principalcomponents.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

          Sets whether the data should be transformed back to the original
 space</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/PrincipalComponents.html#setVarianceCovered(double)">setVarianceCovered</A></B>(double&nbsp;vc)</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Sets the amount of variance to account for when retaining
 principal components</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/PrincipalComponents.html#toString()">toString</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns a description of this attribute transformer</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/PrincipalComponents.html#transformBackToOriginalTipText()">transformBackToOriginalTipText</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;<A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../weka/attributeSelection/PrincipalComponents.html#transformedData()">transformedData</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Gets the transformed training data.</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>&nbsp;<A HREF="../../weka/core/Instances.html" title="class in weka.core">Instances</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../weka/attributeSelection/PrincipalComponents.html#transformedHeader()">transformedHeader</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns just the header for the transformed data (ie.</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/PrincipalComponents.html#varianceCoveredTipText()">varianceCoveredTipText</A></B>()</CODE>

<BR>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Returns the tip text for this property</TD>
</TR>
</TABLE>
&nbsp;<A NAME="methods_inherited_from_class_weka.attributeSelection.ASEvaluation"><!-- --></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/ASEvaluation.html" title="class in weka.attributeSelection">ASEvaluation</A></B></TH>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD><CODE><A HREF="../../weka/attributeSelection/ASEvaluation.html#forName(java.lang.String, java.lang.String[])">forName</A>, <A HREF="../../weka/attributeSelection/ASEvaluation.html#makeCopies(weka.attributeSelection.ASEvaluation, int)">makeCopies</A>, <A HREF="../../weka/attributeSelection/ASEvaluation.html#postProcess(int[])">postProcess</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="PrincipalComponents()"><!-- --></A><H3>
PrincipalComponents</H3>
<PRE>
public <B>PrincipalComponents</B>()</PRE>
<DL>
</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 attribute transformer
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a description of the evaluator 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>
<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> -D
  Don't normalize input data.</pre>
 
 <pre> -R
  Retain enough PC attributes to account 
  for this proportion of variance in the original data. (default = 0.95)</pre>
 
 <pre> -O
  Transform through the PC space and 
  back to the original space.</pre>
 
 <pre> -A
  Maximum number of attributes to include in 
 transformed attribute names. (-1 = include all)</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="normalizeTipText()"><!-- --></A><H3>
normalizeTipText</H3>
<PRE>
public java.lang.String <B>normalizeTipText</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="setNormalize(boolean)"><!-- --></A><H3>
setNormalize</H3>
<PRE>
public void <B>setNormalize</B>(boolean&nbsp;n)</PRE>
<DL>
<DD>Set whether input data will be normalized.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>n</CODE> - true if input data is to be normalized</DL>
</DD>
</DL>
<HR>

<A NAME="getNormalize()"><!-- --></A><H3>
getNormalize</H3>
<PRE>
public boolean <B>getNormalize</B>()</PRE>
<DL>
<DD>Gets whether or not input data is to be normalized
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true if input data is to be normalized</DL>
</DD>
</DL>
<HR>

<A NAME="varianceCoveredTipText()"><!-- --></A><H3>
varianceCoveredTipText</H3>
<PRE>
public java.lang.String <B>varianceCoveredTipText</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="setVarianceCovered(double)"><!-- --></A><H3>
setVarianceCovered</H3>
<PRE>
public void <B>setVarianceCovered</B>(double&nbsp;vc)</PRE>
<DL>
<DD>Sets the amount of variance to account for when retaining
 principal components
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>vc</CODE> - the proportion of total variance to account for</DL>
</DD>
</DL>
<HR>

<A NAME="getVarianceCovered()"><!-- --></A><H3>
getVarianceCovered</H3>
<PRE>
public double <B>getVarianceCovered</B>()</PRE>
<DL>
<DD>Gets the proportion of total variance to account for when
 retaining principal components
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the proportion of variance to account for</DL>
</DD>
</DL>
<HR>

<A NAME="maximumAttributeNamesTipText()"><!-- --></A><H3>
maximumAttributeNamesTipText</H3>
<PRE>
public java.lang.String <B>maximumAttributeNamesTipText</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="setMaximumAttributeNames(int)"><!-- --></A><H3>
setMaximumAttributeNames</H3>
<PRE>
public void <B>setMaximumAttributeNames</B>(int&nbsp;m)</PRE>
<DL>
<DD>Sets maximum number of attributes to include in
 transformed attribute names.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>m</CODE> - the maximum number of attributes</DL>
</DD>
</DL>