Fuzzy functional dependencies and lossless join decomposition of fuzzy relational database systems
ACM Transactions on Database Systems (TODS)
An adaptive conjugate gradient learning algorithm for efficient training of neural networks
Applied Mathematics and Computation
Fuzzy relational algebra for possibility-distribution-fuzzy-relational model of fuzzy data
Journal of Intelligent Information Systems
Imprecision and uncertainty in the UFO database model
Journal of the American Society for Information Science - Special issue: management of imprecision and uncertainty
The entity-relationship model—toward a unified view of data
ACM Transactions on Database Systems (TODS) - Special issue: papers from the international conference on very large data bases: September 22–24, 1975, Framingham, MA
An extended database design methodology for uncertain data management
Information Sciences—Informatics and Computer Science: An International Journal
Entity-Relationship Modeling and Fuzzy Databases
Proceedings of the Second International Conference on Data Engineering
Extending object-oriented databases for fuzzy information modeling
Information Systems - Databases: Creation, management and utilization
Modeling and Management of Fuzzy Information in Multimedia Database Applications
Multimedia Tools and Applications
Retrieving images in fuzzy object-relational databases using dominant color descriptors
Fuzzy Sets and Systems
Fuzzy clustering approach for accurate embedding dimension identification in chaotic time series
Integrated Computer-Aided Engineering
Fuzzy XML data modeling with the UML and relational data models
Data & Knowledge Engineering
Autonomous and cooperative robotic behavior based on fuzzy logic and genetic programming
Integrated Computer-Aided Engineering
Using fuzzy cognitive maps to identify multiple causes in troubleshooting systems
Integrated Computer-Aided Engineering
STEP implementation of imperfect EXPRESS model in fuzzy object-oriented databases
Fuzzy Sets and Systems
A multi-criteria optimization framework for industrial shop scheduling using fuzzy set theory
Integrated Computer-Aided Engineering
SysML to UML model transformation for test generation purpose
ACM SIGSOFT Software Engineering Notes
Extracting knowledge from fuzzy relational databases with description logic
Integrated Computer-Aided Engineering
Fuzzy information modeling in UML class diagram and relational database models
Applied Soft Computing
Integrated Computer-Aided Engineering - Data Mining in Engineering
Recurrent neural networks for fuzzy data
Integrated Computer-Aided Engineering - Data Mining in Engineering
Using formal methods with SysML in aerospace design and engineering
Annals of Mathematics and Artificial Intelligence
Uncertainty management issues in the object-oriented data model
IEEE Transactions on Fuzzy Systems
Relaxing constraints in enhanced entity-relationship models using fuzzy quantifiers
IEEE Transactions on Fuzzy Systems
Comparison of entity with fuzzy data types in fuzzy object-oriented databases
Integrated Computer-Aided Engineering
Integrated Computer-Aided Engineering
Integrated Computer-Aided Engineering
Extending engineering data model for web-based fuzzy information modeling
Integrated Computer-Aided Engineering
Querying fuzzy spatiotemporal data using XQuery
Integrated Computer-Aided Engineering
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Conceptual data modeling is essential for engineering applications. IDEF1X Integration Definition for Information Modeling data model provides a formal framework for consistent modeling of the data necessary for the integration of various functional areas and its basic idea has been extensively applied in current industry. Information in real-world applications is often vague or ambiguous. Fuzziness is inherent in many engineering activities. In order to completely model fuzzy engineering information at different abstraction levels of data model, object instances and attribute values in the IDEF1X data model, this paper introduces three levels of fuzziness into the IDEF1X data model, and the formal descriptions and the corresponding graphical representations are hereby presented. The formal transformation from the fuzzy IDEF1X data model to the fuzzy object-oriented database model is investigated. The formal transformation approaches proposed in the paper are demonstrated with examples.