Package net.sf.tweety.beliefdynamics.mas

Class CredibilityCategorizer

java.lang.Object

net.sf.tweety.beliefdynamics.mas.AbstractCredibilityComparer

net.sf.tweety.beliefdynamics.mas.CredibilityCategorizer

All Implemented Interfaces:

Categorizer

public class CredibilityCategorizer
extends AbstractCredibilityComparer
implements Categorizer

This class implements a credibility-based categorizer that works like the classical categorizer but dismisses arguments where the least credible agent which uttered a formula in that argument is not as least as credible as the least credible agent which uttered a formula of the parent argument.

Author:

Matthias Thimm

Constructor Summary

Constructors

Constructor	Description
CredibilityCategorizer(java.util.Collection<InformationObject<PlFormula>> formulas, Order<Agent> credOrder)	Creates a new credibility categorizer that is guided by the giving information which agents uttered the formulas and the credibility order.

Method Summary

Modifier and Type	Method	Description
double	categorize(ArgumentTree argumentTree)	This method categorizes the given argument tree.
private double	categorize(ArgumentTree argumentTree, DeductiveArgumentNode parent, DeductiveArgumentNode node)	Performs the bottom-up search.

Methods inherited from class net.sf.tweety.beliefdynamics.mas.AbstractCredibilityComparer

isAtLeastAsPreferredAs, isAtLeastAsPreferredAs, isAtLeastAsPreferredAs

Methods inherited from class java.lang.Object

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

Constructor Detail

CredibilityCategorizer

public CredibilityCategorizer(java.util.Collection<InformationObject<PlFormula>> formulas,
                              Order<Agent> credOrder)

Creates a new credibility categorizer that is guided by the giving information which agents uttered the formulas and the credibility order.

Parameters:

formulas - The information objects that hold the information which agents uttered the formulas.

credOrder - The credibility order used to guide the categorizing.

Method Detail

categorize

public double categorize(ArgumentTree argumentTree)

Description copied from interface: Categorizer

This method categorizes the given argument tree. In general, the semantics of this function is that a higher value of this categorization means a higher belief in the claim of the root argument of the argument tree.

Specified by:

categorize in interface Categorizer

Parameters:

argumentTree - some argument tree.

Returns:

the categorization of the argument tree.

categorize

private double categorize(ArgumentTree argumentTree,
                          DeductiveArgumentNode parent,
                          DeductiveArgumentNode node)

Performs the bottom-up search.

Parameters:

argumentTree - some argument tree.

parent - the parent of the current node.

node - the current node.

Returns:

"1" if node is undefeated, "0" otherwise.