linearnnsearch.html

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<PRE>
public boolean <B>getSkipIdentical</B>()</PRE>
<DL>
<DD>Gets whether if identical instances are skipped from the neighbourhood.
<P>
<DD><DL>

<DT><B>Returns:</B><DD>true if identical instances are skipped</DL>
</DD>
</DL>
<HR>

<A NAME="nearestNeighbour(weka.core.Instance)"><!-- --></A><H3>
nearestNeighbour</H3>
<PRE>
public <A HREF="../../../weka/core/Instance.html" title="class in weka.core">Instance</A> <B>nearestNeighbour</B>(<A HREF="../../../weka/core/Instance.html" title="class in weka.core">Instance</A>&nbsp;target)
                          throws java.lang.Exception</PRE>
<DL>
<DD>Returns the nearest instance in the current neighbourhood to the supplied
 instance.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/neighboursearch/NearestNeighbourSearch.html#nearestNeighbour(weka.core.Instance)">nearestNeighbour</A></CODE> in class <CODE><A HREF="../../../weka/core/neighboursearch/NearestNeighbourSearch.html" title="class in weka.core.neighboursearch">NearestNeighbourSearch</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>target</CODE> - The instance to find the nearest neighbour for.
<DT><B>Returns:</B><DD>the nearest instance
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if the nearest neighbour could not be found.</DL>
</DD>
</DL>
<HR>

<A NAME="kNearestNeighbours(weka.core.Instance, int)"><!-- --></A><H3>
kNearestNeighbours</H3>
<PRE>
public <A HREF="../../../weka/core/Instances.html" title="class in weka.core">Instances</A> <B>kNearestNeighbours</B>(<A HREF="../../../weka/core/Instance.html" title="class in weka.core">Instance</A>&nbsp;target,
                                    int&nbsp;kNN)
                             throws java.lang.Exception</PRE>
<DL>
<DD>Returns k nearest instances in the current neighbourhood to the supplied
 instance.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/neighboursearch/NearestNeighbourSearch.html#kNearestNeighbours(weka.core.Instance, int)">kNearestNeighbours</A></CODE> in class <CODE><A HREF="../../../weka/core/neighboursearch/NearestNeighbourSearch.html" title="class in weka.core.neighboursearch">NearestNeighbourSearch</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>target</CODE> - The instance to find the k nearest neighbours for.<DD><CODE>kNN</CODE> - The number of nearest neighbours to find.
<DT><B>Returns:</B><DD>the k nearest neighbors
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if the neighbours could not be found.</DL>
</DD>
</DL>
<HR>

<A NAME="getDistances()"><!-- --></A><H3>
getDistances</H3>
<PRE>
public double[] <B>getDistances</B>()
                      throws java.lang.Exception</PRE>
<DL>
<DD>Returns the distances of the k nearest neighbours. The kNearestNeighbours
 or nearestNeighbour must always be called before calling this function. If
 this function is called before calling either the kNearestNeighbours or 
 the nearestNeighbour, then it throws an exception. If, however, if either
 of the nearestNeighbour functions are called at any point in the 
 past then no exception is thrown and the distances of the training set from
 the last supplied target instance (to either one of the nearestNeighbour 
 functions) is/are returned.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/neighboursearch/NearestNeighbourSearch.html#getDistances()">getDistances</A></CODE> in class <CODE><A HREF="../../../weka/core/neighboursearch/NearestNeighbourSearch.html" title="class in weka.core.neighboursearch">NearestNeighbourSearch</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>array containing the distances of the 
                        nearestNeighbours. The length and ordering of the 
                        array is the same as that of the instances returned 
                        by nearestNeighbour functions.
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if called before calling kNearestNeighbours
                or nearestNeighbours.</DL>
</DD>
</DL>
<HR>

<A NAME="setInstances(weka.core.Instances)"><!-- --></A><H3>
setInstances</H3>
<PRE>
public void <B>setInstances</B>(<A HREF="../../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;insts)
                  throws java.lang.Exception</PRE>
<DL>
<DD>Sets the instances comprising the current neighbourhood.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../weka/core/neighboursearch/NearestNeighbourSearch.html#setInstances(weka.core.Instances)">setInstances</A></CODE> in class <CODE><A HREF="../../../weka/core/neighboursearch/NearestNeighbourSearch.html" title="class in weka.core.neighboursearch">NearestNeighbourSearch</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>insts</CODE> - The set of instances on which the nearest neighbour 
                        search is carried out. Usually this set is the 
                        training set.
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if setting of instances fails</DL>
</DD>
</DL>
<HR>

<A NAME="update(weka.core.Instance)"><!-- --></A><H3>
update</H3>
<PRE>
public void <B>update</B>(<A HREF="../../../weka/core/Instance.html" title="class in weka.core">Instance</A>&nbsp;ins)
            throws java.lang.Exception</PRE>
<DL>
<DD>Updates the LinearNNSearch to cater for the new added instance. This 
 implementation only updates the ranges of the DistanceFunction class, 
 since our set of instances is passed by reference and should already have 
 the newly added instance.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/neighboursearch/NearestNeighbourSearch.html#update(weka.core.Instance)">update</A></CODE> in class <CODE><A HREF="../../../weka/core/neighboursearch/NearestNeighbourSearch.html" title="class in weka.core.neighboursearch">NearestNeighbourSearch</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ins</CODE> - The instance to add. Usually this is the instance that 
                        is added to our neighbourhood i.e. the training 
                        instances.
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if the given instances are null</DL>
</DD>
</DL>
<HR>

<A NAME="addInstanceInfo(weka.core.Instance)"><!-- --></A><H3>
addInstanceInfo</H3>
<PRE>
public void <B>addInstanceInfo</B>(<A HREF="../../../weka/core/Instance.html" title="class in weka.core">Instance</A>&nbsp;ins)</PRE>
<DL>
<DD>Adds the given instance info. This implementation updates the range
 datastructures of the DistanceFunction class.
<P>
<DD><DL>
<DT><B>Overrides:</B><DD><CODE><A HREF="../../../weka/core/neighboursearch/NearestNeighbourSearch.html#addInstanceInfo(weka.core.Instance)">addInstanceInfo</A></CODE> in class <CODE><A HREF="../../../weka/core/neighboursearch/NearestNeighbourSearch.html" title="class in weka.core.neighboursearch">NearestNeighbourSearch</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>ins</CODE> - The instance to add the information of. Usually this is
                        the test instance supplied to update the range of 
                        attributes in the  distance function.</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>Returns:</B><DD>the revision</DL>
</DD>
</DL>
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