c45loader.html

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<B>Constructor Detail</B></FONT></TD>
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<A NAME="C45Loader()"><!-- --></A><H3>
C45Loader</H3>
<PRE>
public <B>C45Loader</B>()</PRE>
<DL>
</DL>

<!-- ============ METHOD DETAIL ========== -->

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<B>Method Detail</B></FONT></TD>
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<A NAME="globalInfo()"><!-- --></A><H3>
globalInfo</H3>
<PRE>
public java.lang.String <B>globalInfo</B>()</PRE>
<DL>
<DD>Returns a string describing this attribute evaluator
<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="reset()"><!-- --></A><H3>
reset</H3>
<PRE>
public void <B>reset</B>()</PRE>
<DL>
<DD>Resets the Loader ready to read a new data set
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getFileExtension()"><!-- --></A><H3>
getFileExtension</H3>
<PRE>
public java.lang.String <B>getFileExtension</B>()</PRE>
<DL>
<DD>Get the file extension used for arff files
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/converters/FileSourcedConverter.html#getFileExtension()">getFileExtension</A></CODE> in interface <CODE><A HREF="../../../weka/core/converters/FileSourcedConverter.html" title="interface in weka.core.converters">FileSourcedConverter</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the file extension</DL>
</DD>
</DL>
<HR>

<A NAME="getFileDescription()"><!-- --></A><H3>
getFileDescription</H3>
<PRE>
public java.lang.String <B>getFileDescription</B>()</PRE>
<DL>
<DD>Returns a description of the file type.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/converters/FileSourcedConverter.html#getFileDescription()">getFileDescription</A></CODE> in interface <CODE><A HREF="../../../weka/core/converters/FileSourcedConverter.html" title="interface in weka.core.converters">FileSourcedConverter</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>a short file description</DL>
</DD>
</DL>
<HR>

<A NAME="retrieveFile()"><!-- --></A><H3>
retrieveFile</H3>
<PRE>
public java.io.File <B>retrieveFile</B>()</PRE>
<DL>
<DD>get the File specified as the source
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/converters/FileSourcedConverter.html#retrieveFile()">retrieveFile</A></CODE> in interface <CODE><A HREF="../../../weka/core/converters/FileSourcedConverter.html" title="interface in weka.core.converters">FileSourcedConverter</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the source file</DL>
</DD>
</DL>
<HR>

<A NAME="setFile(java.io.File)"><!-- --></A><H3>
setFile</H3>
<PRE>
public void <B>setFile</B>(java.io.File&nbsp;file)
             throws java.io.IOException</PRE>
<DL>
<DD>sets the source File
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/converters/FileSourcedConverter.html#setFile(java.io.File)">setFile</A></CODE> in interface <CODE><A HREF="../../../weka/core/converters/FileSourcedConverter.html" title="interface in weka.core.converters">FileSourcedConverter</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>file</CODE> - the source file
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if an error occurs</DL>
</DD>
</DL>
<HR>

<A NAME="setSource(java.io.File)"><!-- --></A><H3>
setSource</H3>
<PRE>
public void <B>setSource</B>(java.io.File&nbsp;file)
               throws java.io.IOException</PRE>
<DL>
<DD>Resets the Loader object and sets the source of the data set to be 
 the supplied File object.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/converters/Loader.html#setSource(java.io.File)">setSource</A></CODE> in interface <CODE><A HREF="../../../weka/core/converters/Loader.html" title="interface in weka.core.converters">Loader</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../weka/core/converters/AbstractLoader.html#setSource(java.io.File)">setSource</A></CODE> in class <CODE><A HREF="../../../weka/core/converters/AbstractLoader.html" title="class in weka.core.converters">AbstractLoader</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>file</CODE> - the source file.
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if an error occurs</DL>
</DD>
</DL>
<HR>

<A NAME="getStructure()"><!-- --></A><H3>
getStructure</H3>
<PRE>
public <A HREF="../../../weka/core/Instances.html" title="class in weka.core">Instances</A> <B>getStructure</B>()
                       throws java.io.IOException</PRE>
<DL>
<DD>Determines and returns (if possible) the structure (internally the 
 header) of the data set as an empty set of instances.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/converters/Loader.html#getStructure()">getStructure</A></CODE> in interface <CODE><A HREF="../../../weka/core/converters/Loader.html" title="interface in weka.core.converters">Loader</A></CODE><DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/converters/AbstractLoader.html#getStructure()">getStructure</A></CODE> in class <CODE><A HREF="../../../weka/core/converters/AbstractLoader.html" title="class in weka.core.converters">AbstractLoader</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the structure of the data set as an empty set of Instances
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if an error occurs</DL>
</DD>
</DL>
<HR>

<A NAME="getDataSet()"><!-- --></A><H3>
getDataSet</H3>
<PRE>
public <A HREF="../../../weka/core/Instances.html" title="class in weka.core">Instances</A> <B>getDataSet</B>()
                     throws java.io.IOException</PRE>
<DL>
<DD>Return the full data set. If the structure hasn't yet been determined
 by a call to getStructure then method should do so before processing
 the rest of the data set.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/converters/Loader.html#getDataSet()">getDataSet</A></CODE> in interface <CODE><A HREF="../../../weka/core/converters/Loader.html" title="interface in weka.core.converters">Loader</A></CODE><DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/converters/AbstractLoader.html#getDataSet()">getDataSet</A></CODE> in class <CODE><A HREF="../../../weka/core/converters/AbstractLoader.html" title="class in weka.core.converters">AbstractLoader</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the structure of the data set as an empty set of Instances
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there is no source or parsing fails</DL>
</DD>
</DL>
<HR>

<A NAME="getNextInstance()"><!-- --></A><H3>
getNextInstance</H3>
<PRE>
public <A HREF="../../../weka/core/Instance.html" title="class in weka.core">Instance</A> <B>getNextInstance</B>()
                         throws java.io.IOException</PRE>
<DL>
<DD>Read the data set incrementally---get the next instance in the data 
 set or returns null if there are no
 more instances to get. If the structure hasn't yet been 
 determined by a call to getStructure then method should do so before
 returning the next instance in the data set.

 If it is not possible to read the data set incrementally (ie. in cases
 where the data set structure cannot be fully established before all
 instances have been seen) then an exception should be thrown.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/converters/Loader.html#getNextInstance()">getNextInstance</A></CODE> in interface <CODE><A HREF="../../../weka/core/converters/Loader.html" title="interface in weka.core.converters">Loader</A></CODE><DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/converters/AbstractLoader.html#getNextInstance()">getNextInstance</A></CODE> in class <CODE><A HREF="../../../weka/core/converters/AbstractLoader.html" title="class in weka.core.converters">AbstractLoader</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the next instance in the data set as an Instance object or null
 if there are no more instances to be read
<DT><B>Throws:</B>
<DD><CODE>java.io.IOException</CODE> - if there is an error during parsing</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 testing this class.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>args</CODE> - should contain <filestem>[.names | data]</DL>
</DD>
</DL>
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