Evidential support logic programming
Fuzzy Sets and Systems
Fuzzy functional dependencies and lossless join decomposition of fuzzy relational database systems
ACM Transactions on Database Systems (TODS)
An analysis of first-order logics of probability
Artificial Intelligence
A probabilistic object-oriented data model
Data & Knowledge Engineering
Probabilistic deductive databases
ILPS '94 Proceedings of the 1994 International Symposium on Logic programming
A probabilistic spatial data model
Information Sciences: an International Journal
A probabilistic relational model and algebra
ACM Transactions on Database Systems (TODS)
A probabilistic relational algebra for the integration of information retrieval and database systems
ACM Transactions on Information Systems (TOIS)
Query evaluation in probabilistic relational databases
Selected papers from the international workshop on Uncertainty in databases and deductive systems
ProbView: a flexible probabilistic database system
ACM Transactions on Database Systems (TODS)
Fuzzy queries in multimedia database systems
PODS '98 Proceedings of the seventeenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
PSQL: a query language for probabilistic relational data
Data & Knowledge Engineering - Special issue on ER '97
Foundations of Databases: The Logical Level
Foundations of Databases: The Logical Level
Computers and Intractability; A Guide to the Theory of NP-Completeness
Computers and Intractability; A Guide to the Theory of NP-Completeness
The Management of Probabilistic Data
IEEE Transactions on Knowledge and Data Engineering
An Algebra for Probabilistic Databases
IEEE Transactions on Knowledge and Data Engineering
The Theory of Probabilistic Databases
VLDB '87 Proceedings of the 13th International Conference on Very Large Data Bases
Data Structures for an Integrated Data Base Management and Information Retrieval System
VLDB '82 Proceedings of the 8th International Conference on Very Large Data Bases
Probabilistic deduction with conditional constraints over basic events
Journal of Artificial Intelligence Research
Non-commutativity and Expressive Deductive Logic Databases
JELIA '02 Proceedings of the European Conference on Logics in Artificial Intelligence
P-SHOQ(D): A Probabilistic Extension of SHOQ(D) for Probabilistic Ontologies in the Semantic Web
JELIA '02 Proceedings of the European Conference on Logics in Artificial Intelligence
A Probabilistic XML Approach to Data Integration
ICDE '05 Proceedings of the 21st International Conference on Data Engineering
Heterogeneous temporal probabilistic agents
ACM Transactions on Computational Logic (TOCL)
A Logical Formulation of Probabilistic Spatial Databases
IEEE Transactions on Knowledge and Data Engineering
Probabilistic ontologies and relational databases
OTM'05 Proceedings of the 2005 Confederated international conference on On the Move to Meaningful Internet Systems - Volume >Part I
Hi-index | 0.00 |
We present a probabilistic data model for complex values. More precisely, we introduce probabilistic complex value relations, which combine the concept of probabilistic relations with the idea of complex values in a uniform framework. We elaborate a model-theoretic definition of probabilistic combination strategies, which has a rigorous foundation on probability theory. We then define an algebra for querying database instances, which comprises the operations of selection, projection, renaming, join, Cartesian product, union, intersection, and difference. We prove that our data model and algebra for probabilistic complex values generalizes the classical relational data model and algebra. Moreover, we show that under certain assumptions, all our algebraic operations are tractable. We finally show that most of the query equivalences of classical relational algebra carry over to our algebra on probabilistic complex value relations. Hence, query optimization techniques for classical relational algebra can easily be applied to optimize queries on probabilistic complex value relations.