RuleSettings
Tunable parameter settings of fuzzy rules
Description
Use a RuleSettings
object to specify the tunable parameter
settings for the rules of a fuzzy inference system.
Creation
Create a RuleSettings
object using getTunableSettings
. The third
output argument of getTunableSettings
contains a
RuleSettings
object for each rule in a fuzzy system.
Properties
This property is read-only.
Name of fuzzy inference system, represented as a string.
This property is read-only.
Index of rule in fuzzy inference system, represented as an integer.
Antecedent parameter settings, specified as a ClauseParameters
object with the following properties. The antecedent clause parameter values are the
membership functions corresponding to each input variable.
Property | Description | Default |
---|---|---|
Free | Available for tuning, specified as a logical | 1 for all elements |
AllowNot | Allow NOT logic in rule clauses, specified as a logical
| 0 for all elements |
AllowEmpty | Allow ignoring inputs and outputs in rule clauses, specified as a
logical | 1 for all elements |
Consequent parameter settings, specified as a ClauseParameters
object with the following properties. The consequent clause parameter values are the
membership functions corresponding to each output variable.
Property | Description | Default |
---|---|---|
Free | Available for tuning, specified as a logical | 1 for all elements |
AllowNot | Allow NOT logic in rule clauses, specified as a logical
| 0 for all elements |
AllowEmpty | Allow ignoring inputs and outputs in rule clauses, specified as a
logical | 1 for all elements |
Object Functions
setTunable | Set specified parameter settings as tunable or nontunable |
Examples
Create a fuzzy inference system.
fis = mamfis(Name="fis1",NumInputs=2,NumOutputs=1);
Obtain rule parameter settings from the FIS.
[~,~,rule] = getTunableSettings(fis);
Each rule parameter setting includes the FIS name, the index of the rule in the FIS, and parameter settings for the rule antecedent and consequent (the rule clauses). For each clause, you can specify the tunability settings.
View the default tunable settings for the antecedent of the first rule.
rule(1).Antecedent(1)
ans = ClauseParameters with properties: AllowNot: [0 0] AllowEmpty: [1 1] Free: [1 1]
You can use dot notation to specify the tunable settings for each rule.
Allow NOT logic in the antecedent of rule 1.
rule(1).Antecedent.AllowNot = true;
Make the consequent of rule 2 not available for tuning.
rule(2).Consequent.Free = 0;
Do not allow absence of a variable in the consequent of rule 3.
rule(3).Consequent.AllowEmpty = false;
Version History
Introduced in R2019a
See Also
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