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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_13) on Tue Jul 15 15:50:02 NZST 2008 --><TITLE>weka.classifiers.evaluation</TITLE><META NAME="keywords" CONTENT="weka.classifiers.evaluation package"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){    parent.document.title="weka.classifiers.evaluation";}</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" 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HREF="http://www.cs.waikato.ac.nz/ml/weka/" target="_blank"><FONT CLASS="NavBarFont1"><B>Weka's home</B></FONT></A>&nbsp;</TD>  </TR></TABLE></TD><TD ALIGN="right" VALIGN="top" ROWSPAN=3><EM></EM></TD></TR><TR><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">&nbsp;<A HREF="../../../weka/classifiers/bayes/net/search/local/package-summary.html"><B>PREV PACKAGE</B></A>&nbsp;&nbsp;<A HREF="../../../weka/classifiers/functions/package-summary.html"><B>NEXT PACKAGE</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2">  <A HREF="../../../index.html?weka/classifiers/evaluation/package-summary.html" target="_top"><B>FRAMES</B></A>  &nbsp;&nbsp;<A HREF="package-summary.html" target="_top"><B>NO FRAMES</B></A>  &nbsp;&nbsp;<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></TABLE><A NAME="skip-navbar_top"></A><!-- ========= END OF TOP NAVBAR ========= --><HR><H2>Package weka.classifiers.evaluation</H2><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Interface Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../weka/classifiers/evaluation/Prediction.html" title="interface in weka.classifiers.evaluation">Prediction</A></B></TD><TD>Encapsulates a single evaluatable prediction: the predicted value plus the  actual class value.</TD></TR></TABLE>&nbsp;<P><TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY=""><TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor"><TH ALIGN="left" COLSPAN="2"><FONT SIZE="+2"><B>Class Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../weka/classifiers/evaluation/ConfusionMatrix.html" title="class in weka.classifiers.evaluation">ConfusionMatrix</A></B></TD><TD>Cells of this matrix correspond to counts of the number (or weight) of predictions for each actual value / predicted value combination.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../weka/classifiers/evaluation/CostCurve.html" title="class in weka.classifiers.evaluation">CostCurve</A></B></TD><TD>Generates points illustrating probablity cost tradeoffs that can be  obtained by varying the threshold value between classes.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../weka/classifiers/evaluation/EvaluationUtils.html" title="class in weka.classifiers.evaluation">EvaluationUtils</A></B></TD><TD>Contains utility functions for generating lists of predictions in  various manners.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../weka/classifiers/evaluation/MarginCurve.html" title="class in weka.classifiers.evaluation">MarginCurve</A></B></TD><TD>Generates points illustrating the prediction margin.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../weka/classifiers/evaluation/NominalPrediction.html" title="class in weka.classifiers.evaluation">NominalPrediction</A></B></TD><TD>Encapsulates an evaluatable nominal prediction: the predicted probability distribution plus the actual class value.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../weka/classifiers/evaluation/NumericPrediction.html" title="class in weka.classifiers.evaluation">NumericPrediction</A></B></TD><TD>Encapsulates an evaluatable numeric prediction: the predicted class value plus the actual class value.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../weka/classifiers/evaluation/ThresholdCurve.html" title="class in weka.classifiers.evaluation">ThresholdCurve</A></B></TD><TD>Generates points illustrating prediction tradeoffs that can be obtained by varying the threshold value between classes.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../weka/classifiers/evaluation/TwoClassStats.html" title="class in weka.classifiers.evaluation">TwoClassStats</A></B></TD><TD>Encapsulates performance functions for two-class problems.</TD></TR></TABLE>&nbsp;<P><DL></DL><HR><!-- ======= START OF BOTTOM NAVBAR ====== --><A NAME="navbar_bottom"><!-- --></A><A HREF="#skip-navbar_bottom" 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_bottom_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 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