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<A NAME="Function()"><!-- --></A><H3>
Function</H3>
<PRE>
public <B>Function</B>()</PRE>
<DL>
<DD>Constructs a function of constant value</DL>
<HR>

<A NAME="Function(weka.core.Instances)"><!-- --></A><H3>
Function</H3>
<PRE>
public <B>Function</B>(<A HREF="../../../weka/core/Instances.html">Instances</A>&nbsp;inst)</PRE>
<DL>
<DD>Constucts a function with all attributes except the class in the inst<DD><DL>
<DT><B>Parameters:</B><DD><CODE>inst</CODE> - instances</DL>
</DD>
</DL>
<HR>

<A NAME="Function(int)"><!-- --></A><H3>
Function</H3>
<PRE>
public <B>Function</B>(int&nbsp;attr)</PRE>
<DL>
<DD>Constructs a function with one attribute<DD><DL>
<DT><B>Parameters:</B><DD><CODE>attr</CODE> - an attribute</DL>
</DD>
</DL>

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<A NAME="copy()"><!-- --></A><H3>
copy</H3>
<PRE>
public final <A HREF="../../../weka/classifiers/m5/Function.html">Function</A> <B>copy</B>()</PRE>
<DL>
<DD>Makes a copy of a function<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Returns:</B><DD>the copy of the function</DL>
</DD>
</DL>
<HR>

<A NAME="toString(weka.core.Instances, int)"><!-- --></A><H3>
toString</H3>
<PRE>
public final java.lang.String <B>toString</B>(<A HREF="../../../weka/core/Instances.html">Instances</A>&nbsp;inst,
                                       int&nbsp;startPoint)
                                throws java.lang.Exception</PRE>
<DL>
<DD>Converts a function to a string<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>inst</CODE> - instances<DD><CODE>startPoint</CODE> - the starting point on the screen; used to feed line before reaching beyond 80 characters<DT><B>Returns:</B><DD>the converted string<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if something goes wrong</DL>
</DD>
</DL>
<HR>

<A NAME="combine(weka.classifiers.m5.Function, weka.classifiers.m5.Function)"><!-- --></A><H3>
combine</H3>
<PRE>
public static final <A HREF="../../../weka/classifiers/m5/Function.html">Function</A> <B>combine</B>(<A HREF="../../../weka/classifiers/m5/Function.html">Function</A>&nbsp;f1,
                                     <A HREF="../../../weka/classifiers/m5/Function.html">Function</A>&nbsp;f2)</PRE>
<DL>
<DD>Constructs a new function of which the variable list is a combination of those of two functions<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>f1</CODE> - function 1<DD><CODE>f2</CODE> - function 2<DT><B>Returns:</B><DD>the newly constructed function</DL>
</DD>
</DL>
<HR>

<A NAME="errors(weka.core.Instances)"><!-- --></A><H3>
errors</H3>
<PRE>
public final <A HREF="../../../weka/classifiers/m5/Errors.html">Errors</A> <B>errors</B>(<A HREF="../../../weka/core/Instances.html">Instances</A>&nbsp;inst)
                    throws java.lang.Exception</PRE>
<DL>
<DD>Evaluates a function<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>inst</CODE> - instances<DT><B>Returns:</B><DD>the evaluation results<DT><B>Throws:</B><DD><CODE>java.lang.Exception</CODE> - if something goes wrong</DL>
</DD>
</DL>
<HR>

<A NAME="predict(weka.core.Instance)"><!-- --></A><H3>
predict</H3>
<PRE>
public final double <B>predict</B>(<A HREF="../../../weka/core/Instance.html">Instance</A>&nbsp;instance)</PRE>
<DL>
<DD>Returns the predicted value of instance i by a function<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>i</CODE> - instance i<DD><CODE>inst</CODE> - instances<DT><B>Returns:</B><DD>the predicted value</DL>
</DD>
</DL>
<HR>

<A NAME="insignificant(double, weka.core.Instances)"><!-- --></A><H3>
insignificant</H3>
<PRE>
public final int <B>insignificant</B>(double&nbsp;sdy,
                               <A HREF="../../../weka/core/Instances.html">Instances</A>&nbsp;inst)</PRE>
<DL>
<DD>Detects the most insignificant variable in the funcion<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>sdy</CODE> - the standard deviation of the class variable<DD><CODE>inst</CODE> - instances<DT><B>Returns:</B><DD>the index of the most insignificant variable in the function</DL>
</DD>
</DL>
<HR>

<A NAME="remove(int)"><!-- --></A><H3>
remove</H3>
<PRE>
public final <A HREF="../../../weka/classifiers/m5/Function.html">Function</A> <B>remove</B>(int&nbsp;j)</PRE>
<DL>
<DD>Removes a term from the function<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>j</CODE> - the j-th index in the variable list in the function<DT><B>Returns:</B><DD>the new function with the term removed</DL>
</DD>
</DL>
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