pt.tumba.ngram.bayes
Class VertexSet

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.VertexSet

All Implemented Interfaces:

java.io.Serializable

public class VertexSet
extends FinitelyGeneratedSet

See Also:

Serialized Form

Field Summary

(package private) ProbabilityVariable	auxiliary_variable
(package private) double[][]	extreme_points

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

VertexSet(BayesNet b_n, ProbabilityVariable[] pvs, double[][] ep, java.util.Vector prop)
Default constructor for a VertexQBProbabilityFunction.

VertexSet(BayesNet b_n, ProbabilityVariable[] pvs, double[] v, java.util.Vector prop, double[][] ep)
Constructor for a VertexQBProbabilityFunction.

VertexSet(ProbabilityFunction pf)
Constructor for a VertexQBProbabilityFunction.

VertexSet(ProbabilityFunction pf, double[] new_values)
Constructor for a VertexQBProbabilityFunction from a ProbabilityFunction object and new values.

Method Summary

void	compose_values() Produce the centroid of all extreme distributions and insert it into the values of the distribution.
private ProbabilityVariable	create_auxiliary_variable(BayesNet transformed_bn) Create an auxiliar variable to indicate the vertices.
private double[]	create_new_values(BayesNet transformed_bn) Create a new array of values that combines extreme points.
double	evaluate(java.lang.String[][] variable_value_pairs, int index_extreme_point) Evaluate a function given a list of pairs (Variable Value) which specifies a value of the function, and the index of the extreme distribution to consider.
ProbabilityVariable	get_auxiliary_variable() Methods that allow basic manipulation of non-public variables.
double[][]	get_extreme_points()
VertexSet	prepare_auxiliary_variable(BayesNet transformed_bn) Put together all the values for the possible vertices of credal set and create an auxiliary variable to indicate which vertex to consider There are three things to do: 1) Create an auxiliary_variable with correct values.
void	print(java.io.PrintStream out) Print method.
void	set_extreme_point(int index, double[] ep) Set an extreme point of the credal set.
void	set_local_credal_set(int number_extreme_points) Set the number of extreme distributions in the credal set.
void	set_value(java.lang.String[][] variable_value_pairs, double val, int index_extreme_point) Set a single value of the probability function.

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

get_lower_envelope, get_upper_envelope, 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

auxiliary_variable

ProbabilityVariable auxiliary_variable

extreme_points

double[][] extreme_points

Constructor Detail

VertexSet

public VertexSet(BayesNet b_n,
                 ProbabilityVariable[] pvs,
                 double[][] ep,
                 java.util.Vector prop)

Default constructor for a VertexQBProbabilityFunction.

VertexSet

public VertexSet(BayesNet b_n,
                 ProbabilityVariable[] pvs,
                 double[] v,
                 java.util.Vector prop,
                 double[][] ep)

Constructor for a VertexQBProbabilityFunction.

VertexSet

public VertexSet(ProbabilityFunction pf)

Constructor for a VertexQBProbabilityFunction.

VertexSet

public VertexSet(ProbabilityFunction pf,
                 double[] new_values)

Constructor for a VertexQBProbabilityFunction from a ProbabilityFunction object and new values.

Method Detail

prepare_auxiliary_variable

public VertexSet prepare_auxiliary_variable(BayesNet transformed_bn)

Put together all the values for the possible vertices of credal set and create an auxiliary variable to indicate which vertex to consider There are three things to do: 1) Create an auxiliary_variable with correct values. 2) Combine the values into a new array. 3) Insert the auxiliary_variable into the variables array.

create_new_values

private double[] create_new_values(BayesNet transformed_bn)

Create a new array of values that combines extreme points.

create_auxiliary_variable

private ProbabilityVariable create_auxiliary_variable(BayesNet transformed_bn)

Create an auxiliar variable to indicate the vertices.

evaluate

public double evaluate(java.lang.String[][] variable_value_pairs,
                       int index_extreme_point)

Evaluate a function given a list of pairs (Variable Value) which specifies a value of the function, and the index of the extreme distribution to consider.

set_value

public void set_value(java.lang.String[][] variable_value_pairs,
                      double val,
                      int index_extreme_point)

Set a single value of the probability function.

print

public void print(java.io.PrintStream out)

Print method.

Overrides:

print in class QBProbabilityFunction

compose_values

public void compose_values()

Produce the centroid of all extreme distributions and insert it into the values of the distribution.

set_local_credal_set

public void set_local_credal_set(int number_extreme_points)

Set the number of extreme distributions in the credal set.

set_extreme_point

public void set_extreme_point(int index,
                              double[] ep)

Set an extreme point of the credal set.

get_auxiliary_variable

public ProbabilityVariable get_auxiliary_variable()

Methods that allow basic manipulation of non-public variables.

get_extreme_points

public double[][] get_extreme_points()