pacematrix.html

数据挖掘的最常用工具。由于开源

<DD><DL>
<DT><B>Parameters:</B><DD><CODE>i</CODE> - the row number of the element<DD><CODE>j</CODE> - the column number of the element<DD><CODE>s</CODE> - the double value to be added with</DL>
</DD>
</DL>
<HR>

<A NAME="setTimes(int, int, double)"><!-- --></A><H3>
setTimes</H3>
<PRE>
public void <B>setTimes</B>(int&nbsp;i,
                     int&nbsp;j,
                     double&nbsp;s)</PRE>
<DL>
<DD>Multiply a value with an element and reset the element
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>i</CODE> - the row number of the element<DD><CODE>j</CODE> - the column number of the element<DD><CODE>s</CODE> - the double value to be multiplied with</DL>
</DD>
</DL>
<HR>

<A NAME="setMatrix(int, int, int, int, double)"><!-- --></A><H3>
setMatrix</H3>
<PRE>
public void <B>setMatrix</B>(int&nbsp;i0,
                      int&nbsp;i1,
                      int&nbsp;j0,
                      int&nbsp;j1,
                      double&nbsp;s)</PRE>
<DL>
<DD>Set the submatrix A[i0:i1][j0:j1] with a same value
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>i0</CODE> - the index of the first element of the column<DD><CODE>i1</CODE> - the index of the last element of the column<DD><CODE>j0</CODE> - the index of the first column<DD><CODE>j1</CODE> - the index of the last column<DD><CODE>s</CODE> - the value to be set to</DL>
</DD>
</DL>
<HR>

<A NAME="setMatrix(int, int, int, weka.core.matrix.DoubleVector)"><!-- --></A><H3>
setMatrix</H3>
<PRE>
public void <B>setMatrix</B>(int&nbsp;i0,
                      int&nbsp;i1,
                      int&nbsp;j,
                      <A HREF="../../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A>&nbsp;v)</PRE>
<DL>
<DD>Set the submatrix A[i0:i1][j] with the values stored in a
  DoubleVector
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>i0</CODE> - the index of the first element of the column<DD><CODE>i1</CODE> - the index of the last element of the column<DD><CODE>j</CODE> - the index of the column<DD><CODE>v</CODE> - the vector that stores the values</DL>
</DD>
</DL>
<HR>

<A NAME="setMatrix(double[], boolean)"><!-- --></A><H3>
setMatrix</H3>
<PRE>
public void <B>setMatrix</B>(double[]&nbsp;v,
                      boolean&nbsp;columnFirst)</PRE>
<DL>
<DD>Set the whole matrix from a 1-D array
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>v</CODE> - 1-D array of doubles<DD><CODE>columnFirst</CODE> - Whether to fill the column first or the row.
<DT><B>Throws:</B>
<DD><CODE>java.lang.ArrayIndexOutOfBoundsException</CODE> - Submatrix indices</DL>
</DD>
</DL>
<HR>

<A NAME="maxAbs()"><!-- --></A><H3>
maxAbs</H3>
<PRE>
public double <B>maxAbs</B>()</PRE>
<DL>
<DD>Returns the maximum absolute value of all elements
<P>
<DD><DL>

<DT><B>Returns:</B><DD>the maximum value</DL>
</DD>
</DL>
<HR>

<A NAME="maxAbs(int, int, int)"><!-- --></A><H3>
maxAbs</H3>
<PRE>
public double <B>maxAbs</B>(int&nbsp;i0,
                     int&nbsp;i1,
                     int&nbsp;j)</PRE>
<DL>
<DD>Returns the maximum absolute value of some elements of a column,
      that is, the elements of A[i0:i1][j].
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>i0</CODE> - the index of the first element of the column<DD><CODE>i1</CODE> - the index of the last element of the column<DD><CODE>j</CODE> - the index of the column
<DT><B>Returns:</B><DD>the maximum value</DL>
</DD>
</DL>
<HR>

<A NAME="minAbs(int, int, int)"><!-- --></A><H3>
minAbs</H3>
<PRE>
public double <B>minAbs</B>(int&nbsp;i0,
                     int&nbsp;i1,
                     int&nbsp;column)</PRE>
<DL>
<DD>Returns the minimum absolute value of some elements of a column,
      that is, the elements of A[i0:i1][j].
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>i0</CODE> - the index of the first element of the column<DD><CODE>i1</CODE> - the index of the last element of the column<DD><CODE>column</CODE> - the index of the column
<DT><B>Returns:</B><DD>the minimum value</DL>
</DD>
</DL>
<HR>

<A NAME="isEmpty()"><!-- --></A><H3>
isEmpty</H3>
<PRE>
public boolean <B>isEmpty</B>()</PRE>
<DL>
<DD>Check if the matrix is empty
<P>
<DD><DL>

