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FeatureVector (JNI_SVM-light-6.01 - A Java Native Interface (JNI) for SVM-light v6.01)
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jnisvmlight</FONT>
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Class FeatureVector</H2>
<PRE>
java.lang.Object
<IMG SRC="../resources/inherit.gif" ALT="extended by "><B>jnisvmlight.FeatureVector</B>
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<DL>
<DT><B>All Implemented Interfaces:</B> <DD>java.io.Serializable</DD>
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<DT><B>Direct Known Subclasses:</B> <DD><A HREF="../jnisvmlight/LabeledFeatureVector.html" title="class in jnisvmlight">LabeledFeatureVector</A></DD>
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<DT><PRE>public class <A HREF="../src-html/jnisvmlight/FeatureVector.html#line.33"><B>FeatureVector</B></A><DT>extends java.lang.Object<DT>implements java.io.Serializable</DL>
</PRE>
<P>
A feature vector. Features are dimension-value pairs. This class implements a simple dictionary data structure to map dimensions onto their values. Note that for convenience, features do not have be sorted according to their dimensions at this point. The SVMLightTrainer class has an option for sorting input vectors prior to training.
<P>
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<DT><B>See Also:</B><DD><A HREF="../serialized-form.html#jnisvmlight.FeatureVector">Serialized Form</A></DL>
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<CODE>protected int[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../jnisvmlight/FeatureVector.html#m_dims">m_dims</A></B></CODE>
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<CODE>protected double[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../jnisvmlight/FeatureVector.html#m_vals">m_vals</A></B></CODE>
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<TD><CODE><B><A HREF="../jnisvmlight/FeatureVector.html#FeatureVector(int)">FeatureVector</A></B>(int size)</CODE>
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<TD><CODE><B><A HREF="../jnisvmlight/FeatureVector.html#FeatureVector(int[], double[])">FeatureVector</A></B>(int[] dims,
double[] vals)</CODE>
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<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../jnisvmlight/FeatureVector.html#getCosine(jnisvmlight.FeatureVector)">getCosine</A></B>(<A HREF="../jnisvmlight/FeatureVector.html" title="class in jnisvmlight">FeatureVector</A> v)</CODE>
<BR>
Returns the cosine similarity between two feature vectors.</TD>
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<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../jnisvmlight/FeatureVector.html#getDimAt(int)">getDimAt</A></B>(int index)</CODE>
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<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../jnisvmlight/FeatureVector.html#getL1Norm()">getL1Norm</A></B>()</CODE>
<BR>
Returns the linear norm factor of this vector's values (i.e., the sum of it's values).</TD>
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<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../jnisvmlight/FeatureVector.html#getL2Norm()">getL2Norm</A></B>()</CODE>
<BR>
Returns the L2 norm factor of this vector's values.</TD>
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<CODE> double</CODE></FONT></TD>
<TD><CODE><B><A HREF="../jnisvmlight/FeatureVector.html#getValueAt(int)">getValueAt</A></B>(int index)</CODE>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../jnisvmlight/FeatureVector.html#normalizeL1()">normalizeL1</A></B>()</CODE>
<BR>
Performs a linear normalization to the value 1.</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../jnisvmlight/FeatureVector.html#normalizeL1(double)">normalizeL1</A></B>(double norm)</CODE>
<BR>
Performs a linear normalization to the given norm value.</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../jnisvmlight/FeatureVector.html#normalizeL2()">normalizeL2</A></B>()</CODE>
<BR>
Performs an L2 normalization to the value 1.</TD>
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<CODE> void</CODE></FONT></TD>
<TD><CODE><B><A HREF="../jnisvmlight/FeatureVector.html#setFeatures(int[], double[])">setFeatures</A></B>(int[] dims,
double[] vals)</CODE>
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<CODE> int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../jnisvmlight/FeatureVector.html#size()">size</A></B>()</CODE>
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<CODE> java.lang.String</CODE></FONT></TD>
<TD><CODE><B><A HREF="../jnisvmlight/FeatureVector.html#toString()">toString</A></B>()</CODE>
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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, wait, wait, wait</CODE></TD>
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