doublevector.html

weka是机器学习和数据挖掘领域最有影响力的开源项目之一

</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="sortWithIndex(int, int, weka.core.matrix.IntVector)"><!-- --></A><H3>
sortWithIndex</H3>
<PRE>
public void <B>sortWithIndex</B>(int&nbsp;xi,
                          int&nbsp;xj,
                          <A HREF="../../../weka/core/matrix/IntVector.html" title="class in weka.core.matrix">IntVector</A>&nbsp;index)</PRE>
<DL>
<DD>Sorts the array in place with index changed
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>xi</CODE> - first index<DD><CODE>xj</CODE> - last index<DD><CODE>index</CODE> - array that stores all indices</DL>
</DD>
</DL>
<HR>

<A NAME="size()"><!-- --></A><H3>
size</H3>
<PRE>
public int <B>size</B>()</PRE>
<DL>
<DD>Gets the size of the vector.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the size</DL>
</DD>
</DL>
<HR>

<A NAME="setSize(int)"><!-- --></A><H3>
setSize</H3>
<PRE>
public void <B>setSize</B>(int&nbsp;m)</PRE>
<DL>
<DD>Sets the size of the vector
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>m</CODE> - the size</DL>
</DD>
</DL>
<HR>

<A NAME="capacity()"><!-- --></A><H3>
capacity</H3>
<PRE>
public int <B>capacity</B>()</PRE>
<DL>
<DD>Gets the capacity of the vector.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the capacity.</DL>
</DD>
</DL>
<HR>

<A NAME="setCapacity(int)"><!-- --></A><H3>
setCapacity</H3>
<PRE>
public void <B>setCapacity</B>(int&nbsp;n)</PRE>
<DL>
<DD>Sets the capacity of the vector
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>n</CODE> - the capacity.</DL>
</DD>
</DL>
<HR>

<A NAME="get(int)"><!-- --></A><H3>
get</H3>
<PRE>
public double <B>get</B>(int&nbsp;i)</PRE>
<DL>
<DD>Gets a single element.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>i</CODE> - Index.
<DT><B>Returns:</B><DD>the value of the i-th element</DL>
</DD>
</DL>
<HR>

<A NAME="setPlus(int, double)"><!-- --></A><H3>
setPlus</H3>
<PRE>
public void <B>setPlus</B>(int&nbsp;i,
                    double&nbsp;s)</PRE>
<DL>
<DD>Adds a value to an element
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>i</CODE> - the index of the element<DD><CODE>s</CODE> - the value</DL>
</DD>
</DL>
<HR>

<A NAME="setTimes(int, double)"><!-- --></A><H3>
setTimes</H3>
<PRE>
public void <B>setTimes</B>(int&nbsp;i,
                     double&nbsp;s)</PRE>
<DL>
<DD>Multiplies a value to an element
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>i</CODE> - the index of the element<DD><CODE>s</CODE> - the value</DL>
</DD>
</DL>
<HR>

<A NAME="addElement(double)"><!-- --></A><H3>
addElement</H3>
<PRE>
public void <B>addElement</B>(double&nbsp;x)</PRE>
<DL>
<DD>Adds an element into the vector
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>x</CODE> - the value of the new element</DL>
</DD>
</DL>
<HR>

<A NAME="square()"><!-- --></A><H3>
square</H3>
<PRE>
public <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> <B>square</B>()</PRE>
<DL>
<DD>Returns the squared vector
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="sqrt()"><!-- --></A><H3>
sqrt</H3>
<PRE>
public <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> <B>sqrt</B>()</PRE>
<DL>
<DD>Returns the square-root of all the elements in the vector
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="copy()"><!-- --></A><H3>
copy</H3>
<PRE>
public <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> <B>copy</B>()</PRE>
<DL>
<DD>Makes a deep copy of the vector
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="clone()"><!-- --></A><H3>
clone</H3>
<PRE>
public java.lang.Object <B>clone</B>()</PRE>
<DL>
<DD>Clones the DoubleVector object.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE>clone</CODE> in class <CODE>java.lang.Object</CODE></DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="innerProduct(weka.core.matrix.DoubleVector)"><!-- --></A><H3>
innerProduct</H3>
<PRE>
public double <B>innerProduct</B>(<A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A>&nbsp;v)</PRE>
<DL>
<DD>Returns the inner product of two DoubleVectors
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>v</CODE> - the second DoubleVector
<DT><B>Returns:</B><DD>the product</DL>
</DD>
</DL>
<HR>

