principalcomponents.html

数据挖掘的最常用工具。由于开源

</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;value)</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>value</CODE> - the maximum number of attributes</DL>
</DD>
</DL>
<HR>

<A NAME="getMaximumAttributeNames()"><!-- --></A><H3>
getMaximumAttributeNames</H3>
<PRE>
public int <B>getMaximumAttributeNames</B>()</PRE>
<DL>
<DD>Gets maximum number of attributes to include in
 transformed attribute names.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

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

<A NAME="maximumAttributesTipText()"><!-- --></A><H3>
maximumAttributesTipText</H3>
<PRE>
public java.lang.String <B>maximumAttributesTipText</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="setMaximumAttributes(int)"><!-- --></A><H3>
setMaximumAttributes</H3>
<PRE>
public void <B>setMaximumAttributes</B>(int&nbsp;value)</PRE>
<DL>
<DD>Sets maximum number of PC attributes to retain.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the maximum number of attributes</DL>
</DD>
</DL>
<HR>

<A NAME="getMaximumAttributes()"><!-- --></A><H3>
getMaximumAttributes</H3>
<PRE>
public int <B>getMaximumAttributes</B>()</PRE>
<DL>
<DD>Gets maximum number of PC attributes to retain.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

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

<A NAME="getCapabilities()"><!-- --></A><H3>
getCapabilities</H3>
<PRE>
public <A HREF="../../../../weka/core/Capabilities.html" title="class in weka.core">Capabilities</A> <B>getCapabilities</B>()</PRE>
<DL>
<DD>Returns the capabilities of this evaluator.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../weka/core/CapabilitiesHandler.html#getCapabilities()">getCapabilities</A></CODE> in interface <CODE><A HREF="../../../../weka/core/CapabilitiesHandler.html" title="interface in weka.core">CapabilitiesHandler</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/filters/Filter.html#getCapabilities()">getCapabilities</A></CODE> in class <CODE><A HREF="../../../../weka/filters/Filter.html" title="class in weka.filters">Filter</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the capabilities of this evaluator<DT><B>See Also:</B><DD><A HREF="../../../../weka/core/Capabilities.html" title="class in weka.core"><CODE>Capabilities</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="setInputFormat(weka.core.Instances)"><!-- --></A><H3>
setInputFormat</H3>
<PRE>
public boolean <B>setInputFormat</B>(<A HREF="../../../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;instanceInfo)
                       throws java.lang.Exception</PRE>
<DL>
<DD>Sets the format of the input instances.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/filters/Filter.html#setInputFormat(weka.core.Instances)">setInputFormat</A></CODE> in class <CODE><A HREF="../../../../weka/filters/Filter.html" title="class in weka.filters">Filter</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>instanceInfo</CODE> - an Instances object containing the input 
                                instance structure (any instances contained 
                                in the object are ignored - only the structure 
                                is required).
<DT><B>Returns:</B><DD>true if the outputFormat may be collected 
                                immediately
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if the input format can't be set successfully</DL>
</DD>
</DL>
<HR>

<A NAME="input(weka.core.Instance)"><!-- --></A><H3>
input</H3>
<PRE>
public boolean <B>input</B>(<A HREF="../../../../weka/core/Instance.html" title="class in weka.core">Instance</A>&nbsp;instance)
              throws java.lang.Exception</PRE>
<DL>
<DD>Input an instance for filtering. Filter requires all
 training instances be read before producing output.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/filters/Filter.html#input(weka.core.Instance)">input</A></CODE> in class <CODE><A HREF="../../../../weka/filters/Filter.html" title="class in weka.filters">Filter</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>instance</CODE> - the input instance
<DT><B>Returns:</B><DD>true if the filtered instance may now be
                                        collected with output().
<DT><B>Throws:</B>
<DD><CODE>java.lang.IllegalStateException</CODE> - if no input format has been set
<DD><CODE>java.lang.Exception</CODE> - if conversion fails</DL>
</DD>
</DL>
<HR>

<A NAME="batchFinished()"><!-- --></A><H3>
batchFinished</H3>
<PRE>
public boolean <B>batchFinished</B>()
                      throws java.lang.Exception</PRE>
<DL>
<DD>Signify that this batch of input to the filter is finished.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/filters/Filter.html#batchFinished()">batchFinished</A></CODE> in class <CODE><A HREF="../../../../weka/filters/Filter.html" title="class in weka.filters">Filter</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>true                    if there are instances pending output
<DT><B>Throws:</B>
<DD><CODE>java.lang.NullPointerException</CODE> - if no input structure has been defined,
<DD><CODE>java.lang.Exception</CODE> - if there was a problem finishing the batch.</DL>
</DD>
</DL>
<HR>

<A NAME="getRevision()"><!-- --></A><H3>
getRevision</H3>
<PRE>
public java.lang.String <B>getRevision</B>()</PRE>
<DL>
<DD>Returns the revision string.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../weka/core/RevisionHandler.html#getRevision()">getRevision</A></CODE> in interface <CODE><A HREF="../../../../weka/core/RevisionHandler.html" title="interface in weka.core">RevisionHandler</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the revision</DL>
</DD>
</DL>
<HR>

<A NAME="main(java.lang.String[])"><!-- --></A><H3>
main</H3>
<PRE>
public static void <B>main</B>(java.lang.String[]&nbsp;args)</PRE>
<DL>
<DD>Main method for running this filter.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>args</CODE> - should contain arguments to the filter: use -h for help</DL>
</DD>
</DL>
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