costmatrix.html

来自「数据挖掘的最常用工具。由于开源」· HTML 代码 · 共 923 行 · 第 1/3 页

<DD>Gets the maximum cost for a particular class value.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>classVal</CODE> - the class value.
<DT><B>Returns:</B><DD>the maximum cost.
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if cost matrix contains non-fixed
 costs</DL>
</DD>
</DL>
<HR>

<A NAME="normalize()"><!-- --></A><H3>
normalize</H3>
<PRE>
public void <B>normalize</B>()</PRE>
<DL>
<DD>Normalizes the matrix so that the diagonal contains zeros.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="readOldFormat(java.io.Reader)"><!-- --></A><H3>
readOldFormat</H3>
<PRE>
public void <B>readOldFormat</B>(java.io.Reader&nbsp;reader)
                   throws java.lang.Exception</PRE>
<DL>
<DD>Loads a cost matrix in the old format from a reader. Adapted from code once sitting 
 in Instances.java
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>reader</CODE> - the reader to get the values from.
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if the matrix cannot be read correctly.</DL>
</DD>
</DL>
<HR>

<A NAME="write(java.io.Writer)"><!-- --></A><H3>
write</H3>
<PRE>
public void <B>write</B>(java.io.Writer&nbsp;w)
           throws java.lang.Exception</PRE>
<DL>
<DD>Writes out a matrix. The format can be read via the 
 CostMatrix(Reader) constructor.
 (FracPete: taken from old weka.core.Matrix class)
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>w</CODE> - the output Writer
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if an error occurs</DL>
</DD>
</DL>
<HR>

<A NAME="toMatlab()"><!-- --></A><H3>
toMatlab</H3>
<PRE>
public java.lang.String <B>toMatlab</B>()</PRE>
<DL>
<DD>converts the Matrix into a single line Matlab string: matrix is enclosed 
 by parentheses, rows are separated by semicolon and single cells by
 blanks, e.g., [1 2; 3 4].
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the matrix in Matlab single line format</DL>
</DD>
</DL>
<HR>

<A NAME="setCell(int, int, java.lang.Object)"><!-- --></A><H3>
setCell</H3>
<PRE>
public final void <B>setCell</B>(int&nbsp;rowIndex,
                          int&nbsp;columnIndex,
                          java.lang.Object&nbsp;value)</PRE>
<DL>
<DD>Set the value of a particular cell in the matrix
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>rowIndex</CODE> - the row<DD><CODE>columnIndex</CODE> - the column<DD><CODE>value</CODE> - the value to set</DL>
</DD>
</DL>
<HR>

<A NAME="getCell(int, int)"><!-- --></A><H3>
getCell</H3>
<PRE>
public final java.lang.Object <B>getCell</B>(int&nbsp;rowIndex,
                                      int&nbsp;columnIndex)</PRE>
<DL>
<DD>Return the contents of a particular cell. Note: this
 method returns the Object stored at a particular cell.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>rowIndex</CODE> - the row<DD><CODE>columnIndex</CODE> - the column
<DT><B>Returns:</B><DD>the value at the cell</DL>
</DD>
</DL>
<HR>

<A NAME="getElement(int, int)"><!-- --></A><H3>
getElement</H3>
<PRE>
public final double <B>getElement</B>(int&nbsp;rowIndex,
                               int&nbsp;columnIndex)
                        throws java.lang.Exception</PRE>
<DL>
<DD>Return the value of a cell as a double (for legacy code)
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>rowIndex</CODE> - the row<DD><CODE>columnIndex</CODE> - the column
<DT><B>Returns:</B><DD>the value at a particular cell as a double
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if the value is not a double</DL>
</DD>
</DL>
<HR>

<A NAME="getElement(int, int, weka.core.Instance)"><!-- --></A><H3>
getElement</H3>
<PRE>
public final double <B>getElement</B>(int&nbsp;rowIndex,
                               int&nbsp;columnIndex,
                               <A HREF="../../weka/core/Instance.html" title="class in weka.core">Instance</A>&nbsp;inst)
                        throws java.lang.Exception</PRE>
<DL>
<DD>Return the value of a cell as a double. Computes the
 value for non-fixed costs using the supplied Instance
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>rowIndex</CODE> - the row<DD><CODE>columnIndex</CODE> - the column
<DT><B>Returns:</B><DD>the value from a particular cell
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if something goes wrong</DL>
</DD>
</DL>
<HR>

<A NAME="setElement(int, int, double)"><!-- --></A><H3>
setElement</H3>
<PRE>
public final void <B>setElement</B>(int&nbsp;rowIndex,
                             int&nbsp;columnIndex,
                             double&nbsp;value)</PRE>
<DL>
<DD>Set the value of a cell as a double
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>rowIndex</CODE> - the row<DD><CODE>columnIndex</CODE> - the column<DD><CODE>value</CODE> - the value (double) to set</DL>
</DD>
</DL>
<HR>

<A NAME="parseMatlab(java.lang.String)"><!-- --></A><H3>
parseMatlab</H3>
<PRE>
public static <A HREF="../../weka/core/Matrix.html" title="class in weka.core">Matrix</A> <B>parseMatlab</B>(java.lang.String&nbsp;matlab)
                          throws java.lang.Exception</PRE>
<DL>
<DD>creates a matrix from the given Matlab string.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>matlab</CODE> - the matrix in matlab format
<DT><B>Returns:</B><DD>the matrix represented by the given string
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD>Converts a matrix to a string.
 (FracPete: taken from old weka.core.Matrix class)
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>toString</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the converted string</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>
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