pt.tumba.ngram.bayes
Class EpsilonContaminatedSet

java.lang.Object
  pt.tumba.ngram.bayes.DiscreteFunction
      pt.tumba.ngram.bayes.ProbabilityFunction
          pt.tumba.ngram.bayes.QBProbabilityFunction
              pt.tumba.ngram.bayes.FinitelyGeneratedSet
                  pt.tumba.ngram.bayes.EpsilonContaminatedSet

All Implemented Interfaces:

java.io.Serializable

public class EpsilonContaminatedSet
extends FinitelyGeneratedSet

See Also:

Serialized Form

Field Summary

(package private) double

epsilon

Fields inherited from class pt.tumba.ngram.bayes.QBProbabilityFunction

lower_envelope, upper_envelope

Fields inherited from class pt.tumba.ngram.bayes.ProbabilityFunction

bn, properties

Fields inherited from class pt.tumba.ngram.bayes.DiscreteFunction

values, variables

Constructor Summary

EpsilonContaminatedSet(ProbabilityFunction pf, double eps)
Constructor for an EpsilonContaminatedSet ProbabilityFunction object and given epsilon.

Method Summary

double[]	expected_values(DiscreteFunction df) Perform calculation of expected value.
double[]	posterior_expected_values(DiscreteFunction df) Perform calculation of posterior expected value.
ProbabilityFunction	posterior_marginal() Perform calculation of marginal posterior distributions for an epsilon-contaminated global neighborhood The method assumes that the values in the EpsilonContaminated are actually unnormalized --- if not, incorrect results are produced.

Methods inherited from class pt.tumba.ngram.bayes.QBProbabilityFunction

get_lower_envelope, get_upper_envelope, print, print

Methods inherited from class pt.tumba.ngram.bayes.ProbabilityFunction

add_property, evaluate, evaluate, expected_value, get_enumerated_properties, get_position_from_indexes, get_properties, posterior_expected_value, process_properties, remove_property, remove_property, save_xml_0_3, save_xml, set_properties, set_value, variance

Methods inherited from class pt.tumba.ngram.bayes.DiscreteFunction

evaluate, get_index, get_indexes, get_position_from_indexes, get_value, get_values, get_variable, get_variables, memberOf, multiply, normalize_first, normalize, number_values, number_variables, same_variables, set_value, set_values, set_variable, sum_out

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

epsilon

double epsilon

Constructor Detail

EpsilonContaminatedSet

public EpsilonContaminatedSet(ProbabilityFunction pf,
                              double eps)

Constructor for an EpsilonContaminatedSet ProbabilityFunction object and given epsilon.

Method Detail

posterior_marginal

public ProbabilityFunction posterior_marginal()

Perform calculation of marginal posterior distributions for an epsilon-contaminated global neighborhood The method assumes that the values in the EpsilonContaminated are actually unnormalized --- if not, incorrect results are produced.

expected_values

public double[] expected_values(DiscreteFunction df)

Perform calculation of expected value.

posterior_expected_values

public double[] posterior_expected_values(DiscreteFunction df)

Perform calculation of posterior expected value. Assumes that the probability values are not normalized; probability values are p(x, e) where e is the fixed evidence.