<DT><B>Returns:</B><DD>true if the matrix is empty</DL>
</DD>
</DL>
<HR>

<A NAME="getColumn(int)"><!-- --></A><H3>
getColumn</H3>
<PRE>
public <A HREF="../../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> <B>getColumn</B>(int&nbsp;j)</PRE>
<DL>
<DD>Return a DoubleVector that stores a column of the matrix
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>j</CODE> - the index of the column
<DT><B>Returns:</B><DD>the column</DL>
</DD>
</DL>
<HR>

<A NAME="getColumn(int, int, int)"><!-- --></A><H3>
getColumn</H3>
<PRE>
public <A HREF="../../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> <B>getColumn</B>(int&nbsp;i0,
                              int&nbsp;i1,
                              int&nbsp;j)</PRE>
<DL>
<DD>Return a DoubleVector that stores some elements of a column of the
  matrix
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>i0</CODE> - the index of the first element of the column<DD><CODE>i1</CODE> - the index of the last element of the column<DD><CODE>j</CODE> - the index of the column
<DT><B>Returns:</B><DD>the DoubleVector</DL>
</DD>
</DL>
<HR>

<A NAME="times(int, int, int, weka.classifiers.functions.pace.PaceMatrix, int)"><!-- --></A><H3>
times</H3>
<PRE>
public double <B>times</B>(int&nbsp;i,
                    int&nbsp;j0,
                    int&nbsp;j1,
                    <A HREF="../../../../weka/classifiers/functions/pace/PaceMatrix.html" title="class in weka.classifiers.functions.pace">PaceMatrix</A>&nbsp;B,
                    int&nbsp;l)</PRE>
<DL>
<DD>Multiplication between a row (or part of a row) of the first matrix
  and a column (or part or a column) of the second matrix.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>i</CODE> - the index of the row in the first matrix<DD><CODE>j0</CODE> - the index of the first column in the first matrix<DD><CODE>j1</CODE> - the index of the last column in the first matrix<DD><CODE>B</CODE> - the second matrix<DD><CODE>l</CODE> - the index of the column in the second matrix
<DT><B>Returns:</B><DD>the result of the multiplication</DL>
</DD>
</DL>
<HR>

<A NAME="toString()"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>()</PRE>
<DL>
<DD>Converts matrix to string
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../../weka/core/matrix/Matrix.html#toString()">toString</A></CODE> in class <CODE><A HREF="../../../../weka/core/matrix/Matrix.html" title="class in weka.core.matrix">Matrix</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the matrix as string</DL>
</DD>
</DL>
<HR>

<A NAME="toString(int, boolean)"><!-- --></A><H3>
toString</H3>
<PRE>
public java.lang.String <B>toString</B>(int&nbsp;digits,
                                 boolean&nbsp;trailing)</PRE>
<DL>
<DD>Converts matrix to string
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>digits</CODE> - number of digits after decimal point<DD><CODE>trailing</CODE> - true if trailing zeros are padded
<DT><B>Returns:</B><DD>the matrix as string</DL>
</DD>
</DL>
<HR>

<A NAME="sum2(int, int, int, boolean)"><!-- --></A><H3>
sum2</H3>
<PRE>
public double <B>sum2</B>(int&nbsp;j,
                   int&nbsp;i0,
                   int&nbsp;i1,
                   boolean&nbsp;col)</PRE>
<DL>
<DD>Squared sum of a column or row in a matrix
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>j</CODE> - the index of the column or row<DD><CODE>i0</CODE> - the index of the first element<DD><CODE>i1</CODE> - the index of the last element<DD><CODE>col</CODE> - if true, sum over a column; otherwise, over a row
<DT><B>Returns:</B><DD>the squared sum</DL>
</DD>
</DL>
<HR>

<A NAME="sum2(boolean)"><!-- --></A><H3>
sum2</H3>
<PRE>
public double[] <B>sum2</B>(boolean&nbsp;col)</PRE>
<DL>
<DD>Squared sum of columns or rows of a matrix
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>col</CODE> - if true, sum over columns; otherwise, over rows
<DT><B>Returns:</B><DD>the squared sum</DL>
</DD>
</DL>
<HR>

<A NAME="h1(int, int)"><!-- --></A><H3>
h1</H3>
<PRE>
public double[] <B>h1</B>(int&nbsp;j,
                   int&nbsp;k)</PRE>
<DL>
<DD>Constructs single Householder transformation for a column
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>j</CODE> - the index of the column<DD><CODE>k</CODE> - the index of the row
<DT><B>Returns:</B><DD>d and q</DL>
</DD>
</DL>
<HR>

<A NAME="h2(int, int, double, weka.classifiers.functions.pace.PaceMatrix, int)"><!-- --></A><H3>
h2</H3>
<PRE>