update
Update fuzzy rule using fuzzy inference system
Syntax
Description
Examples
Create a fuzzy rule using a verbose text description.
rule = fisrule("if service is poor and food is delicious then tip is average (1)");Alternatively, you can specify the same rule using a symbolic text description.
rule = fisrule("service==poor & food==delicious => tip=average")rule =
fisrule with properties:
Description: "service==poor & food==delicious => tip=average (1)"
Antecedent: []
Consequent: []
Weight: 1
Connection: 1
Before using rule with a fuzzy system, update the rule Antecedent and Consequent properties using the update function.
fis = readfis("tipper");
rule = update(rule,fis)rule =
fisrule with properties:
Description: "service==poor & food==delicious => tip=average (1)"
Antecedent: [1 2]
Consequent: 2
Weight: 1
Connection: 1
Create a fuzzy rule using a numeric description. Specify that the rule has two input variables.
rule = fisrule([1 2 2 0.5 1],2)
rule =
fisrule with properties:
Description: "input1==mf1 & input2==mf2 => output1=mf2 (0.5)"
Antecedent: [1 2]
Consequent: 2
Weight: 0.5000
Connection: 1
Before using rule with a fuzzy system, update the rule Description property using the update function.
fis = readfis("tipper");
rule = update(rule,fis)rule =
fisrule with properties:
Description: "service==poor & food==delicious => tip=average (0.5)"
Antecedent: [1 2]
Consequent: 2
Weight: 0.5000
Connection: 1
Input Arguments
Fuzzy rule, specified as a fisrule object
or an array of fisrule objects. If rule was
created using a:
Text description, its
AntecedentandConsequentproperties are updated using the input and output membership function indices infisthat correspond to the membership function names in theDescriptionproperty ofruleNumeric description, its
Descriptionproperty is updated using the input and output membership function names infisthat correspond to the membership function indices in theAntecedentandConsequentproperties ofrule
If you specify rule as an array of fisrule
objects, then all of the rules are updated accordingly.
Fuzzy inference system, specified as one of these objects:
mamfis— Mamdani fuzzy inference systemsugfis— Sugeno fuzzy inference systemmamfistype2— Type-2 Mamdani fuzzy inference systemsugfistype2— Type-2 Sugeno fuzzy inference system
Version History
Introduced in R2018b
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