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PerformanceMeasure (Java Machine Learning Library 0.0.11)
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net.sf.javaml.classification.evaluation</FONT>
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Class PerformanceMeasure</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>net.sf.javaml.classification.evaluation.PerformanceMeasure</B>
</PRE>
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<DL>
<DT><PRE>public class <B>PerformanceMeasure</B><DT>extends java.lang.Object</DL>
</PRE>
<P>
Class implementing several performance measures commonly used for classification algorithms. Each of these measure can be calculated from four basic values from the classifier. The number of true positives, the number of true negatives, the number of false positives and the number of false negatives. For detailed information and formulas we refer to <a href="http://www.abeel.be/java-ml/index.php/Performance_measures">Java-ML wiki</a>
<P>
<P>
<DL>
<DT><B>Author:</B></DT>
<DD>Thomas Abeel</DD>
</DL>
<HR>
<P>
<!-- =========== FIELD SUMMARY =========== -->
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<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#falseNegatives">falseNegatives</A></B></CODE>
<BR>
The number of false negatives.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#falsePositives">falsePositives</A></B></CODE>
<BR>
The number of false positives.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#trueNegatives">trueNegatives</A></B></CODE>
<BR>
The number of true negatives.</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#truePositives">truePositives</A></B></CODE>
<BR>
The number of true positives.</TD>
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<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#PerformanceMeasure()">PerformanceMeasure</A></B>()</CODE>
<BR>
Default constructor for a new performance measure, all values (TP,TN,FP and FN) will be set zero</TD>
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<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#PerformanceMeasure(double, double, double, double)">PerformanceMeasure</A></B>(double tp,
double tn,
double fp,
double fn)</CODE>
<BR>
Constructs a new performance measure using the supplied arguments.</TD>
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<!-- ========== METHOD SUMMARY =========== -->
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<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#getAccuracy()">getAccuracy</A></B>()</CODE>
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</TD>
</TR>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#getCorrelation()">getCorrelation</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#getCorrelationCoefficient()">getCorrelationCoefficient</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#getCost()">getCost</A></B>()</CODE>
<BR>
</TD>
</TR>
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<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#getErrorRate()">getErrorRate</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#getFMeasure()">getFMeasure</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#getFMeasure(int)">getFMeasure</A></B>(int beta)</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#getFNRate()">getFNRate</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#getFPRate()">getFPRate</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#getPrecision()">getPrecision</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#getQ9()">getQ9</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#getRecall()">getRecall</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#getTNRate()">getTNRate</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#getTotal()">getTotal</A></B>()</CODE>
<BR>
</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#getTPRate()">getTPRate</A></B>()</CODE>
<BR>
</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="../../../../../net/sf/javaml/classification/evaluation/PerformanceMeasure.html#toString()">toString</A></B>()</CODE>
<BR>
</TD>
</TR>
</TABLE>
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<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
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<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait</CODE></TD>
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</TABLE>
<P>
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<A NAME="truePositives"><!-- --></A><H3>
truePositives</H3>
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