Package net.sf.tweety.arg.delp.syntax

Class StrictRule

java.lang.Object

net.sf.tweety.logics.commons.syntax.RelationalFormula

net.sf.tweety.arg.delp.syntax.DelpRule

net.sf.tweety.arg.delp.syntax.StrictRule

All Implemented Interfaces:

Formula, Rule<FolFormula,FolFormula>, ClassicalFormula, ComplexLogicalFormula, Conjunctable, Disjunctable, Invertable, LogicStructure, ProbabilityAware, QuantifiedFormula, SimpleLogicalFormula

public class StrictRule
extends DelpRule

This class models a strict rule in defeasible logic programming.

Author:

Matthias Thimm

Constructor Summary

Constructors

Constructor	Description
StrictRule(FolFormula head, java.util.Set<FolFormula> body)	Default constructor; initializes head and body of the strict rule

Method Summary

Modifier and Type	Method	Description
RelationalFormula	clone()	Creates a deep copy of this formula
RelationalFormula	substitute(Term<?> v, Term<?> t)	Substitutes all occurrences of term "v" in this formula by term "t" and returns the new formula.

Methods inherited from class net.sf.tweety.arg.delp.syntax.DelpRule

addPremise, addPremises, combineWithAnd, combineWithOr, complement, containsQuantifier, equals, getAtoms, getConclusion, getFunctors, getPredicates, getPremise, getQuantifierVariables, getSignature, getTerms, getTerms, getUnboundVariables, getUniformProbability, hashCode, isApplicable, isClosed, isClosed, isConstraint, isFact, isGround, isLiteral, isWellBound, isWellBound, setConclusion, toString

Methods inherited from class net.sf.tweety.logics.commons.syntax.RelationalFormula

allGroundInstances, allSubstitutions, containsTermsOfType, exchange, getFormula, getPredicateCls, getSatisfactionRatio, isWellFormed, substitute

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

StrictRule

public StrictRule(FolFormula head,
                  java.util.Set<FolFormula> body)

Default constructor; initializes head and body of the strict rule

Parameters:

head - a literal

body - a set of literals

Method Detail

substitute

public RelationalFormula substitute(Term<?> v,
                                    Term<?> t)
                             throws java.lang.IllegalArgumentException

Description copied from class: RelationalFormula

Substitutes all occurrences of term "v" in this formula by term "t" and returns the new formula. NOTE: if "v" is a variable and bound to a quantifier then "v" is not substituted in that quantifiers inner formula.

Specified by:

substitute in interface ComplexLogicalFormula

Specified by:

substitute in class DelpRule

Parameters:

v - the term to be substituted.

t - the term to substitute.

Returns:

a formula where every occurrence of "v" is replaced by "t".

Throws:

java.lang.IllegalArgumentException - if "v" and "t" are of different sorts (NOTE: this exception is only thrown when "v" actually appears in this formula).

clone

public RelationalFormula clone()

Description copied from interface: SimpleLogicalFormula

Creates a deep copy of this formula

Specified by:

clone in interface ComplexLogicalFormula

Specified by:

clone in interface SimpleLogicalFormula

Specified by:

clone in class RelationalFormula

Returns:

the cloned formula