ranker.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

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Specify the number of attributes to select from the ranked list.</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/attributeSelection/Ranker.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 given list of options.</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/attributeSelection/Ranker.html#setStartSet(java.lang.String)">setStartSet</A></B>(java.lang.String&nbsp;startSet)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets a starting set of attributes for the search.</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/attributeSelection/Ranker.html#setThreshold(double)">setThreshold</A></B>(double&nbsp;threshold)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Set the threshold by which the AttributeSelection module can discard
 attributes.</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/attributeSelection/Ranker.html#startSetTipText()">startSetTipText</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the tip text for this property</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/attributeSelection/Ranker.html#thresholdTipText()">thresholdTipText</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the tip text for this property</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/attributeSelection/Ranker.html#toString()">toString</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;returns a description of the search as a String</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_weka.attributeSelection.ASSearch"><!-- --></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.attributeSelection.<A HREF="../../weka/attributeSelection/ASSearch.html" title="class in weka.attributeSelection">ASSearch</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../weka/attributeSelection/ASSearch.html#forName(java.lang.String, java.lang.String[])">forName</A>, <A HREF="../../weka/attributeSelection/ASSearch.html#makeCopies(weka.attributeSelection.ASSearch, int)">makeCopies</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, wait, wait, wait</CODE></TD>
</TR>
</TABLE>
&nbsp;
<P>

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

<A NAME="constructor_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>Constructor Detail</B></FONT></TH>
</TR>
</TABLE>

<A NAME="Ranker()"><!-- --></A><H3>
Ranker</H3>
<PRE>
public <B>Ranker</B>()</PRE>
<DL>
<DD>Constructor
<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>
</TR>
</TABLE>

<A NAME="globalInfo()"><!-- --></A><H3>
globalInfo</H3>
<PRE>
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="numToSelectTipText()"><!-- --></A><H3>
numToSelectTipText</H3>
<PRE>
public java.lang.String <B>numToSelectTipText</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="setNumToSelect(int)"><!-- --></A><H3>
setNumToSelect</H3>
<PRE>
public void <B>setNumToSelect</B>(int&nbsp;n)</PRE>
<DL>
<DD>Specify the number of attributes to select from the ranked list. -1
 indicates that all attributes are to be retained.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html#setNumToSelect(int)">setNumToSelect</A></CODE> in interface <CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html" title="interface in weka.attributeSelection">RankedOutputSearch</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>n</CODE> - the number of attributes to retain</DL>
</DD>
</DL>
<HR>

<A NAME="getNumToSelect()"><!-- --></A><H3>
getNumToSelect</H3>
<PRE>
public int <B>getNumToSelect</B>()</PRE>
<DL>
<DD>Gets the number of attributes to be retained.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html#getNumToSelect()">getNumToSelect</A></CODE> in interface <CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html" title="interface in weka.attributeSelection">RankedOutputSearch</A></CODE></DL>
</DD>
<DD><DL>

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

<A NAME="getCalculatedNumToSelect()"><!-- --></A><H3>
getCalculatedNumToSelect</H3>
<PRE>
public int <B>getCalculatedNumToSelect</B>()</PRE>
<DL>
<DD>Gets the calculated number to select. This might be computed
 from a threshold, or if < 0 is set as the number to select then
 it is set to the number of attributes in the (transformed) data.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html#getCalculatedNumToSelect()">getCalculatedNumToSelect</A></CODE> in interface <CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html" title="interface in weka.attributeSelection">RankedOutputSearch</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the calculated number of attributes to select</DL>
</DD>
</DL>
<HR>

<A NAME="thresholdTipText()"><!-- --></A><H3>
thresholdTipText</H3>
<PRE>
public java.lang.String <B>thresholdTipText</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="setThreshold(double)"><!-- --></A><H3>
setThreshold</H3>
<PRE>
public void <B>setThreshold</B>(double&nbsp;threshold)</PRE>
<DL>
<DD>Set the threshold by which the AttributeSelection module can discard
 attributes.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html#setThreshold(double)">setThreshold</A></CODE> in interface <CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html" title="interface in weka.attributeSelection">RankedOutputSearch</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>threshold</CODE> - the threshold.</DL>
</DD>
</DL>
<HR>

<A NAME="getThreshold()"><!-- --></A><H3>
getThreshold</H3>
<PRE>
public double <B>getThreshold</B>()</PRE>
<DL>
<DD>Returns the threshold so that the AttributeSelection module can
 discard attributes from the ranking.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html#getThreshold()">getThreshold</A></CODE> in interface <CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html" title="interface in weka.attributeSelection">RankedOutputSearch</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a threshold by which to discard attributes</DL>
</DD>
</DL>
<HR>

<A NAME="generateRankingTipText()"><!-- --></A><H3>
generateRankingTipText</H3>
<PRE>
public java.lang.String <B>generateRankingTipText</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="setGenerateRanking(boolean)"><!-- --></A><H3>
setGenerateRanking</H3>
<PRE>
public void <B>setGenerateRanking</B>(boolean&nbsp;doRank)</PRE>
<DL>
<DD>This is a dummy set method---Ranker is ONLY capable of producing
 a ranked list of attributes for attribute evaluators.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html#setGenerateRanking(boolean)">setGenerateRanking</A></CODE> in interface <CODE><A HREF="../../weka/attributeSelection/RankedOutputSearch.html" title="interface in weka.attributeSelection">RankedOutputSearch</A></CODE></DL>