Results 21 to 30 of about 3,203 (298)

Maintaining Constrained Transitive Closure by Conjunctive Queries [PDF]

open access: yes, 1997
Recently there has been considerable effort on the maintenance of database views in general, and of deductive database views in particular. Such work considered the incremental maintenance of deductive views defined by expensive database queries ...
Dong, Guozhu, Ramamohanarao, Kotagiri
core   +1 more source

Parallel transitive closure computation in relational databases [PDF]

open access: yes, 1996
The transitive closure operation is an important extension to relational algebra. Because of its high computation cost, it is of great interest to design efficient parallel algorithms for computing the transitive closure in relational database systems ...
Orlowska, Maria E.   +2 more
core   +3 more sources

Tree Canonization and Transitive Closure

open access: yesInformation and Computation, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Etessami, E, Immerman, N
openaire   +2 more sources

On the Transitive Closure over Distributive Lattices [PDF]

open access: yes, 2011
Since the transitive closure of a lattice matrix can be used to analyze the maximum road of network of traffic control and logistics, the study of the transitive closure of a lattice matrix is valua- ble.
Lan Shu, Xin An Tian, Jing Jiang
core   +1 more source

Finding the Transitive Closure of Functional Dependencies using Strategic Port Graph Rewriting [PDF]

open access: yesElectronic Proceedings in Theoretical Computer Science, 2019
We present a new approach to the logical design of relational databases, based on strategic port graph rewriting. We show how to model relational schemata as attributed port graphs and provide port graph rewriting rules to perform computations on ...
János Varga
doaj   +1 more source

On the Power of Deterministic Transitive Closures

open access: yesInformation and Computation, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Erich Grädel, Gregory L. McColm
openaire   +2 more sources

Transitive closure calibration. [PDF]

open access: yes, 2015
Area under Receiver Operating Characteristic (ROC) curve of two classifiers, random forests (RF) and k-nearest neighbors (k-NN) on the ideological classification task.Transitive closure calibration.
Johan Bollen (262505)   +5 more
core   +1 more source

On Invoking Transitivity to Enhance the Pursuit-Oriented Object Migration Automata

open access: yesIEEE Access, 2018
From the earliest studies in graph theory, the phenomenon of transitivity has been used to design and analyze problems that can be mapped onto graphs. Some of the practical examples of this phenomenon are the “Transitive Closure”algorithm ...
Abdolreza Shirvani, B. John Oommen
doaj   +1 more source

On Generalized Transitive Matrices

open access: yesJournal of Applied Mathematics, 2011
Transitivity of generalized fuzzy matrices over a special type of semiring is considered. The semiring is called incline algebra which generalizes Boolean algebra, fuzzy algebra, and distributive lattice.
Jing Jiang, Lan Shu, Xinan Tian
doaj   +1 more source

Merotopies associated with quasi-uniformities

open access: yesApplied General Topology, 2000
To an arbitrary quasi-uniformity on the set X, a merotopy on X is assigned. There are results concerning the question whether this merotopy is compatible with the topology induced by the quasi-uniformity end whether the closure operation induced by the ...
Ákos Császár
doaj   +1 more source

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