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NormalizeMidrange (Java Machine Learning Library 0.0.11)
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net.sf.javaml.filter</FONT>
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Class NormalizeMidrange</H2>
<PRE>
java.lang.Object
<IMG SRC="../../../../resources/inherit.gif" ALT="extended by "><B>net.sf.javaml.filter.NormalizeMidrange</B>
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<DT><B>All Implemented Interfaces:</B> <DD><A HREF="../../../../net/sf/javaml/filter/Filter.html" title="interface in net.sf.javaml.filter">Filter</A></DD>
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<DT><PRE>public class <B>NormalizeMidrange</B><DT>extends java.lang.Object<DT>implements <A HREF="../../../../net/sf/javaml/filter/Filter.html" title="interface in net.sf.javaml.filter">Filter</A></DL>
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<P>
This filter will normalize the dataset with a certain midrange and a certain range. Before you can apply this filter to a single instance, you'll need to apply it to a dataset. For example midrange 0 and range 2 would yield a dataset within the range [-1,1]. Each attribute of each instance is normalized seperately. For instance if you have three instances {-1;10}, {1,15} and {0,20} and you normalize with midrange 0 and range 2, you would get {-1,-1}, {1,0} and {0,1}. The default is normalization in the interval [-1,1].
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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/filter/NormalizeMidrange.html#NormalizeMidrange()">NormalizeMidrange</A></B>()</CODE>
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A normalization filter to the interval [-1,1]</TD>
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<TD><CODE><B><A HREF="../../../../net/sf/javaml/filter/NormalizeMidrange.html#NormalizeMidrange(double, double)">NormalizeMidrange</A></B>(double middle,
double range)</CODE>
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<CODE> <A HREF="../../../../net/sf/javaml/core/Dataset.html" title="interface in net.sf.javaml.core">Dataset</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/javaml/filter/NormalizeMidrange.html#filterDataset(net.sf.javaml.core.Dataset)">filterDataset</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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This method will apply the filter to all the Instances in the dataset.</TD>
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<CODE> <A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../net/sf/javaml/filter/NormalizeMidrange.html#filterInstance(net.sf.javaml.core.Instance)">filterInstance</A></B>(<A HREF="../../../../net/sf/javaml/core/Instance.html" title="interface in net.sf.javaml.core">Instance</A> instance)</CODE>
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This method will filter an instance according to the rules of this filter.</TD>
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