net.sourceforge.jFuzzyLogic.rule
Class FuzzyRuleExpression

java.lang.Object
  net.sourceforge.jFuzzyLogic.rule.FuzzyRuleExpression

public class FuzzyRuleExpression
extends java.lang.Object

General rule expression term E.g.: "(temp IS hot AND pressure IS high) OR pressure IS low"

Author:

pcingola@users.sourceforge.net

Field Summary

(package private) boolean	negated Is it negated?
(package private) RuleConnectionMethod	ruleConnectionMethod How are term1 and term2 connected?
(package private) java.lang.Object	term1 Term1 can be a either a 'FuzzyRuleTerm' or 'FuzzyRuleExpression'
(package private) java.lang.Object	term2 Term2 can be a either a 'FuzzyRuleTerm' or 'FuzzyRuleExpression'

Constructor Summary

FuzzyRuleExpression()
Default Constructor

FuzzyRuleExpression(java.lang.Object term1, java.lang.Object term2, RuleConnectionMethod ruleConnectionMethod)
Constructor

Method Summary

void	add(FuzzyRuleTerm fuzzyRuleTerm) Add a new term (using default AND method)
private void	addVariables(java.util.LinkedList linkedListVariables) Add every variable to this list
double	evaluate() Evaluate this expression
RuleConnectionMethod	getRuleConnectionMethod()
java.lang.Object	getTerm1()
java.lang.Object	getTerm2()
boolean	isFuzzyRuleExpression(java.lang.Object term) Is this term an expression ('FuzzyRuleExpression')
boolean	isFuzzyRuleTerm(java.lang.Object term) Is this term a FuzzyRuleTerm
boolean	isNegated()
boolean	isValidTerm(java.lang.Object term) Is this a valid term? (only a few objects are acceped as 'terms')
java.util.Iterator	iteratorVariables() Iterate on every variable
void	setNegated(boolean negated)
void	setRuleConnectionMethod(RuleConnectionMethod ruleConnectionMethod)
void	setTerm1(java.lang.Object term1)
void	setTerm2(java.lang.Object term2)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

negated

boolean negated

Is it negated?

ruleConnectionMethod

RuleConnectionMethod ruleConnectionMethod

How are term1 and term2 connected?

term1

java.lang.Object term1

Term1 can be a either a 'FuzzyRuleTerm' or 'FuzzyRuleExpression'

term2

java.lang.Object term2

Term2 can be a either a 'FuzzyRuleTerm' or 'FuzzyRuleExpression'

Constructor Detail

FuzzyRuleExpression

public FuzzyRuleExpression()

Default Constructor

FuzzyRuleExpression

public FuzzyRuleExpression(java.lang.Object term1,
                           java.lang.Object term2,
                           RuleConnectionMethod ruleConnectionMethod)

Constructor

Parameters:

term1 - : term 1 (can be a either a 'FuzzyRuleTerm' or 'FuzzyRuleExpression')

term2 - : term 2 (can be a either a 'FuzzyRuleTerm' or 'FuzzyRuleExpression')

ruleConnectionMethod - : connection method between terms (which method is used for each 'and', 'or', 'not'...)

Method Detail

add

public void add(FuzzyRuleTerm fuzzyRuleTerm)

Add a new term (using default AND method)

Parameters:

fuzzyRuleTerm - : term to add

addVariables

private void addVariables(java.util.LinkedList linkedListVariables)

Add every variable to this list

Parameters:

linkedListVariables -

evaluate

public double evaluate()

Evaluate this expression

Returns:

evaluation's result

getRuleConnectionMethod

public RuleConnectionMethod getRuleConnectionMethod()

getTerm1

public java.lang.Object getTerm1()

getTerm2

public java.lang.Object getTerm2()

isFuzzyRuleExpression

public boolean isFuzzyRuleExpression(java.lang.Object term)

Is this term an expression ('FuzzyRuleExpression')

Parameters:

term - : term to analize

Returns:

true if it's an 'FuzzyRuleExpression', false otherwise

isFuzzyRuleTerm

public boolean isFuzzyRuleTerm(java.lang.Object term)

Is this term a FuzzyRuleTerm

Parameters:

term - : term to analize

Returns:

true if it's an 'FuzzyRuleTerm', false otherwise

isNegated

public boolean isNegated()

isValidTerm

public boolean isValidTerm(java.lang.Object term)

Is this a valid term? (only a few objects are acceped as 'terms')

Parameters:

term - : Term to evaluate

iteratorVariables

public java.util.Iterator iteratorVariables()

Iterate on every variable

Returns:

a 'variables' iterator

setNegated

public void setNegated(boolean negated)

setRuleConnectionMethod

public void setRuleConnectionMethod(RuleConnectionMethod ruleConnectionMethod)

setTerm1

public void setTerm1(java.lang.Object term1)

setTerm2

public void setTerm2(java.lang.Object term2)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object