bayesianlogisticregression.html

来自「数据挖掘的最常用工具。由于开源」· HTML 代码 · 共 1,780 行 · 第 1/5 页

<HR>

<A NAME="iterationCounter"><!-- --></A><H3>
iterationCounter</H3>
<PRE>
public int <B>iterationCounter</B></PRE>
<DL>
<DD>Iteration counter
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="BetaVector"><!-- --></A><H3>
BetaVector</H3>
<PRE>
public double[] <B>BetaVector</B></PRE>
<DL>
<DD>Array for storing coefficients of Bayesian regression model.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="DeltaBeta"><!-- --></A><H3>
DeltaBeta</H3>
<PRE>
public double[] <B>DeltaBeta</B></PRE>
<DL>
<DD>Array to store Regression Coefficient updates.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="DeltaUpdate"><!-- --></A><H3>
DeltaUpdate</H3>
<PRE>
public double[] <B>DeltaUpdate</B></PRE>
<DL>
<DD>Trust Region Radius Update
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="Delta"><!-- --></A><H3>
Delta</H3>
<PRE>
public double[] <B>Delta</B></PRE>
<DL>
<DD>Trust Region Radius
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="Hyperparameters"><!-- --></A><H3>
Hyperparameters</H3>
<PRE>
public double[] <B>Hyperparameters</B></PRE>
<DL>
<DD>Array to store Hyperparameter values for each feature.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="R"><!-- --></A><H3>
R</H3>
<PRE>
public double[] <B>R</B></PRE>
<DL>
<DD>R(i)= BetaVector X x(i) X y(i).
 This an intermediate value with respect to vector BETA, input values and corresponding class labels
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="DeltaR"><!-- --></A><H3>
DeltaR</H3>
<PRE>
public double[] <B>DeltaR</B></PRE>
<DL>
<DD>This vector is used to store the increments on the R(i). It is also used to determining the stopping criterion.
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="Change"><!-- --></A><H3>
Change</H3>
<PRE>
public double <B>Change</B></PRE>
<DL>
<DD>This variable is used to keep track of change in
 the value of delta summation of r(i).
<P>
<DL>
</DL>
</DL>
<HR>

<A NAME="m_Filter"><!-- --></A><H3>
m_Filter</H3>
<PRE>
public <A HREF="../../../weka/filters/Filter.html" title="class in weka.filters">Filter</A> <B>m_Filter</B></PRE>
<DL>
<DD>Filter interface used to point to weka.filters.unsupervised.attribute.Normalize object
<P>
<DL>
</DL>
</DL>

<!-- ========= CONSTRUCTOR DETAIL ======== -->

<A NAME="constructor_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Constructor Detail</B></FONT></TH>
</TR>
</TABLE>

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

<!-- ============ METHOD DETAIL ========== -->

<A NAME="method_detail"><!-- --></A>
<TABLE BORDER="1" WIDTH="100%" CELLPADDING="3" CELLSPACING="0" SUMMARY="">
<TR BGCOLOR="#CCCCFF" CLASS="TableHeadingColor">
<TH ALIGN="left" COLSPAN="1"><FONT SIZE="+2">
<B>Method Detail</B></FONT></TH>
</TR>
</TABLE>

<A NAME="globalInfo()"><!-- --></A><H3>
globalInfo</H3>
<PRE>
public java.lang.String <B>globalInfo</B>()</PRE>
<DL>
<DD><DL>
</DL>
</DD>
<DD><DL>
</DL>
</DD>
</DL>
<HR>

<A NAME="initialize()"><!-- --></A><H3>
initialize</H3>
<PRE>
public void <B>initialize</B>()
                throws java.lang.Exception</PRE>
<DL>
<DD><pre>
 (1)Initialize m_Beta[j] to 0.
 (2)Initialize m_DeltaUpdate[j].
 </pre>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE></DL>
</DD>
</DL>
<HR>

<A NAME="getCapabilities()"><!-- --></A><H3>
getCapabilities</H3>
<PRE>
public <A HREF="../../../weka/core/Capabilities.html" title="class in weka.core">Capabilities</A> <B>getCapabilities</B>()</PRE>
<DL>
<DD>This method tests what kind of data this classifier can handle.
 return Capabilities
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/CapabilitiesHandler.html#getCapabilities()">getCapabilities</A></CODE> in interface <CODE><A HREF="../../../weka/core/CapabilitiesHandler.html" title="interface in weka.core">CapabilitiesHandler</A></CODE><DT><B>Overrides:</B><DD><CODE><A HREF="../../../weka/classifiers/Classifier.html#getCapabilities()">getCapabilities</A></CODE> in class <CODE><A HREF="../../../weka/classifiers/Classifier.html" title="class in weka.classifiers">Classifier</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the capabilities of this object<DT><B>See Also:</B><DD><A HREF="../../../weka/core/Capabilities.html" title="class in weka.core"><CODE>Capabilities</CODE></A></DL>
</DD>
</DL>
<HR>