<A NAME="sign()"><!-- --></A><H3>
sign</H3>
<PRE>
public <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> <B>sign</B>()</PRE>
<DL>
<DD>Returns the signs of all elements in terms of -1, 0 and +1.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="sum()"><!-- --></A><H3>
sum</H3>
<PRE>
public double <B>sum</B>()</PRE>
<DL>
<DD>Returns the sum of all elements in the vector.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="sum2()"><!-- --></A><H3>
sum2</H3>
<PRE>
public double <B>sum2</B>()</PRE>
<DL>
<DD>Returns the squared sum of all elements in the vector.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="norm1()"><!-- --></A><H3>
norm1</H3>
<PRE>
public double <B>norm1</B>()</PRE>
<DL>
<DD>Returns the L1-norm of the vector
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="norm2()"><!-- --></A><H3>
norm2</H3>
<PRE>
public double <B>norm2</B>()</PRE>
<DL>
<DD>Returns the L2-norm of the vector
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="sum2(weka.core.matrix.DoubleVector)"><!-- --></A><H3>
sum2</H3>
<PRE>
public double <B>sum2</B>(<A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A>&nbsp;v)</PRE>
<DL>
<DD>Returns ||u-v||^2
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>v</CODE> - the second vector</DL>
</DD>
</DL>
<HR>

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

<A NAME="subvector(weka.core.matrix.IntVector)"><!-- --></A><H3>
subvector</H3>
<PRE>
public <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> <B>subvector</B>(<A HREF="../../../weka/core/matrix/IntVector.html" title="class in weka.core.matrix">IntVector</A>&nbsp;index)</PRE>
<DL>
<DD>Returns a subvector.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - stores the indices of the needed elements
<DT><B>Returns:</B><DD>v[index]</DL>
</DD>
</DL>
<HR>

<A NAME="unpivoting(weka.core.matrix.IntVector, int)"><!-- --></A><H3>
unpivoting</H3>
<PRE>
public <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> <B>unpivoting</B>(<A HREF="../../../weka/core/matrix/IntVector.html" title="class in weka.core.matrix">IntVector</A>&nbsp;index,
                               int&nbsp;length)</PRE>
<DL>
<DD>Returns a vector from the pivoting indices. Elements not indexed are
  set to zero.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>index</CODE> - stores the pivoting indices<DD><CODE>length</CODE> - the total number of the potential elements
<DT><B>Returns:</B><DD>the subvector</DL>
</DD>
</DL>
<HR>

<A NAME="plus(double)"><!-- --></A><H3>
plus</H3>
<PRE>
public <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> <B>plus</B>(double&nbsp;x)</PRE>
<DL>
<DD>Adds a value to all the elements
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>x</CODE> - the value</DL>
</DD>
</DL>
<HR>

<A NAME="plusEquals(double)"><!-- --></A><H3>
plusEquals</H3>
<PRE>
public <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> <B>plusEquals</B>(double&nbsp;x)</PRE>
<DL>
<DD>Adds a value to all the elements in place
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>x</CODE> - the value</DL>
</DD>
</DL>
<HR>

<A NAME="plus(weka.core.matrix.DoubleVector)"><!-- --></A><H3>
plus</H3>
<PRE>
public <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> <B>plus</B>(<A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A>&nbsp;v)</PRE>
<DL>
<DD>Adds another vector element by element
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>v</CODE> - the second vector</DL>
</DD>
</DL>
<HR>

<A NAME="plusEquals(weka.core.matrix.DoubleVector)"><!-- --></A><H3>
plusEquals</H3>
<PRE>
public <A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A> <B>plusEquals</B>(<A HREF="../../../weka/core/matrix/DoubleVector.html" title="class in weka.core.matrix">DoubleVector</A>&nbsp;v)</PRE>
<DL>
<DD>Adds another vector in place element by element
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>v</CODE> - the second vector</DL>
</DD>
</DL>
<HR>