[Fis] PS: Interval type-2 fuzzy logic systems

[Krassimir Markov]

Dear Kate,

Probably Yin and Yang should be modeled not as points but as intervals,
respectively Yin as the interval [-1,0) and Yang as the interval (0,1].

Arguably, too, emotions are not dots but corresponding intervals.

It might be good to use fuzzy membership functions of type 2.
An illustration is given at
https://urldefense.com/v3/__https://www.mathworks.com/help/fuzzy/fismftype2.html__;!!D9dNQwwGXtA!Sf-mGwAzApAtgVlE0S62esAzuRuDk5c05VRswnpRj2MQcnyrWuzdu44dHhxK9I_VDcQjmJyiKfZdcuwzaw4$ .
A more detailed description is available on Wikipedia, for example
(
https://urldefense.com/v3/__https://en.wikipedia.org/wiki/Type-2_fuzzy_sets_and_systems*Interval_type-2_fuzzy_logic_systems__;Iw!!D9dNQwwGXtA!Sf-mGwAzApAtgVlE0S62esAzuRuDk5c05VRswnpRj2MQcnyrWuzdu44dHhxK9I_VDcQjmJyiKfZdRvHggpY$ 
)

But let's not forget that these are just mathematical abstractions designed
to make reasoning about the complex real world easier.

With respect,
Krassimir
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