Main Content

removeInput

Remove input variable from fuzzy inference system

collapse all in page

Syntax

fisOut = removeInput(fisIn,inputName)

Description

fisOut = removeInput(fisIn,inputName) removes the input variable with the name inputName from fuzzy inference system fisIn and returns the resulting fuzzy system in fisOut.

example

Examples

collapse all

Open Live Script

Load fuzzy system.

fis = readfis("tipper");

View the input variables of fis.

fis.Inputs
ans = 
  1x2 fisvar array with properties:

    Name
    Range
    MembershipFunctions

  Details:
           Name        Range     MembershipFunctions
         _________    _______    ___________________

    1    "service"    0    10        {1x3 fismf}    
    2    "food"       0    10        {1x2 fismf}

View the rules of fis.

fis.Rules
ans = 
  1x3 fisrule array with properties:

    Description
    Antecedent
    Consequent
    Weight
    Connection

  Details:
                                Description                        
         __________________________________________________________

    1    "service==poor | food==rancid => tip=cheap (1)"           
    2    "service==good => tip=average (1)"                        
    3    "service==excellent | food==delicious => tip=generous (1)"

Remove the service input variable.

fis = removeInput(fis,"service");

View the updated input variables.

fis.Inputs
ans = 
  fisvar with properties:

                   Name: "food"
                  Range: [0 10]
    MembershipFunctions: [1x2 fismf]

View the updated rules.

fis.Rules
ans = 
  1x2 fisrule array with properties:

    Description
    Antecedent
    Consequent
    Weight
    Connection

  Details:
                      Description             
         _____________________________________

    1    "food==rancid => tip=cheap (1)"      
    2    "food==delicious => tip=generous (1)"

service has been removed from the variables and rules of fis.

Input Arguments

collapse all

Fuzzy inference system, specified as one of the following:

  • mamfis object — Mamdani fuzzy inference system

  • sugfis object — Sugeno fuzzy inference system

  • mamfistype2 object — Type-2 Mamdani fuzzy inference system

  • sugfistype2 object — Type-2 Sugeno fuzzy inference system

Input variable name, specified as a string or character vector.

Output Arguments

collapse all

Updated fuzzy inference system, returned as one of the following objects.

  • mamfis object — Mamdani fuzzy inference system

  • sugfis object — Sugeno fuzzy inference system

  • mamfistype2 object — Type-2 Mamdani fuzzy inference system

  • sugfistype2 object — Type-2 Sugeno fuzzy inference system

fisOut has the same properties as fisIn except:

  • The input variable with the specified name is removed.

  • The specified input variable is removed from any fuzzy rules. If a rule has only the specified input variable in its antecedent, then the entire rule is removed. If a rule has more than one input variable in its antecedent, then the specified input variable is removed from the antecedent.

Version History

Introduced in R2018b

expand all

See Also

|

Topics