polynomialkernel.html

Java方面的数值算法

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<A NAME="PolynomialKernel(double)"><!-- --></A><H3>
PolynomialKernel</H3>
<PRE>
public <B>PolynomialKernel</B>(double&nbsp;exponent)</PRE>
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<A NAME="calculateDistance(net.sf.javaml.core.Instance, net.sf.javaml.core.Instance)"><!-- --></A><H3>
calculateDistance</H3>
<PRE>
public double <B>calculateDistance</B>(<A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A>&nbsp;i,
                                <A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A>&nbsp;j)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html#calculateDistance(net.sf.javaml.core.Instance, net.sf.javaml.core.Instance)">DistanceMeasure</A></CODE></B></DD>
<DD>XXX add doc
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html#calculateDistance(net.sf.javaml.core.Instance, net.sf.javaml.core.Instance)">calculateDistance</A></CODE> in interface <CODE><A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html" title="interface in net.sf.javaml.distance">DistanceMeasure</A></CODE></DL>
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<DD><DL>

<DT><B>Returns:</B><DD></DL>
</DD>
</DL>
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<A NAME="dotProd(net.sf.javaml.core.Instance, net.sf.javaml.core.Instance)"><!-- --></A><H3>
dotProd</H3>
<PRE>
protected final double <B>dotProd</B>(<A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A>&nbsp;inst1,
                               <A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A>&nbsp;inst2)</PRE>
<DL>
<DD>Calculates a dot product between two instances
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<A NAME="compare(double, double)"><!-- --></A><H3>
compare</H3>
<PRE>
public boolean <B>compare</B>(double&nbsp;x,
                       double&nbsp;y)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html#compare(double, double)">DistanceMeasure</A></CODE></B></DD>
<DD>Returns whether the first distance/similarity is better than the second distance/similarity.
 
 For similarity measures the higher the similarity the better the measure,
 for distance measures it is the lower the better.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html#compare(double, double)">compare</A></CODE> in interface <CODE><A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html" title="interface in net.sf.javaml.distance">DistanceMeasure</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>x</CODE> - the first distance or similarity<DD><CODE>y</CODE> - the second distance or similarity
<DT><B>Returns:</B><DD>true if the first distance is better than the second, false in other cases.</DL>
</DD>
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<A NAME="getMaximumDistance(net.sf.javaml.core.Dataset)"><!-- --></A><H3>
getMaximumDistance</H3>
<PRE>
public double <B>getMaximumDistance</B>(<A HREF="../../../../net/sf/javaml/core/Dataset.html" title="interface in net.sf.javaml.core">Dataset</A>&nbsp;data)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html#getMaximumDistance(net.sf.javaml.core.Dataset)">DistanceMeasure</A></CODE></B></DD>
<DD>XXX add doc maximal distance, minimal similarity for distance measures
 this value should be high, for similarity measures this value should be
 low
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html#getMaximumDistance(net.sf.javaml.core.Dataset)">getMaximumDistance</A></CODE> in interface <CODE><A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html" title="interface in net.sf.javaml.distance">DistanceMeasure</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD></DL>
</DD>
</DL>
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<A NAME="getMinimumDistance(net.sf.javaml.core.Dataset)"><!-- --></A><H3>
getMinimumDistance</H3>
<PRE>
public double <B>getMinimumDistance</B>(<A HREF="../../../../net/sf/javaml/core/Dataset.html" title="interface in net.sf.javaml.core">Dataset</A>&nbsp;data)</PRE>
<DL>
<DD><B>Description copied from interface: <CODE><A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html#getMinimumDistance(net.sf.javaml.core.Dataset)">DistanceMeasure</A></CODE></B></DD>
<DD>XXX add doc minimal distance, maximal similarty for distance measures
 this value should be low, for similarity measures this value should be
 high
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html#getMinimumDistance(net.sf.javaml.core.Dataset)">getMinimumDistance</A></CODE> in interface <CODE><A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html" title="interface in net.sf.javaml.distance">DistanceMeasure</A></CODE></DL>
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<DD><DL>

<DT><B>Returns:</B><DD></DL>
</DD>
</DL>
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