datasettools.html

Java方面的数值算法

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<A NAME="DatasetTools()"><!-- --></A><H3>
DatasetTools</H3>
<PRE>
public <B>DatasetTools</B>()</PRE>
<DL>
</DL>

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<A NAME="getClosest(net.sf.javaml.core.Dataset, net.sf.javaml.distance.DistanceMeasure, net.sf.javaml.core.Instance)"><!-- --></A><H3>
getClosest</H3>
<PRE>
public static <A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A> <B>getClosest</B>(<A HREF="../../../../net/sf/javaml/core/Dataset.html" title="interface in net.sf.javaml.core">Dataset</A>&nbsp;data,
                                  <A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html" title="interface in net.sf.javaml.distance">DistanceMeasure</A>&nbsp;dm,
                                  <A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A>&nbsp;inst)</PRE>
<DL>
<DD>Returns the instance of the given dataset that is closest to the instance
 that is given as a parameter.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - the dataset to search in<DD><CODE>inst</CODE> - the instance for which we need to find the closest
<DT><B>Returns:</B><DD></DL>
</DD>
</DL>
<HR>

<A NAME="getStandardDeviation(net.sf.javaml.core.Dataset)"><!-- --></A><H3>
getStandardDeviation</H3>
<PRE>
public static <A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A> <B>getStandardDeviation</B>(<A HREF="../../../../net/sf/javaml/core/Dataset.html" title="interface in net.sf.javaml.core">Dataset</A>&nbsp;data)</PRE>
<DL>
<DD>Return an instance with on each position the standard deviation for that
 attribute.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - 
<DT><B>Returns:</B><DD></DL>
</DD>
</DL>
<HR>

<A NAME="getCentroid(net.sf.javaml.core.Dataset, net.sf.javaml.distance.DistanceMeasure)"><!-- --></A><H3>
getCentroid</H3>
<PRE>
public static <A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A> <B>getCentroid</B>(<A HREF="../../../../net/sf/javaml/core/Dataset.html" title="interface in net.sf.javaml.core">Dataset</A>&nbsp;data,
                                   <A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html" title="interface in net.sf.javaml.distance">DistanceMeasure</A>&nbsp;dm)</PRE>
<DL>
<DD>Return the centroid of this cluster when using the given distance
 measure.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>dm</CODE> - the distance measure to use when calculating the centroid.
<DT><B>Returns:</B><DD>the centroid of this dataset</DL>
</DD>
</DL>
<HR>

<A NAME="epsilonRangeQuery(net.sf.javaml.core.Dataset, double, net.sf.javaml.core.Instance, net.sf.javaml.distance.DistanceMeasure)"><!-- --></A><H3>
epsilonRangeQuery</H3>
<PRE>
public static java.util.List&lt;<A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A>&gt; <B>epsilonRangeQuery</B>(<A HREF="../../../../net/sf/javaml/core/Dataset.html" title="interface in net.sf.javaml.core">Dataset</A>&nbsp;data,
                                                         double&nbsp;epsilon,
                                                         <A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A>&nbsp;instance,
                                                         <A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html" title="interface in net.sf.javaml.distance">DistanceMeasure</A>&nbsp;dm)</PRE>
<DL>
<DD>Performs an epsilon range query for this instance relative to the
 supplied dataset.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - the dataset on which to run the query.<DD><CODE>epsilon</CODE> - Specifies the range for the query<DD><CODE>instance</CODE> - The instance that is used as query-object for epsilon range
            query<DD><CODE>dm</CODE> - The distance measure used to calculated the distances.
<DT><B>Returns:</B><DD>List with all the Instances that are within the specified range</DL>
</DD>
</DL>
<HR>

<A NAME="removeInstance(net.sf.javaml.core.Dataset, int)"><!-- --></A><H3>
removeInstance</H3>
<PRE>
public static <A HREF="../../../../net/sf/javaml/core/Dataset.html" title="interface in net.sf.javaml.core">Dataset</A> <B>removeInstance</B>(<A HREF="../../../../net/sf/javaml/core/Dataset.html" title="interface in net.sf.javaml.core">Dataset</A>&nbsp;data,
                                     int&nbsp;index)</PRE>
<DL>
<DD>Removes an instance from a dataset and returns the resulting dataset.
 
 XXX DOC
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - <DD><CODE>index</CODE> - 
<DT><B>Returns:</B><DD></DL>
</DD>
</DL>
<HR>

<A NAME="merge(net.sf.javaml.core.Dataset, net.sf.javaml.core.Dataset)"><!-- --></A><H3>
merge</H3>
<PRE>
public static void <B>merge</B>(<A HREF="../../../../net/sf/javaml/core/Dataset.html" title="interface in net.sf.javaml.core">Dataset</A>&nbsp;data,
                         <A HREF="../../../../net/sf/javaml/core/Dataset.html" title="interface in net.sf.javaml.core">Dataset</A>&nbsp;added)</PRE>
<DL>
<DD>This method will merge all the data from the two datasets in to the first
 one.
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - <DD><CODE>added</CODE> - </DL>
</DD>
</DL>
<HR>

<A NAME="filterEmpty(net.sf.javaml.core.Dataset[])"><!-- --></A><H3>
filterEmpty</H3>
<PRE>
public static <A HREF="../../../../net/sf/javaml/core/Dataset.html" title="interface in net.sf.javaml.core">Dataset</A>[] <B>filterEmpty</B>(<A HREF="../../../../net/sf/javaml/core/Dataset.html" title="interface in net.sf.javaml.core">Dataset</A>[]&nbsp;input)</PRE>
<DL>
<DD>Filter out all the empty datasets in an array.
 
 XXX DOC
<P>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>input</CODE> - 
<DT><B>Returns:</B><DD></DL>
</DD>
</DL>
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