<A NAME="buildClassifier(weka.core.Instances)"><!-- --></A><H3>
buildClassifier</H3>
<PRE>
public void <B>buildClassifier</B>(<A HREF="../../../weka/core/Instances.html" title="class in weka.core">Instances</A>&nbsp;data)
                     throws java.lang.Exception</PRE>
<DL>
<DD><ul>
         <li>(1) Set the data to the class attribute m_Instances.</li>
  <li>(2)Call the method initialize() to initialize the values.</li>
 </ul>
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/classifiers/Classifier.html#buildClassifier(weka.core.Instances)">buildClassifier</A></CODE> in class <CODE><A HREF="../../../weka/classifiers/Classifier.html" title="class in weka.classifiers">Classifier</A></CODE></DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>data</CODE> - training data
<DT><B>Throws:</B>
<DD><CODE>java.lang.Exception</CODE> - if classifier can't be built successfully.</DL>
</DD>
</DL>
<HR>

<A NAME="classSgn(double)"><!-- --></A><H3>
classSgn</H3>
<PRE>
public static double <B>classSgn</B>(double&nbsp;value)</PRE>
<DL>
<DD>This class is used to mask the internal class labels.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>value</CODE> - internal class label
<DT><B>Returns:</B><DD><pre>
 <ul><li>
  -1 for internal class label 0
  </li>
  <li>
  +1 for internal class label 1
  </li>
  </ul>
  </pre></DL>
</DD>
</DL>
<HR>

<A NAME="getTechnicalInformation()"><!-- --></A><H3>
getTechnicalInformation</H3>
<PRE>
public <A HREF="../../../weka/core/TechnicalInformation.html" title="class in weka.core">TechnicalInformation</A> <B>getTechnicalInformation</B>()</PRE>
<DL>
<DD>Returns an instance of a TechnicalInformation object, containing
 detailed information about the technical background of this class,
 e.g., paper reference or book this class is based on.
<P>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="../../../weka/core/TechnicalInformationHandler.html#getTechnicalInformation()">getTechnicalInformation</A></CODE> in interface <CODE><A HREF="../../../weka/core/TechnicalInformationHandler.html" title="interface in weka.core">TechnicalInformationHandler</A></CODE></DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>the technical information about this class</DL>
</DD>
</DL>
<HR>

<A NAME="bigF(double, double)"><!-- --></A><H3>
bigF</H3>
<PRE>
public static double <B>bigF</B>(double&nbsp;r,
                          double&nbsp;sigma)</PRE>
<DL>
<DD>This is a convient function that defines and upper bound
 (Delta>0) for values of r(i) reachable by updates in the
 trust region.

 r BetaVector X x(i)y(i).
 delta A parameter where sigma > 0
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>double function value</DL>
</DD>
</DL>
<HR>

<A NAME="stoppingCriterion()"><!-- --></A><H3>
stoppingCriterion</H3>
<PRE>
public boolean <B>stoppingCriterion</B>()</PRE>
<DL>
<DD>This method implements the stopping criterion
 function.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>boolean whether to stop or not.</DL>
</DD>
</DL>
<HR>

<A NAME="logisticLinkFunction(double)"><!-- --></A><H3>
logisticLinkFunction</H3>
<PRE>
public static double <B>logisticLinkFunction</B>(double&nbsp;r)</PRE>
<DL>
<DD>This method computes the values for the logistic link function.
  <pre>f(r)=exp(r)/(1+exp(r))</pre>
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>

<DT><B>Returns:</B><DD>output value</DL>
</DD>
</DL>
<HR>

<A NAME="sgn(double)"><!-- --></A><H3>
sgn</H3>
<PRE>
public static double <B>sgn</B>(double&nbsp;r)</PRE>
<DL>
<DD>Sign for a given value.
<P>
<DD><DL>
</DL>
</DD>
<DD><DL>
<DT><B>Parameters:</B><DD><CODE>r</CODE> - 
<DT><B>Returns:</B><DD>double +1 if r>0, -1 if r<0</DL>
</DD>
</DL>
<HR>

<A NAME="normBasedHyperParameter()"><!-- --></A><H3>
normBasedHyperParameter</H3>
<PRE>
public double <B>normBasedHyperParameter</B>()</PRE>
<DL>
<DD>This function computes the norm-based hyperparameters
        and stores them in the m_Hyperparameters.
<P>
<DD><DL>
</DL>