Generalizing database relational algebra for the treatment of incomplete or uncertain information and vague queries
References (36)
- et al.
A fuzzy representation of data for relational databases
Fuzzy Sets and Systems
(1982) - et al.
Ranking fuzzy numbers in the setting of possibility theory
Inform. Sci.
(1983) - et al.
Unfair coins and necessity measures. A possibilistic interpretation of histograms
Fuzzy Sets and Systems
(1983) Partial values in a tabular database
Inform. Process. Lett.
(1979)Lipski's approach to incomplete information databases restated and generalized in the setting of Zadeh's possibility theory
Inform. Systems
(1984)Fuzzy sets
Inform. and Control
(1965)The concept of a linguistic variable and its application to approximate reasoning
Inform. Sci.
(1975)The concept of a linguistic variable and its application to approximate reasoning
Inform. Sci.
(1975)The concept of a linguistic variable and its application to approximate reasoning
Inform. Sci.
(1975)Fuzzy sets as a basis for a theory of possibility
Fuzzy Sets and Systems
(1978)pruf: A meaning representation language for natural languages
Internat. J. Man-Machine Studies
(1978)Test-score semantics for natural languages and meaning representation via pruf
A fuzzy relational inference language for expert systems
A formal approach to null values in database relations
Fuzzy databases and their applications
Possibility and necessity in a pattern matching process
Fuzzy pattern matching
Kyberntes
(1982)
Extending the database relational model to capture more meaning
ACM Trans. Database Systems
(1979)
An Introduction to Data Base Systems
(1977)
Fuzzy Sets and Systems: Theory and Applications
(1980)
Cited by (424)
RL-instances: An alternative to conjunctive fuzzy sets of tuples for flexible querying in relational databases
2022, Fuzzy Sets and SystemsCitation Excerpt :Degrees allow to qualify membership and possibility in the conjunctive and disjunctive uses, respectively. On its turn, the disjunctive use has been extensively employed in order to express the uncertainty about the value of attributes in tuples, by means of fuzzy sets representing possibility distributions [46,8,7,35,50,43]. Some models have integrated both uses [3,32,24].
Data modeling and querying with fuzzy sets: A systematic survey
2022, Fuzzy Sets and SystemsIndexing possibilistic numerical data using Interval B<sup>+</sup>-trees
2021, Fuzzy Sets and SystemsFuzzy Spatiotemporal Data Modeling and Operations in RDF
2022, Information (Switzerland)
Copyright © 1984 Published by Elsevier Inc.