expression.html

weka是机器学习和数据挖掘领域最有影响力的开源项目之一

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the mathematical expression for generating y out of x</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.lang.String[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../weka/datagenerators/classifiers/regression/Expression.html#getOptions()">getOptions</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the current settings of the datagenerator BIRCHCluster.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;boolean</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../weka/datagenerators/classifiers/regression/Expression.html#getSingleModeFlag()">getSingleModeFlag</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Return if single mode is set for the given data generator
 mode depends on option setting and or generator type.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../weka/datagenerators/classifiers/regression/Expression.html#globalInfo()">globalInfo</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a string describing this data generator.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;java.util.Enumeration</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../weka/datagenerators/classifiers/regression/Expression.html#listOptions()">listOptions</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;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&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../weka/datagenerators/classifiers/regression/Expression.html#main(java.lang.String[])">main</A></B>(java.lang.String[]&nbsp;args)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Main method for testing this class.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../weka/datagenerators/classifiers/regression/Expression.html#setExpression(java.lang.String)">setExpression</A></B>(java.lang.String&nbsp;value)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the mathematical expression to generate y out of x.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../weka/datagenerators/classifiers/regression/Expression.html#setOptions(java.lang.String[])">setOptions</A></B>(java.lang.String[]&nbsp;options)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Parses a list of options for this object.</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_weka.datagenerators.classifiers.regression.MexicanHat"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class weka.datagenerators.classifiers.regression.<A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html" title="class in weka.datagenerators.classifiers.regression">MexicanHat</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#getAmplitude()">getAmplitude</A>, <A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#getMaxRange()">getMaxRange</A>, <A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#getMinRange()">getMinRange</A>, <A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#getNoiseRate()">getNoiseRate</A>, <A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#getNoiseVariance()">getNoiseVariance</A>, <A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#maxRangeTipText()">maxRangeTipText</A>, <A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#minRangeTipText()">minRangeTipText</A>, <A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#noiseRateTipText()">noiseRateTipText</A>, <A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#noiseVarianceTipText()">noiseVarianceTipText</A>, <A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#setAmplitude(double)">setAmplitude</A>, <A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#setMaxRange(double)">setMaxRange</A>, <A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#setMinRange(double)">setMinRange</A>, <A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#setNoiseRate(double)">setNoiseRate</A>, <A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#setNoiseVariance(double)">setNoiseVariance</A></CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_weka.datagenerators.RegressionGenerator"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class weka.datagenerators.<A HREF="../../../../weka/datagenerators/RegressionGenerator.html" title="class in weka.datagenerators">RegressionGenerator</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../weka/datagenerators/RegressionGenerator.html#getNumExamples()">getNumExamples</A>, <A HREF="../../../../weka/datagenerators/RegressionGenerator.html#numExamplesTipText()">numExamplesTipText</A>, <A HREF="../../../../weka/datagenerators/RegressionGenerator.html#setNumExamples(int)">setNumExamples</A></CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_weka.datagenerators.DataGenerator"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class weka.datagenerators.<A HREF="../../../../weka/datagenerators/DataGenerator.html" title="class in weka.datagenerators">DataGenerator</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../../../weka/datagenerators/DataGenerator.html#debugTipText()">debugTipText</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#defaultOutput()">defaultOutput</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#formatTipText()">formatTipText</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#getDatasetFormat()">getDatasetFormat</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#getDebug()">getDebug</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#getOutput()">getOutput</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#getRandom()">getRandom</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#getRelationName()">getRelationName</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#getSeed()">getSeed</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#makeData(weka.datagenerators.DataGenerator, java.lang.String[])">makeData</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#outputTipText()">outputTipText</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#randomTipText()">randomTipText</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#relationNameTipText()">relationNameTipText</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#seedTipText()">seedTipText</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#setDatasetFormat(weka.core.Instances)">setDatasetFormat</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#setDebug(boolean)">setDebug</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#setOutput(java.io.PrintWriter)">setOutput</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#setRandom(java.util.Random)">setRandom</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#setRelationName(java.lang.String)">setRelationName</A>, <A HREF="../../../../weka/datagenerators/DataGenerator.html#setSeed(int)">setSeed</A></CODE></TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_java.lang.Object"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#EEEEFF" CLASS="TableSubHeadingColor">
<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE>equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

<A NAME="constructor_detail"><!-- --></A>
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<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TH>
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</TABLE>

<A NAME="Expression()"><!-- --></A><H3>
Expression</H3>
<PRE>
public <B>Expression</B>()</PRE>
<DL>
<DD>initializes the generator
<P>
</DL>

