="../../weka/core/CheckScheme.html" title="class in weka.core">CheckScheme</A></B></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><A HREF="../../weka/core/CheckScheme.PostProcessor.html" title="class in weka.core">CheckScheme.PostProcessor</A></CODE></TD></TR></TABLE> <!-- ======== CONSTRUCTOR SUMMARY ======== --><A NAME="constructor_summary"><!-- --></A><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Constructor Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD><CODE><B><A HREF="../../weka/associations/CheckAssociator.html#CheckAssociator()">CheckAssociator</A></B>()</CODE><BR> </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"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Method Summary</B></FONT></TH></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/CheckAssociator.html#doTests()">doTests</A></B>()</CODE><BR> Begin the tests, reporting results to System.out</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../weka/associations/Associator.html" title="class in weka.associations">Associator</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/associations/CheckAssociator.html#getAssociator()">getAssociator</A></B>()</CODE><BR> Get the associator being tested</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.lang.String[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/associations/CheckAssociator.html#getOptions()">getOptions</A></B>()</CODE><BR> Gets the current settings of the CheckAssociator.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> java.util.Enumeration</CODE></FONT></TD><TD><CODE><B><A HREF="../../weka/associations/CheckAssociator.html#listOptions()">listOptions</A></B>()</CODE><BR> Returns an enumeration describing the available options.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static void</CODE></FONT></TD>⌨️ 快捷键说明
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