Re: Transfoming probability distributions into fuzzy sets -

Alexandre Evsukoff (evsukoff@lag.ensieg.inpg.fr)
Sun, 22 Nov 1998 17:26:43 +0100 (MET)

Prezado Mario,

Nao conheco metodo para representar incerteza associada a um numero por um
unico valor. Entretanto, se representas a incerteza na forma de um
distribuicao de possibilidades, podes calcular um "envelope" que engloba o
valor preciso, representando os graus de possibilidade (limite superior) e
necessidade (limite inferior) para utilizar em seguida em inferencias.

Da uma olhada em:

Foulloy and Galichet: "Typologie of fuzzy controlers". Theoretical Aspects
of Fuzzy Control. h. Nguyen et al. (editors) J. Wiley Publishers,1995.

Eu venho de terminar meu doutorado e estarei voltando ao Brasil em breve. Se
voce quiser, nos podemos discutir mais adiante.

Um abraco

Alendre Evsukoff

A 23:52 15/11/98 +0100, mariosb a écrit:
>Fuzzy number can be represent aspects of fuzziness, ambiguity,
>imprecision and others forms of the uncertainty presents in data. It's
>possible to obtain quantitative measures of these aspects? I know a
>fuzziness index and a ambiguity index related in the literature, but I
>don't know formulations of the one fuzzy imprecision index. I think that
>the one fuzzy imprecision index can derive the theoretical comparsion of
>probability density and membership functions formulations. Can someboby
>point to papers or aspects about the construct of this index.
>
>Thanks,
> Mario Cesar S. Barboza
>
>
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