Semantic measure of fuzzy data in extended possibility-based fuzzy relational databases
Zongmin Ma, Wenjun Zhang, Weiyin Ma · International Journal of Intelligent Systems · 2000
In this paper, we propose notions of equivalence and inclusion of fuzzy data in relational databases for measuring their semantic relationship. The fuzziness of data appears in attribute values in forms of possibility distribution as well as resemblance relations in attribute domain elements. An approach for evaluating semantic measures is presented. With the proposal, one can remove fuzzy data redundancy and define fuzzy functional dependency. © 2000 John Wiley & Sons, Inc.