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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 01:33:50 CEST 2008 --><TITLE>FeatureGenerator (RapidMiner Class Documentation)</TITLE><META NAME="keywords" CONTENT="com.rapidminer.generator.FeatureGenerator class"><LINK REL ="stylesheet" TYPE="text/css" HREF="../../../stylesheet.css" TITLE="Style"><SCRIPT type="text/javascript">function windowTitle(){ parent.document.title="FeatureGenerator (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" 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="class-use/FeatureGenerator.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 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> </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="../../../com/rapidminer/generator/ExponentialFunctionGenerator.html" title="class in com.rapidminer.generator"><B>PREV CLASS</B></A> <A HREF="../../../com/rapidminer/generator/FloorCeilGenerator.html" title="class in com.rapidminer.generator"><B>NEXT CLASS</B></A></FONT></TD><TD BGCOLOR="white" CLASS="NavBarCell2"><FONT SIZE="-2"> <A HREF="../../../index.html?com/rapidminer/generator/FeatureGenerator.html" target="_top"><B>FRAMES</B></A> <A HREF="FeatureGenerator.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: NESTED | <A HREF="#field_summary">FIELD</A> | <A HREF="#constructor_summary">CONSTR</A> | <A HREF="#method_summary">METHOD</A></FONT></TD><TD VALIGN="top" CLASS="NavBarCell3"><FONT SIZE="-2">DETAIL: <A HREF="#field_detail">FIELD</A> | <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">com.rapidminer.generator</FONT><BR>Class FeatureGenerator</H2><PRE>java.lang.Object <IMG SRC="../../../resources/inherit.gif" ALT="extended by "><B>com.rapidminer.generator.FeatureGenerator</B></PRE><DL><DT><B>Direct Known Subclasses:</B> <DD><A HREF="../../../com/rapidminer/generator/BinaryNumericalGenerator.html" title="class in com.rapidminer.generator">BinaryNumericalGenerator</A>, <A HREF="../../../com/rapidminer/generator/ConstantGenerator.html" title="class in com.rapidminer.generator">ConstantGenerator</A>, <A HREF="../../../com/rapidminer/generator/SingularNumericalGenerator.html" title="class in com.rapidminer.generator">SingularNumericalGenerator</A></DD></DL><HR><DL><DT><PRE>public abstract class <B>FeatureGenerator</B><DT>extends java.lang.Object</DL></PRE><P>Abstract superclass of all attribute generators. Implementing classes have to implement the <tt>generate(Example)</tt>, method and specify the input and output attributes by the appropriate methods so that the using algorithms can use them correctly.<P><P><DL><DT><B>Version:</B></DT> <DD>$Id: FeatureGenerator.java,v 2.30 2006/03/27 13:21:58 ingomierswa Exp $</DD><DT><B>Author:</B></DT> <DD>Simon Fischer, Ingo Mierswa</DD></DL><HR><P><!-- =========== FIELD SUMMARY =========== --><A NAME="field_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>Field Summary</B></FONT></TH></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../../com/rapidminer/example/Attribute.html" title="interface in com.rapidminer.example">Attribute</A>[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/generator/FeatureGenerator.html#resultAttributes">resultAttributes</A></B></CODE><BR> The attributes of the function(s) calculated by this FeatureGenerator.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/generator/FeatureGenerator.html#SELECTION_MODE_ALL">SELECTION_MODE_ALL</A></B></CODE><BR> Indicates a non-restrictive generator selection mode.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static int</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/generator/FeatureGenerator.html#SELECTION_MODE_RESTRICTIVE">SELECTION_MODE_RESTRICTIVE</A></B></CODE><BR> Indicates a restrictive generator selection mode.</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="../../../com/rapidminer/generator/FeatureGenerator.html#FeatureGenerator()">FeatureGenerator</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> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/generator/FeatureGenerator.html#argumentsSet()">argumentsSet</A></B>()</CODE><BR> returns <tt>true</tt>, if the arguments have already been set, and <tt>false</tt> otherwise.