On ordered weighted averaging aggregation operators in multicriteria decisionmaking
IEEE Transactions on Systems, Man and Cybernetics
Modelling class hierarchies in the fuzzy object-oriented data model
Fuzzy Sets and Systems
Semantics of quotient operators in fuzzy relational databases
Fuzzy Sets and Systems
Flexible queries in relational databases—the example of the division operator
Selected papers from the international workshop on Uncertainty in databases and deductive systems
Using OWA operator in flexible query processing
The ordered weighted averaging operators
Imprecision and uncertainty in the UFO database model
Journal of the American Society for Information Science - Special issue: management of imprecision and uncertainty
The object data standard: ODMG 3.0
The object data standard: ODMG 3.0
Fuzzy division in fuzzy relational databases: an approach
Fuzzy Sets and Systems
IFOOD: An Intelligent Fuzzy Object-Oriented Database Architecture
IEEE Transactions on Knowledge and Data Engineering
Generalized OWA Aggregation Operators
Fuzzy Optimization and Decision Making
Advances In Fuzzy Object-oriented Databases: Modeling And Applications
Advances In Fuzzy Object-oriented Databases: Modeling And Applications
Development of applications with fuzzy objects in modern programming platforms: Research Articles
International Journal of Intelligent Systems - Introduction to Software Engineering with Computational Intelligence
Managing fuzziness on conventional object-oriented platforms: Research Articles
International Journal of Intelligent Systems
Characterizing the result of the division of fuzzy relations
International Journal of Approximate Reasoning
About quotient and division of crisp and fuzzy relations
Journal of Intelligent Information Systems
pg4DB: A fuzzy object-relational system
Fuzzy Sets and Systems
Tolerant division queries and possibilistic database querying
Fuzzy Sets and Systems
A Survey on Fuzzy Implication Functions
IEEE Transactions on Fuzzy Systems
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The division operator is well known in the context of fuzzy relational databases. Fuzzy approaches to this operator can be found in the literature to solve flexible queries: these approaches try to compute to which extent each element of a candidate set is connected with a given (fuzzy) set of elements. This kind of queries is also interesting in the framework of fuzzy object databases, where the management of complex objects instead of plain tuples causes additional difficulties. The presence of fuzzily described objects in the database makes necessary to use suitable operators that take into account the resemblance that governs the comparison in the underlying reference universe. In this paper, we propose a method to solve this type of queries founded on the use of fuzzy inclusion operators. We study two different alternatives for the way resemblance is considered and we also analyze the role of cardinality in the process.