Package ch.idsia.crema.factor.bayesian

Class BayesianOrFactor

java.lang.Object

ch.idsia.crema.factor.bayesian.BayesianAbstractFactor

ch.idsia.crema.factor.bayesian.BayesianFunctionFactor

ch.idsia.crema.factor.bayesian.BayesianLogicFactor

ch.idsia.crema.factor.bayesian.BayesianOrFactor

All Implemented Interfaces:

BayesianFactor, SeparatelySpecified<BayesianFactor>, FilterableFactor<BayesianFactor>, GenericFactor, OperableFactor<BayesianFactor>

public class BayesianOrFactor
extends BayesianLogicFactor

Author: Claudio "Dna" Bonesana Project: crema Date: 16.08.2021 15:33

Field Summary

Fields inherited from class ch.idsia.crema.factor.bayesian.BayesianLogicFactor

isObserved, observedState, observedStates, observedVariables, parents, trueStates, variable

Fields inherited from class ch.idsia.crema.factor.bayesian.BayesianFunctionFactor

f

Fields inherited from class ch.idsia.crema.factor.bayesian.BayesianAbstractFactor

domain

Constructor Summary

Constructors

Modifier	Constructor	Description
	BayesianOrFactor(Strides domain, int... parents)	An OR factor where the true state for each parent is the higher state available.
	BayesianOrFactor(Strides domain, int[] parents, int[] trueStates)	An OR factor where the true states for each parent are defined externally.
protected	BayesianOrFactor(BayesianOrFactor factor, int variable, int state)

Method Summary

Modifier and Type	Method	Description
BayesianFactor	copy()
protected double	f(int offset)
BayesianAbstractFactor	filter(int variable, int state)	Reduces the domain by removing a variable and selecting the specified state.
String	toString()

Methods inherited from class ch.idsia.crema.factor.bayesian.BayesianLogicFactor

getParents, getTrueStates, getVariable

Methods inherited from class ch.idsia.crema.factor.bayesian.BayesianFunctionFactor

getData, getLogValue, getLogValueAt, getValue, getValueAt, logProb, setF

Methods inherited from class ch.idsia.crema.factor.bayesian.BayesianAbstractFactor

collect, combine, combine, divide, divide, equals, getDataDomain, getDomain, getSeparatingDomain, hashCode, marginalize, sample

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface ch.idsia.crema.factor.FilterableFactor

filter

Methods inherited from interface ch.idsia.crema.factor.GenericFactor

isLog

Methods inherited from interface ch.idsia.crema.factor.OperableFactor

combine, combine, marginalize, normalize

Constructor Detail

BayesianOrFactor

public BayesianOrFactor(Strides domain,
                        int[] parents,
                        int[] trueStates)

An OR factor where the true states for each parent are defined externally.

Parameters:

domain - working domain of this factor

parents - variables that are parents of this factor

trueStates - index of the state to be considered as TRUE for each given parent

BayesianOrFactor

public BayesianOrFactor(Strides domain,
                        int... parents)

An OR factor where the true state for each parent is the higher state available.

Parameters:

domain - working domain of this factor

parents - variables that are parents of this factor

BayesianOrFactor

protected BayesianOrFactor(BayesianOrFactor factor,
                           int variable,
                           int state)

Method Detail

f

protected double f(int offset)

Parameters:

offset - offset to get the value for

Returns:

1.0 when at least one of the parents is in the TRUE state, otherwise 0.0

copy

public BayesianFactor copy()

Returns:

a copy of the factor

filter

public BayesianAbstractFactor filter(int variable,
                                     int state)

Description copied from class: BayesianAbstractFactor

Reduces the domain by removing a variable and selecting the specified state.

This default implementation uses a SimpleBayesianFilter as BayesianCollector and checks if this factor GenericFactor.isLog(): if true builds a BayesianDefaultFactor else a BayesianDefaultFactor.

Specified by:

filter in interface BayesianFactor

Specified by:

filter in interface FilterableFactor<BayesianFactor>

Specified by:

filter in interface OperableFactor<BayesianFactor>

Overrides:

filter in class BayesianAbstractFactor

Parameters:

variable - the variable to be filtered out

state - the state to be selected

Returns:

if we are in log-space, a BayesianLogFactor else a BayesianDefaultFactor

toString

public String toString()

Overrides:

toString in class BayesianFunctionFactor