parser.html

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<A NAME="EOF_sym()"><!-- --></A><H3>
EOF_sym</H3>
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public int <B>EOF_sym</B>()</PRE>
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<DD><code>EOF</code> Symbol index.
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<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../weka/core/parser/java_cup/runtime/lr_parser.html#EOF_sym()">EOF_sym</A></CODE> in class <CODE><A HREF="../../../../../weka/core/parser/java_cup/runtime/lr_parser.html" title="class in weka.core.parser.java_cup.runtime">lr_parser</A></CODE></DL>
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<A NAME="error_sym()"><!-- --></A><H3>
error_sym</H3>
<PRE>
public int <B>error_sym</B>()</PRE>
<DL>
<DD><code>error</code> Symbol index.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../../weka/core/parser/java_cup/runtime/lr_parser.html#error_sym()">error_sym</A></CODE> in class <CODE><A HREF="../../../../../weka/core/parser/java_cup/runtime/lr_parser.html" title="class in weka.core.parser.java_cup.runtime">lr_parser</A></CODE></DL>
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<A NAME="setSymbols(java.util.HashMap)"><!-- --></A><H3>
setSymbols</H3>
<PRE>
public void <B>setSymbols</B>(java.util.HashMap&nbsp;value)</PRE>
<DL>
<DD>Sets the variable - value relation to use.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the variable-value relation</DL>
</DD>
</DL>
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<A NAME="getSymbols()"><!-- --></A><H3>
getSymbols</H3>
<PRE>
public java.util.HashMap <B>getSymbols</B>()</PRE>
<DL>
<DD>Returns the current variable - value relation in use.
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<DD><DL>

<DT><B>Returns:</B><DD>the variable-value relation</DL>
</DD>
</DL>
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<A NAME="setAttributeTypes(java.util.Hashtable)"><!-- --></A><H3>
setAttributeTypes</H3>
<PRE>
public void <B>setAttributeTypes</B>(java.util.Hashtable&nbsp;value)</PRE>
<DL>
<DD>Sets the attribute - attribute-type relation to use.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the att - att-type relation</DL>
</DD>
</DL>
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<A NAME="getAttributeTypes()"><!-- --></A><H3>
getAttributeTypes</H3>
<PRE>
public java.util.Hashtable <B>getAttributeTypes</B>()</PRE>
<DL>
<DD>Returns the current attribute - attribute-type relation in use.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the att - att-type relation</DL>
</DD>
</DL>
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<A NAME="setResult(java.lang.Boolean)"><!-- --></A><H3>
setResult</H3>
<PRE>
public void <B>setResult</B>(java.lang.Boolean&nbsp;value)</PRE>
<DL>
<DD>Sets the result of the evaluation.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - the result</DL>
</DD>
</DL>
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<A NAME="getResult()"><!-- --></A><H3>
getResult</H3>
<PRE>
public java.lang.Boolean <B>getResult</B>()</PRE>
<DL>
<DD>Returns the result of the evaluation.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the result</DL>
</DD>
</DL>
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<A NAME="getValue(weka.core.Instance, int)"><!-- --></A><H3>
getValue</H3>
<PRE>
public static java.lang.Object <B>getValue</B>(<A HREF="../../../../../weka/core/Instance.html" title="class in weka.core">Instance</A>&nbsp;instance,
                                        int&nbsp;index)</PRE>
<DL>
<DD>Returns either a String object for nominal attributes or a Double for numeric
 ones. For all other attribute types this method throws an Exception.
 It also returns a Double object in case of a missing value (for all
 attribute types!).
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>instance</CODE> - the instance to work on<DD><CODE>index</CODE> - the index of the attribute to return
<DT><B>Returns:</B><DD>the converted value</DL>
</DD>
</DL>
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<A NAME="filter(java.lang.String, weka.core.Instances)"><!-- --></A><H3>
filter</H3>
<PRE>
public static <A HREF="../../../../../weka/core/Instances.html" title="class in weka.core">Instances</A> <B>filter</B>(java.lang.String&nbsp;expression,
                               <A HREF="../../../../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;input)
                        throws java.lang.Exception</PRE>
<DL>
<DD>Filters the input dataset against the provided expression.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>expression</CODE> - the expression used for filtering<DD><CODE>input</CODE> - the input data
<DT><B>Returns:</B><DD>the filtered data
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if parsing fails</DL>
</DD>
</DL>
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<A NAME="main(java.lang.String[])"><!-- --></A><H3>
main</H3>
<PRE>
public static void <B>main</B>(java.lang.String[]&nbsp;args)
                 throws java.lang.Exception</PRE>
<DL>
<DD>Runs the parser from commandline. Takes the following arguments:
 <ol>
   <li>expression</li>
   <li>input file</li>
   <li>class index (first|last|num), use 0 to ignore</li>
   <li>output file</li>
 </ol>
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>args</CODE> - the commandline arguments
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if something goes wrong</DL>
</DD>
</DL>
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