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16.1 Bayesian confidence regions based on fuzzy data

In the case of classical a priori distributions the generalization to the situation of fuzzy samples x1*,…, xn* is possible using the combined fuzzy sample *, whose vector-characterizing is denoted by ξ(.,…,.). The generalization is similar to that in Section 12.2.

Let Θ,1−α be a standard Bayesian confidence region for θ based on a classical sample = (x1,…,xn).

The Bayesian confidence region for θ based on a fuzzy sample, whose combined fuzzy sample has vector-characterizing function ξ:MXn→[0;1], is a fuzzy subset Θ1−α* of Θ whose membership function φ(·) is given by its values φ(θ) in the following way:

Remark 16.1:

For classical samples = (x1,…,xn) the membership function φ(·) reduces to the indicator function of Θ,1−α, i.e.

The proof ...

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