randomsearch.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 suitable for
 displaying in the explorer/experimenter gui</DL>
</DD>
</DL>
<HR>

<A NAME="getTechnicalInformation()"><!-- --></A><H3>
getTechnicalInformation</H3>
<PRE>
public <A HREF="../../weka/core/TechnicalInformation.html" title="class in weka.core">TechnicalInformation</A> <B>getTechnicalInformation</B>()</PRE>
<DL>
<DD>Returns an instance of a TechnicalInformation object, containing 
 detailed information about the technical background of this class,
 e.g., paper reference or book this class is based on.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../weka/core/TechnicalInformationHandler.html#getTechnicalInformation()">getTechnicalInformation</A></CODE> in interface <CODE><A HREF="../../weka/core/TechnicalInformationHandler.html" title="interface in weka.core">TechnicalInformationHandler</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the technical information about this class</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> -P &lt;start set&gt;
  Specify a starting set of attributes.
  Eg. 1,3,5-7.
  If a start point is supplied,
  random search evaluates the start
  point and then randomly looks for
  subsets that are as good as or better
  than the start point with the same
  or lower cardinality.</pre>
 
 <pre> -F &lt;percent&gt; 
  Percent of search space to consider.
  (default = 25%).</pre>
 
 <pre> -V
  Output subsets as the search progresses.
  (default = false).</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 RandomSearch.
<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="startSetTipText()"><!-- --></A><H3>
startSetTipText</H3>
<PRE>
public java.lang.String <B>startSetTipText</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="setStartSet(java.lang.String)"><!-- --></A><H3>
setStartSet</H3>
<PRE>
public void <B>setStartSet</B>(java.lang.String&nbsp;startSet)
                 throws java.lang.Exception</PRE>
<DL>
<DD>Sets a starting set of attributes for the search. It is the
 search method's responsibility to report this start set (if any)
 in its toString() method.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../weka/attributeSelection/StartSetHandler.html#setStartSet(java.lang.String)">setStartSet</A></CODE> in interface <CODE><A HREF="../../weka/attributeSelection/StartSetHandler.html" title="interface in weka.attributeSelection">StartSetHandler</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>startSet</CODE> - a string containing a list of attributes (and or ranges),
 eg. 1,2,6,10-15. "" indicates no start point.
 If a start point is supplied, random search evaluates the
 start point and then looks for subsets that are as good as or better 
 than the start point with the same or lower cardinality.
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if start set can't be set.</DL>
</DD>
</DL>
<HR>

<A NAME="getStartSet()"><!-- --></A><H3>
getStartSet</H3>
<PRE>
public java.lang.String <B>getStartSet</B>()</PRE>
<DL>
<DD>Returns a list of attributes (and or attribute ranges) as a String
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../weka/attributeSelection/StartSetHandler.html#getStartSet()">getStartSet</A></CODE> in interface <CODE><A HREF="../../weka/attributeSelection/StartSetHandler.html" title="interface in weka.attributeSelection">StartSetHandler</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a list of attributes (and or attribute ranges)</DL>
</DD>
</DL>
<HR>

<A NAME="verboseTipText()"><!-- --></A><H3>
verboseTipText</H3>
<PRE>
public java.lang.String <B>verboseTipText</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="setVerbose(boolean)"><!-- --></A><H3>
setVerbose</H3>
<PRE>
public void <B>setVerbose</B>(boolean&nbsp;v)</PRE>
<DL>
<DD>set whether or not to output new best subsets as the search proceeds
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>v</CODE> - true if output is to be verbose</DL>
</DD>
</DL>
<HR>

<A NAME="getVerbose()"><!-- --></A><H3>
getVerbose</H3>
<PRE>
public boolean <B>getVerbose</B>()</PRE>
<DL>
<DD>get whether or not output is verbose
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true if output is set to verbose</DL>
</DD>
</DL>
<HR>

<A NAME="searchPercentTipText()"><!-- --></A><H3>
searchPercentTipText</H3>
<PRE>
public java.lang.String <B>searchPercentTipText</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="setSearchPercent(double)"><!-- --></A><H3>
setSearchPercent</H3>
<PRE>
public void <B>setSearchPercent</B>(double&nbsp;p)</PRE>
<DL>
<DD>set the percentage of the search space to consider
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>p</CODE> - percent of the search space ( 0 < p <= 100)</DL>
</DD>
</DL>
<HR>

<A NAME="getSearchPercent()"><!-- --></A><H3>
getSearchPercent</H3>
<PRE>
public double <B>getSearchPercent</B>()</PRE>
<DL>
<DD>get the percentage of the search space to consider
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the percent of the search space explored</DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD>prints a description of the search
<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 as a string</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>Searches the attribute subset space randomly.
<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 attribute 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>
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