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/generator/FeatureGenerator.html#checkCompatibility(com.rapidminer.example.Attribute, com.rapidminer.example.Attribute, int, java.lang.String[])">checkCompatibility</A></B>(<A HREF="../../../com/rapidminer/example/Attribute.html" title="interface in com.rapidminer.example">Attribute</A> attribute, <A HREF="../../../com/rapidminer/example/Attribute.html" title="interface in com.rapidminer.example">Attribute</A> compatible, int maxDepth, java.lang.String[] functions)</CODE><BR> </TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static <A HREF="../../../com/rapidminer/generator/FeatureGenerator.html" title="class in com.rapidminer.generator">FeatureGenerator</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/generator/FeatureGenerator.html#createGeneratorForFunction(java.lang.String)">createGeneratorForFunction</A></B>(java.lang.String functionName)</CODE><BR> Creates a new FeatureGenerator for a given function name.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> boolean</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/generator/FeatureGenerator.html#equals(java.lang.Object)">equals</A></B>(java.lang.Object o)</CODE><BR> A FeatureGenerator equals another FeatureGenerator if its class is equal and its arguments are equal and its function names are equal.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract void</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/generator/FeatureGenerator.html#generate(com.rapidminer.example.table.DataRow)">generate</A></B>(<A HREF="../../../com/rapidminer/example/table/DataRow.html" title="class in com.rapidminer.example.table">DataRow</A> data)</CODE><BR> Generates the new attribute values for the example e and returns the new attribute values as doubles.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>static java.util.List<<A HREF="../../../com/rapidminer/example/Attribute.html" title="interface in com.rapidminer.example">Attribute</A>></CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/generator/FeatureGenerator.html#generateAll(com.rapidminer.example.table.ExampleTable, java.util.Collection)">generateAll</A></B>(<A HREF="../../../com/rapidminer/example/table/ExampleTable.html" title="interface in com.rapidminer.example.table">ExampleTable</A> exampleTable, java.util.Collection<<A HREF="../../../com/rapidminer/generator/FeatureGenerator.html" title="class in com.rapidminer.generator">FeatureGenerator</A>> generatorList)</CODE><BR> Generates all new attributes and updates the ExampleTable.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE> <A HREF="../../../com/rapidminer/example/Attribute.html" title="interface in com.rapidminer.example">Attribute</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/generator/FeatureGenerator.html#getArgument(int)">getArgument</A></B>(int i)</CODE><BR> Returns the i-th selected argument (the true index as used in the example set's example table).</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>protected <A HREF="../../../com/rapidminer/example/table/ExampleTable.html" title="interface in com.rapidminer.example.table">ExampleTable</A></CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/generator/FeatureGenerator.html#getExampleTable()">getExampleTable</A></B>()</CODE><BR> Gets the example table the examples are from.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract java.lang.String</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/generator/FeatureGenerator.html#getFunction()">getFunction</A></B>()</CODE><BR> Sets the function name.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract <A HREF="../../../com/rapidminer/example/Attribute.html" title="interface in com.rapidminer.example">Attribute</A>[]</CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/generator/FeatureGenerator.html#getInputAttributes()">getInputAttributes</A></B>()</CODE><BR> Returns an array of Attributes where the length is the arity of the generator, <tt>[i]</tt> is the attribute type of the i-th argument.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1"><CODE>abstract java.util.List<<A HREF="../../../com/rapidminer/example/Attribute.html" title="interface in com.rapidminer.example">Attribute</A>[]></CODE></FONT></TD><TD><CODE><B><A HREF="../../../com/rapidminer/generator/FeatureGenerator.html#getInputCandidates(com.rapidminer.example.ExampleSet, int, java.lang.String[])">getInputCandidates</A></B>(<A HREF="../../../com/rapidminer/example/ExampleSet.html" title="interface in com.rapidminer.example">ExampleSet</A> exampleSet, int maxDepth, java.lang.String[] functions)</CODE><BR> Returns all compatible input attribute arrays for this generator from the given example set as list.</TD></TR><TR BGCOLOR="white" CLASS="TableRowColor"><TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">⌨️ 快捷键说明
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