pt.tumba.ngram.bayes
Class ConstantDensityRatioSet

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.ConstantDensityRatioSet

All Implemented Interfaces:

java.io.Serializable, MappingDouble

public class ConstantDensityRatioSet
extends FinitelyGeneratedSet
implements MappingDouble

See Also:

Serialized Form

Field Summary

private static double	ACCURACY
private double	k
private static int	LOWER_EXPECTATION_BRACKET
private DiscreteFunction	temporary_discrete_function
private static int	UPPER_EXPECTATION_BRACKET

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

ConstantDensityRatioSet(ProbabilityFunction pf, double kk)
Constructor for an ConstantDensityRatioSet ProbabilityFunction object and given constant.

Method Summary

double[]	expected_values(DiscreteFunction df) Perform calculation of expected value for density ratio.
double	map(int map_type, double map_input) To conform to the Mapping interface demanded by the Bracketing class, the method map() must be present.
double[]	posterior_expected_values(DiscreteFunction df) Perform calculation of posterior expected value.
ProbabilityFunction	posterior_marginal() Perform calculation of marginal posterior distributions for.

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

k

private double k

temporary_discrete_function

private DiscreteFunction temporary_discrete_function

LOWER_EXPECTATION_BRACKET

private static final int LOWER_EXPECTATION_BRACKET

See Also:

Constant Field Values

UPPER_EXPECTATION_BRACKET

private static final int UPPER_EXPECTATION_BRACKET

See Also:

Constant Field Values

ACCURACY

private static final double ACCURACY

See Also:

Constant Field Values

Constructor Detail

ConstantDensityRatioSet

public ConstantDensityRatioSet(ProbabilityFunction pf,
                               double kk)

Constructor for an ConstantDensityRatioSet ProbabilityFunction object and given constant.

Method Detail

posterior_marginal

public ProbabilityFunction posterior_marginal()

Perform calculation of marginal posterior distributions for. a density ratio global neighborhood.

expected_values

public double[] expected_values(DiscreteFunction df)

Perform calculation of expected value for density ratio.

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

map

public double map(int map_type,
                  double map_input)

To conform to the Mapping interface demanded by the Bracketing class, the method map() must be present.

Specified by:

map in interface MappingDouble