Fuzzy NOT Operator

[Jared Broad]

Hey!

I love the fuzzy logic libraries, they work like a charm. However I have tried a myriad of combinations but can't find the correct linguistic syntax for using the "NOT" operator, e.g. the following below don't seem to work:

Code: Select all

If (Temperature Is Hot) Then Ac Is On     //OK
If (Temperature Is Cold) Then Ac Is Off     //OK

If (Temperature Is Not Warm) Then Ac Is On     //Fails
If (Temperature IsNot Warm) Then Ac Is On    //Fails
If (Temperature Is (NOT Warm)) Then AC is On    //Fails.
If (Temperature Is Hot Not Temperature Is Warm) Then Ac Is On.      //Fails....

"Linguistic variable NOT was not found on the database"

Any Ideas? Or am I making a conceptual mistake?

Thanks for your help,

Jared

[fabio.caversan]

Hi there,

Indeed, there is no NOT operator at the moment in the library. We will implement it soon. Meanwhile, I think you could use something like this:

For:

Code: Select all

If (Temperature Is Not Warm) Then Ac Is On


Use:

Code: Select all

If (Temperature Is Hot OR Temperature Is Cold) Then Ac Is On

If the other labels are Hot and Cold, this rule will generate the complement of Warm (in most cases).

Regards,

Caversan

[Jared Broad]

Thanks for your reply Fabio,

Best

Jared