ranksearch.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

public java.lang.String <B>globalInfo</B>()</PRE>
<DL>
<DD>Returns a string describing this search method
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

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

<A NAME="attributeEvaluatorTipText()"><!-- --></A><H3>
attributeEvaluatorTipText</H3>
<PRE>
public java.lang.String <B>attributeEvaluatorTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

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

<A NAME="setAttributeEvaluator(weka.attributeSelection.ASEvaluation)"><!-- --></A><H3>
setAttributeEvaluator</H3>
<PRE>
public void <B>setAttributeEvaluator</B>(<A HREF="../../weka/attributeSelection/ASEvaluation.html" title="class in weka.attributeSelection">ASEvaluation</A>&nbsp;newEvaluator)</PRE>
<DL>
<DD>Set the attribute evaluator to use for generating the ranking.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>newEvaluator</CODE> - the attribute evaluator to use.</DL>
</DD>
</DL>
<HR>

<A NAME="getAttributeEvaluator()"><!-- --></A><H3>
getAttributeEvaluator</H3>
<PRE>
public <A HREF="../../weka/attributeSelection/ASEvaluation.html" title="class in weka.attributeSelection">ASEvaluation</A> <B>getAttributeEvaluator</B>()</PRE>
<DL>
<DD>Get the attribute evaluator used to generate the ranking.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the evaluator used to generate the ranking.</DL>
</DD>
</DL>
<HR>

<A NAME="stepSizeTipText()"><!-- --></A><H3>
stepSizeTipText</H3>
<PRE>
public java.lang.String <B>stepSizeTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

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

<A NAME="setStepSize(int)"><!-- --></A><H3>
setStepSize</H3>
<PRE>
public void <B>setStepSize</B>(int&nbsp;ss)</PRE>
<DL>
<DD>Set the number of attributes to add from the rankining
 in each iteration
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ss</CODE> - the number of attribes to add.</DL>
</DD>
</DL>
<HR>

<A NAME="getStepSize()"><!-- --></A><H3>
getStepSize</H3>
<PRE>
public int <B>getStepSize</B>()</PRE>
<DL>
<DD>Get the number of attributes to add from the rankining
 in each iteration
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the number of attributes to add.</DL>
</DD>
</DL>
<HR>

<A NAME="startPointTipText()"><!-- --></A><H3>
startPointTipText</H3>
<PRE>
public java.lang.String <B>startPointTipText</B>()</PRE>
<DL>
<DD>Returns the tip text for this property
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

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

<A NAME="setStartPoint(int)"><!-- --></A><H3>
setStartPoint</H3>
<PRE>
public void <B>setStartPoint</B>(int&nbsp;sp)</PRE>
<DL>
<DD>Set the point at which to start evaluating the ranking
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>sp</CODE> - the position in the ranking to start at</DL>
</DD>
</DL>
<HR>

<A NAME="getStartPoint()"><!-- --></A><H3>
getStartPoint</H3>
<PRE>
public int <B>getStartPoint</B>()</PRE>
<DL>
<DD>Get the point at which to start evaluating the ranking
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the position in the ranking to start at</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></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 given list of options. <p/>

   <!-- options-start -->
 Valid options are: <p/>
 
 <pre> -A &lt;attribute evaluator&gt;
  class name of attribute evaluator to use for ranking. Place any
  evaluator options LAST on the command line following a "--".
  eg.:
   -A weka.attributeSelection.GainRatioAttributeEval ... -- -M
 (default: weka.attributeSelection.GainRatioAttributeEval)</pre>
 
 <pre> -S &lt;step size&gt;
  number of attributes to be added from the
  ranking in each iteration (default = 1).</pre>
 
 <pre> -R &lt;start point&gt;
  point in the ranking to start evaluating from. 
  (default = 0, ie. the head of the ranking).</pre>
 
 <pre> 
 Options specific to evaluator weka.attributeSelection.GainRatioAttributeEval:
 </pre>
 
 <pre> -M
  treat missing values as a seperate value.</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></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 WrapperSubsetEval.
<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></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>an array of strings suitable for passing to setOptions()</DL>
</DD>
</DL>
<HR>

<A NAME="search(weka.attributeSelection.ASEvaluation, weka.core.Instances)"><!-- --></A><H3>
search</H3>
<PRE>
public int[] <B>search</B>(<A HREF="../../weka/attributeSelection/ASEvaluation.html" title="class in weka.attributeSelection">ASEvaluation</A>&nbsp;ASEval,
                    <A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;data)
             throws java.lang.Exception</PRE>
<DL>
<DD>Ranks attributes using the specified attribute evaluator and then
 searches the ranking using the supplied subset evaluator.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../weka/attributeSelection/ASSearch.html#search(weka.attributeSelection.ASEvaluation, weka.core.Instances)">search</A></CODE> in class <CODE><A HREF="../../weka/attributeSelection/ASSearch.html" title="class in weka.attributeSelection">ASSearch</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ASEval</CODE> - the subset evaluator to guide the search<DD><CODE>data</CODE> - the training instances.
<DT><B>Returns:</B><DD>an array (not necessarily ordered) of selected attribute indexes
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if the search can't be completed</DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD>returns a description of the search as a String
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>toString</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a description of the search</DL>
</DD>
</DL>
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