Class DDConditionalEstimator

java.lang.Object
weka.estimators.DDConditionalEstimator
All Implemented Interfaces:
RevisionHandler, ConditionalEstimator

public class DDConditionalEstimator extends Object implements ConditionalEstimator
Conditional probability estimator for a discrete domain conditional upon a discrete domain.
Version:
$Revision: 1.8 $
Author:
Len Trigg (trigg@cs.waikato.ac.nz)
  • Constructor Summary

    Constructors
    Constructor
    Description
    DDConditionalEstimator(int numSymbols, int numCondSymbols, boolean laplace)
    Constructor
  • Method Summary

    Modifier and Type
    Method
    Description
    void
    addValue(double data, double given, double weight)
    Add a new data value to the current estimator.
    getEstimator(double given)
    Get a probability estimator for a value
    double
    getProbability(double data, double given)
    Get a probability estimate for a value
    Returns the revision string.
    static void
    main(String[] argv)
    Main method for testing this class.
    Display a representation of this estimator

    Methods inherited from class java.lang.Object

    equals, getClass, hashCode, notify, notifyAll, wait, wait, wait
  • Constructor Details

    • DDConditionalEstimator

      public DDConditionalEstimator(int numSymbols, int numCondSymbols, boolean laplace)
      Constructor
      Parameters:
      numSymbols - the number of possible symbols (remember to include 0)
      numCondSymbols - the number of conditioning symbols
      laplace - if true, sub-estimators will use laplace
  • Method Details

    • addValue

      public void addValue(double data, double given, double weight)
      Add a new data value to the current estimator.
      Specified by:
      addValue in interface ConditionalEstimator
      Parameters:
      data - the new data value
      given - the new value that data is conditional upon
      weight - the weight assigned to the data value
    • getEstimator

      public Estimator getEstimator(double given)
      Get a probability estimator for a value
      Specified by:
      getEstimator in interface ConditionalEstimator
      Parameters:
      given - the new value that data is conditional upon
      Returns:
      the estimator for the supplied value given the condition
    • getProbability

      public double getProbability(double data, double given)
      Get a probability estimate for a value
      Specified by:
      getProbability in interface ConditionalEstimator
      Parameters:
      data - the value to estimate the probability of
      given - the new value that data is conditional upon
      Returns:
      the estimated probability of the supplied value
    • toString

      public String toString()
      Display a representation of this estimator
      Overrides:
      toString in class Object
    • getRevision

      public String getRevision()
      Returns the revision string.
      Specified by:
      getRevision in interface RevisionHandler
      Returns:
      the revision
    • main

      public static void main(String[] argv)
      Main method for testing this class.
      Parameters:
      argv - should contain a sequence of pairs of integers which will be treated as symbolic.