splitdatasetfilter.html

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<B>Method Detail</B></FONT></TD>
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<A NAME="listOptions()"><!-- --></A><H3>
listOptions</H3>
<PRE>
public java.util.Enumeration <B>listOptions</B>()</PRE>
<DL>
<DD>Gets an enumeration describing the available options.<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">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 the options for this object. Valid options are: <p>

 -R inst1,inst2-inst4,... <br>
 Specifies list of instances to select. First
 and last are valid indexes. (default fold-based splitting)<p>

 -V <br>
 Specifies if inverse of selection is to be output.<p>

 -N number of folds <br>
 Specifies number of folds dataset is split into (default 10). <p>

 -F fold <br>
 Specifies which fold is selected. (default 1)<p>

 -S seed <br>
 Specifies a random number seed for shuffling the dataset.
 (default 0, no randomizing)<p>

 -A <br>
 If set, data is not being stratified even if class index is set. <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">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 the filter.<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">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="getInstancesIndices()"><!-- --></A><H3>
getInstancesIndices</H3>
<PRE>
public java.lang.String <B>getInstancesIndices</B>()</PRE>
<DL>
<DD>Gets ranges of instances selected.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>a string containing a comma-separated list of ranges</DL>
</DD>
</DL>
<HR>

<A NAME="setInstancesIndices(java.lang.String)"><!-- --></A><H3>
setInstancesIndices</H3>
<PRE>
public void <B>setInstancesIndices</B>(java.lang.String&nbsp;rangeList)</PRE>
<DL>
<DD>Sets the ranges of instances to be selected. If provided string
 is null, ranges won't be used for selecting instances.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>rangeList</CODE> - a string representing the list of instances. 
 eg: first-3,5,6-last<DT><B>Throws:</B><DD><CODE>java.lang.IllegalArgumentException</CODE> - if an invalid range list is supplied</DL>
</DD>
</DL>
<HR>

<A NAME="getInvertSelection()"><!-- --></A><H3>
getInvertSelection</H3>
<PRE>
public boolean <B>getInvertSelection</B>()</PRE>
<DL>
<DD>Gets if selection is to be inverted.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>true if the selection is to be inverted</DL>
</DD>
</DL>
<HR>

<A NAME="setInvertSelection(boolean)"><!-- --></A><H3>
setInvertSelection</H3>
<PRE>
public void <B>setInvertSelection</B>(boolean&nbsp;inverse)</PRE>
<DL>
<DD>Sets if selection is to be inverted.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>inverse</CODE> - true if inversion is to be performed</DL>
</DD>
</DL>
<HR>

<A NAME="getNumFolds()"><!-- --></A><H3>
getNumFolds</H3>
<PRE>
public int <B>getNumFolds</B>()</PRE>
<DL>
<DD>Gets the number of folds in which dataset is to be split into.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the number of folds the dataset is to be split into.</DL>
</DD>
</DL>
<HR>

<A NAME="setNumFolds(int)"><!-- --></A><H3>
setNumFolds</H3>
<PRE>
public void <B>setNumFolds</B>(int&nbsp;numFolds)</PRE>
<DL>
<DD>Sets the number of folds the dataset is split into. If the number
 of folds is zero, it won't split it into folds.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>numFolds</CODE> - number of folds dataset is to be split into<DT><B>Throws:</B><DD><CODE>java.lang.IllegalArgumentException</CODE> - if number of folds is negative</DL>
</DD>
</DL>
<HR>

<A NAME="getFold()"><!-- --></A><H3>
getFold</H3>
<PRE>
public int <B>getFold</B>()</PRE>
<DL>
<DD>Gets the fold which is selected.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the fold which is selected</DL>
</DD>
</DL>
<HR>

<A NAME="setFold(int)"><!-- --></A><H3>
setFold</H3>
<PRE>
public void <B>setFold</B>(int&nbsp;fold)</PRE>
<DL>
<DD>Selects a fold.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>fold</CODE> - the fold to be selected.<DT><B>Throws:</B><DD><CODE>java.lang.IllegalArgumentException</CODE> - if fold's index is smaller than 1</DL>
</DD>
</DL>
<HR>

<A NAME="getSeed()"><!-- --></A><H3>
getSeed</H3>
<PRE>
public long <B>getSeed</B>()</PRE>
<DL>
<DD>Gets the random number seed used for shuffling the dataset.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the random number seed</DL>
</DD>
</DL>
<HR>

<A NAME="setSeed(long)"><!-- --></A><H3>
setSeed</H3>
<PRE>
public void <B>setSeed</B>(long&nbsp;seed)</PRE>
<DL>
<DD>Sets the random number seed for shuffling the dataset. If seed
 is negative, shuffling won't be performed.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>seed</CODE> - the random number seed</DL>
</DD>
</DL>
<HR>

<A NAME="setDontStratifyData(boolean)"><!-- --></A><H3>
setDontStratifyData</H3>
<PRE>
public void <B>setDontStratifyData</B>(boolean&nbsp;flag)</PRE>
<DL>
<DD>Sets whether stratification is not performed.<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="getDontStratifyData()"><!-- --></A><H3>
getDontStratifyData</H3>
<PRE>
public boolean <B>getDontStratifyData</B>()</PRE>
<DL>
<DD>Gets whether stratification is not performed.<DD><DL>
</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">Instances</A>&nbsp;instanceInfo)
                       throws java.lang.Exception</PRE>
<DL>
<DD>Sets the format of the input instances.<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">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 because outputFormat can 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="batchFinished()"><!-- --></A><H3>
batchFinished</H3>
<PRE>
public boolean <B>batchFinished</B>()</PRE>
<DL>
<DD>Signify that this batch of input to the filter is
 finished. Output() may now be called to retrieve the filtered
 instances.<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">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.IllegalStateException</CODE> - if no input structure has been defined</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;argv)</PRE>
<DL>
<DD>Main method for testing this class.<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>argv</CODE> - should contain arguments to the filter: use -h for help</DL>
</DD>
</DL>
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