How can I use custom membership functions in ANFIS?

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Tooba Shelkh 2022-6-26

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1748365-how-can-i-use-custom-membership-functions-in-anfis

评论： Amritesh 2022-6-26

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I am trying to use custom MFs in anfis, instead of the preset bellMF?

I have followed the steps in this link, but how do I use it afterwards in my code?

For example in the example provided, we have:

load fuzex1trnData.dat
fis = anfis(fuzex1trnData);

Now how do I use the FIS (customfis) with the custom MF that I created using FuzzyLogicDesigner?

Any help is appreciated.

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Answer 1

Amritesh 2022-6-26

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https://ww2.mathworks.cn/matlabcentral/answers/1748365-how-can-i-use-custom-membership-functions-in-anfis#answer_993810

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If you have already made FIS, then use fis = anfis(trainingData,options) and in options use that custom FIS.

If not then, first add custom membership function to a FIS like

myFIS = addMF(myFIS,"input1","custmf1",[0 1 2 4 6 8 9 10],'Name',"customMF1");

Documentation Links:

Hope this solves your problem.

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Tooba Shelkh 2022-6-26

I want to train ANFIS on my custom MF. It is not allowing me to do that, it requires me to add built-in MF for that purpose. It does not generate the rules from my custom MF.

Amritesh 2022-6-26

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You can define an initial FIS structure using genfisOptions

genOpt = genfisOptions('GridPartition');
genOpt.NumMembershipFunctions = num;
genOpt.InputMembershipFunctionType = 'cumstomMF1'; % Here you use your custom MF
inFIS = genfis(x,y,genOpt);