psigmf

Product of two sigmoidal membership functions

Syntax

y = psigmf(x,[a1 c1 a2 c2]) 

Description

The sigmoid curve plotted for the vector x depends on two parameters a and c as given by

f(x;a,c)=11+ea(xc)

psigmf is simply the product of two such curves plotted for the values of the vector x

f1(x; a1, c1) × f2(x; a2, c2)

The parameters are listed in the order [a1 c1 a2 c2].

Examples

expand all

Product of Two Sigmoidal Membership Functions

x = 0:0.1:10;
y = psigmf(x,[2 3 -5 8]);
plot(x,y)
xlabel('psigmf, P=[2 3 -5 8]')
ylim([-0.05 1.05])

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