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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 Mon Jul 14 01:36:54 CEST 2008 --><TITLE>com.rapidminer.tools.math (RapidMiner Class Documentation)</TITLE><META NAME="keywords" CONTENT="com.rapidminer.tools.math package"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="com.rapidminer.tools.math (RapidMiner Class Documentation)";}</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" 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NAVBAR ========= --><HR><H2>Package com.rapidminer.tools.math</H2>Several tool classes for mathematical operations.<P><B>See:</B><BR> <A HREF="#package_description"><B>Description</B></A><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>Interface Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/PeakFinder.html" title="interface in com.rapidminer.tools.math">PeakFinder</A></B></TD><TD>PeakFinder are objects which searches peaks in a given series of values.</TD></TR></TABLE> <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="../../../../com/rapidminer/tools/math/AnovaCalculator.html" title="class in com.rapidminer.tools.math">AnovaCalculator</A></B></TD><TD>Determines if the null hypothesis (all actual mean values are the same) holds for the given values.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/AnovaCalculator.AnovaSignificanceTestResult.html" title="class in com.rapidminer.tools.math">AnovaCalculator.AnovaSignificanceTestResult</A></B></TD><TD> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/Averagable.html" title="class in com.rapidminer.tools.math">Averagable</A></B></TD><TD>Superclass for all objects which can be averaged.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/AverageVector.html" title="class in com.rapidminer.tools.math">AverageVector</A></B></TD><TD>Handles several averagables.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/BinaryPeakFinder.html" title="class in com.rapidminer.tools.math">BinaryPeakFinder</A></B></TD><TD> Generates the amplitude and index point of the highest peaks in the series.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/Complex.html" title="class in com.rapidminer.tools.math">Complex</A></B></TD><TD>A class for complex numbers which consists of a real and an imaginary part.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/ContingencyTableTools.html" title="class in com.rapidminer.tools.math">ContingencyTableTools</A></B></TD><TD>This class provides some helper tool for calculations around contingency tables like chi-squared tests etc.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/FastFourierTransform.html" title="class in com.rapidminer.tools.math">FastFourierTransform</A></B></TD><TD> Performs a FastFourierTransform on an array of complex values.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/FDistribution.html" title="class in com.rapidminer.tools.math">FDistribution</A></B></TD><TD>The FDistribution depends on two given degrees of freedom.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/LiftDataGenerator.html" title="class in com.rapidminer.tools.math">LiftDataGenerator</A></B></TD><TD>Helper class containing some methods for Lift plots.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/LinearRegression.html" title="class in com.rapidminer.tools.math">LinearRegression</A></B></TD><TD>This class can be used to calculate the coefficients of a (weighted) linear regression.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/MathFunctions.html" title="class in com.rapidminer.tools.math">MathFunctions</A></B></TD><TD>This class provides mathematical functions not already provided by <tt>java.lang.Math</tt>: <tt>tanh()</tt> : tangens hyperbolicus, <i>y = tanh(x) = (e^x - e^-x) / (e^x + e^-x)</i> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/Peak.html" title="class in com.rapidminer.tools.math">Peak</A></B></TD><TD>A peak with a index and a value.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/ROCData.html" title="class in com.rapidminer.tools.math">ROCData</A></B></TD><TD>This container holds all ROC data points for a single ROC curve.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/ROCDataGenerator.html" title="class in com.rapidminer.tools.math">ROCDataGenerator</A></B></TD><TD>Helper class containing some methods for ROC plots, threshold finding and area under curve calculation.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/ROCPoint.html" title="class in com.rapidminer.tools.math">ROCPoint</A></B></TD><TD>Objects of this class hold all information about a single ROC data point.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/RunVector.html" title="class in com.rapidminer.tools.math">RunVector</A></B></TD><TD>Collects the average vectors of a run.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/SignificanceTestResult.html" title="class in com.rapidminer.tools.math">SignificanceTestResult</A></B></TD><TD>This class encapsulates the result of a statistical significance test.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/SimplePeakFinder.html" title="class in com.rapidminer.tools.math">SimplePeakFinder</A></B></TD><TD>This simple implementation returns a peak if the specified number of neighbors is smaller than the current value.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/SpectrumFilter.html" title="class in com.rapidminer.tools.math">SpectrumFilter</A></B></TD><TD>Creates a series of peaks (a spectrum) from the series of complex values calculated for example by a fourier transform.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/StringToMatrixConverter.html" title="class in com.rapidminer.tools.math">StringToMatrixConverter</A></B></TD><TD>This class provides functions to convert a matrix given in single line Matlab format to standard matrix representation and vice versa.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/TestGroup.html" title="class in com.rapidminer.tools.math">TestGroup</A></B></TD><TD>Helper class containing all information about a group, i.e. the number of elements, the mean and variance value.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/WeightedConfidenceAndLabel.html" title="class in com.rapidminer.tools.math">WeightedConfidenceAndLabel</A></B></TD><TD>Helper class for finding thresholds for cost sensitive learning or calculating the AUC performance criterion.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/WindowFunction.html" title="class in com.rapidminer.tools.math">WindowFunction</A></B></TD><TD>Window functions apply a weight to each value of a value series depending on the length of the series.</TD></TR></TABLE> <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>Exception Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD WIDTH="15%"><B><A HREF="../../../../com/rapidminer/tools/math/SignificanceCalculationException.html" title="class in com.rapidminer.tools.math">SignificanceCalculationException</A></B></TD><TD>This exception is thrown during the calculation of significance values like paired t-tests or ANOVA.</TD></TR></TABLE> <P><A NAME="package_description"><!-- --></A><H2>Package com.rapidminer.tools.math Description</H2><P>Several tool classes for mathematical operations.<P><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 CLASS="NavBarFont1"><B>Overview</B></FONT></A> </TD> <TD BGCOLOR="#FFFFFF" CLASS="NavBarCell1Rev"> <FONT CLASS="NavBarFont1Rev"><B>Package</B></FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <FONT CLASS="NavBarFont1">Class</FONT> </TD> <TD BGCOLOR="#EEEEFF" CLASS="NavBarCell1"> <A HREF="package-use.html"><FONT CLASS="NavBarFont1"><B>Use</B></FONT></A> </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 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