Abstract
This paper deals with the general problem of analyzing fuzzy inference based on functional dependencies (FDs) in database relations. Fuzzy inference, the ability to infer fuzzy set values, generalizes imprecise (set-valued) inference and precise inference. Likewise, fuzzy relational databases generalize their classical and imprecise counterparts by supporting fuzzy information storage and retrieval. Inference analysis is performed using a special abstract model which maintains vital links to classical, imprecise and fuzzy relational database models. These links increase the utility of the inference formalism in practical applications involving “catalytic inference analysis”, including knowledge discovery and database security.
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