Fuzzy Subset Dependencies

Fuzzy Inclusion Dependencies in Fuzzy Databases

Crisp databases and fuzzy databases are developed to provide users with the ability to store data that can be used in deriving information satisfying their needs. The design of these databases requires several theoretical foundations, efficiency, and ease of use. Thus, they accommodate a wider range of real-world requirements and provide a friendlier environment for man-machine interaction. The...

The Theory of Functional and Subset Dependencies Over Relational Expressions

A formal system for reasoning about functional dependencies (FDs) and subset dependencies (SDS) defined over relational expressions is described. An FD e: X +Y indicates that Y is functionally dependent on X in the relation denoted by expression e; an SD e c f indicates that the relation denoted by e is a subset of that denoted by f. The system is shown to be sound and complete by resorting to ...

Fuzzy Dependencies between Preparedness and Learning Outcome

There is a large number of learning management systems as well as intelligent tutoring systems supporting today’s educational process. Some of these systems relay heavily on use and reuse of learning objects. A lot of work has been done on creating, storing, classifying and filtering learning objects with respect to a specific subject. Considerable amount of research focuses on facilitating the...

Incremental Discovery of Fuzzy Functional Dependencies

Multi-Dimensional Fuzzy Transforms for Attribute Dependencies

We explore attribute dependencies in the datasets by using direct and inverse fuzzy transforms. Our algorithm optimizes the fuzzy partitions of the universe of the attributes and moreover establishes if the set of the data points is sufficiently dense with respect to the chosen partitions: two specific regression indexes measure the reliability of our model. The known “El Nino” dataset is the b...