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If several rules have the same variable in conclusion, they have to
be fired in parallel and all their
conclusion fuzzy sets have to be aggregated
in one fuzzy set to be used as entry for others rules. Conclusion fuzzy
sets are aggregated with the min operator to take into account uncertainty
in the final fuzzy set. If n rules, fired in parallel, produce n
fuzzy sets 
, the final fuzzy set 
is obtained by:
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Nevertheless, if there is no consistency in the rules base the final
fuzzy set
has to be normalized [3] by:
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