A Fuzzy Probabilistic Relational Database Model and Algebra
نویسندگان
چکیده
This paper describes an extended relational database model based on probability theory and possibility theory. Fuzzy information and probabilistic information are incorporated into the relational databases simultaneously to represent fuzzy probability of events in the real-world applications. The tuples in such a relation are associated with a possibility distribution, and their attribute values may be uncertain and represented by probabilistic distributions. Such relational databases are called fuzzy probabilistic relational databases. The structure of the fuzzy probabilistic relational model is proposed in the paper. On the basis, the primitive and natural join operations of the algebra are developed.
منابع مشابه
An Algebra for Probabilistic Databases
An algebra is presented for a simple probabilistic data model that may be regarded as an extension of the standard relational model. The probabilistic algebra is developed in such a way that (restricted to α -acyclic database schemes) the relational algebra is a homomorphic image of it. Strictly probabilistic results are emphasized. Variations on the basic probabilistic data model are discussed...
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