implementation of Sigmoid Membership Function
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hi
how to implement sigmoid membership function that takes just one value (singleton) as in picture below :
when i add MF in the matlab and select the MF type as "sigmf" it draws a MF that takes 2 parameters as in the picture below , so how could i implement MF as in the picture above ?
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Maria
2014-6-11
Maria
2014-6-11
José-Luis
2014-6-11
I am maybe misunderstanding, but you might have to use a different membership function. One that is not a sigmoid. I don't see how what you show in the upper plot can be interpreted as a sigmoid.
A sigmoid, as implemented by Matlab takes two parameters, you could make one of those parameters a function of the other so you have only one variable, but I still don't understand what you are trying to achieve.
José-Luis
2014-6-12
If one squints the right way, it looks like a series of trapezoidal membership functions.
doc trapmf
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