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CosineSimilarity (Java Machine Learning Library 0.0.11)
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net.sf.javaml.distance</FONT>
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Class CosineSimilarity</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><A HREF="../../../../net/sf/javaml/distance/AbstractSimilarity.html" title="class in net.sf.javaml.distance">net.sf.javaml.distance.AbstractSimilarity</A>
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>net.sf.javaml.distance.CosineSimilarity</B>
</PRE>
<DL>
<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../net/sf/javaml/distance/DistanceMeasure.html" title="interface in net.sf.javaml.distance">DistanceMeasure</A></DD>
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<DT><PRE>public class <B>CosineSimilarity</B><DT>extends <A HREF="../../../../net/sf/javaml/distance/AbstractSimilarity.html" title="class in net.sf.javaml.distance">AbstractSimilarity</A></DL>
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This similarity based distance measure actually measures the angle between two vectors. The value returned lies in the interval [0,1].
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<DT><B>Author:</B></DT>
<DD>Thomas Abeel</DD>
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<TD><CODE><B><A HREF="../../../../net/sf/javaml/distance/CosineSimilarity.html#CosineSimilarity()">CosineSimilarity</A></B>()</CODE>
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<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/javaml/distance/CosineSimilarity.html#calculateDistance(net.sf.javaml.core.Instance, net.sf.javaml.core.Instance)">calculateDistance</A></B>(<A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A> x,
<A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A> y)</CODE>
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XXX add doc</TD>
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<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/javaml/distance/CosineSimilarity.html#getMaximumDistance(net.sf.javaml.core.Dataset)">getMaximumDistance</A></B>(<A HREF="../../../../net/sf/javaml/core/Dataset.html" title="interface in net.sf.javaml.core">Dataset</A> data)</CODE>
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XXX add doc maximal distance, minimal similarity for distance measures this value should be high, for similarity measures this value should be low</TD>
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<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/javaml/distance/CosineSimilarity.html#getMinimumDistance(net.sf.javaml.core.Dataset)">getMinimumDistance</A></B>(<A HREF="../../../../net/sf/javaml/core/Dataset.html" title="interface in net.sf.javaml.core">Dataset</A> data)</CODE>
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XXX add doc minimal distance, maximal similarty for distance measures this value should be low, for similarity measures this value should be high</TD>
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<TH ALIGN="left"><B>Methods inherited from class net.sf.javaml.distance.<A HREF="../../../../net/sf/javaml/distance/AbstractSimilarity.html" title="class in net.sf.javaml.distance">AbstractSimilarity</A></B></TH>
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<TD><CODE><A HREF="../../../../net/sf/javaml/distance/AbstractSimilarity.html#compare(double, double)">compare</A></CODE></TD>
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<TH ALIGN="left"><B>Methods inherited from class java.lang.Object</B></TH>
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<TD><CODE>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</CODE></TD>
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<A NAME="CosineSimilarity()"><!-- --></A><H3>
CosineSimilarity</H3>
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public <B>CosineSimilarity</B>()</PRE>
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<A NAME="calculateDistance(net.sf.javaml.core.Instance, net.sf.javaml.core.Instance)"><!-- --></A><H3>
calculateDistance</H3>
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public double <B>calculateDistance</B>(<A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A> x,
<A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A> y)</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>Returns:</B><DD></DL>
</DD>
</DL>
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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> 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>Returns:</B><DD></DL>
</DD>
</DL>
<HR>
<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> 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
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<DT><B>Returns:</B><DD></DL>
</DD>
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