<!-- ============ METHOD DETAIL ========== -->

<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Method Detail</B></FONT></TH>
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<A NAME="globalInfo()"><!-- --></A><H3>
globalInfo</H3>
<PRE>
public java.lang.String <B>globalInfo</B>()</PRE>
<DL>
<DD>Returns a string describing this data generator.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#globalInfo()">globalInfo</A></CODE> in class <CODE><A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html" title="class in weka.datagenerators.classifiers.regression">MexicanHat</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a description of the data generator suitable for
 displaying in the explorer/experimenter gui</DL>
</DD>
</DL>
<HR>

<A NAME="listOptions()"><!-- --></A><H3>
listOptions</H3>
<PRE>
public java.util.Enumeration <B>listOptions</B>()</PRE>
<DL>
<DD>Returns an enumeration describing the available options.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../weka/core/OptionHandler.html#listOptions()">listOptions</A></CODE> in interface <CODE><A HREF="../../../../weka/core/OptionHandler.html" title="interface in weka.core">OptionHandler</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#listOptions()">listOptions</A></CODE> in class <CODE><A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html" title="class in weka.datagenerators.classifiers.regression">MexicanHat</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>an enumeration of all the available options</DL>
</DD>
</DL>
<HR>

<A NAME="setOptions(java.lang.String[])"><!-- --></A><H3>
setOptions</H3>
<PRE>
public void <B>setOptions</B>(java.lang.String[]&nbsp;options)
                throws java.lang.Exception</PRE>
<DL>
<DD>Parses a list of options for this object. <p/>

   <!-- options-start -->
 Valid options are: <p/>
 
 <pre> -h
  Prints this help.</pre>
 
 <pre> -o &lt;file&gt;
  The name of the output file, otherwise the generated data is
  printed to stdout.</pre>
 
 <pre> -r &lt;name&gt;
  The name of the relation.</pre>
 
 <pre> -d
  Whether to print debug informations.</pre>
 
 <pre> -S
  The seed for random function (default 1)</pre>
 
 <pre> -n &lt;num&gt;
  The number of examples to generate (default 100)</pre>
 
 <pre> -A &lt;num&gt;
  The amplitude multiplier (default 1.0).</pre>
 
 <pre> -R &lt;num&gt;..&lt;num&gt;
  The range x is randomly drawn from (default -10.0..10.0).</pre>
 
 <pre> -N &lt;num&gt;
  The noise rate (default 0.0).</pre>
 
 <pre> -V &lt;num&gt;
  The noise variance (default 1.0).</pre>
 
 <pre> -E &lt;expression&gt;
  The expression to use for generating y out of x 
  (default sin(abs(a1)) / abs(a1)).</pre>
 
   <!-- options-end -->
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../weka/core/OptionHandler.html#setOptions(java.lang.String[])">setOptions</A></CODE> in interface <CODE><A HREF="../../../../weka/core/OptionHandler.html" title="interface in weka.core">OptionHandler</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#setOptions(java.lang.String[])">setOptions</A></CODE> in class <CODE><A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html" title="class in weka.datagenerators.classifiers.regression">MexicanHat</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>options</CODE> - the list of options as an array of strings
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if an option is not supported</DL>
</DD>
</DL>
<HR>

<A NAME="getOptions()"><!-- --></A><H3>
getOptions</H3>
<PRE>
public java.lang.String[] <B>getOptions</B>()</PRE>
<DL>
<DD>Gets the current settings of the datagenerator BIRCHCluster.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../weka/core/OptionHandler.html#getOptions()">getOptions</A></CODE> in interface <CODE><A HREF="../../../../weka/core/OptionHandler.html" title="interface in weka.core">OptionHandler</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#getOptions()">getOptions</A></CODE> in class <CODE><A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html" title="class in weka.datagenerators.classifiers.regression">MexicanHat</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>an array of strings suitable for passing to setOptions<DT><B>See Also:</B><DD><A HREF="../../../../weka/datagenerators/DataGenerator.html#removeBlacklist(java.lang.String[])"><CODE>DataGenerator.removeBlacklist(String[])</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="amplitudeTipText()"><!-- --></A><H3>
amplitudeTipText</H3>
<PRE>
public java.lang.String <B>amplitudeTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html#amplitudeTipText()">amplitudeTipText</A></CODE> in class <CODE><A HREF="../../../../weka/datagenerators/classifiers/regression/MexicanHat.html" title="class in weka.datagenerators.classifiers.regression">MexicanHat</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>tip text for this property suitable for
         displaying in the explorer/experimenter gui</DL>