Sciweavers

2858 search results - page 452 / 572
» Logics with Aggregate Operators
Sort
View
ISN
2000
Springer
120views Communications» more  ISN 2000»
15 years 10 months ago
Providing Customisable Network Management Services Through Mobile Agents
Telecommunications network management has attracted a lot of attention in terms of research and standardisation in the last decade. TMN and TINA architectural frameworks try to add...
David Griffin, George Pavlou, Panos Georgatsos
VLDB
1991
ACM
126views Database» more  VLDB 1991»
15 years 9 months ago
Deriving Production Rules for Incremental View Maintenance
It is widely recognized that production rules in database systems can be used to automatically maintain derived data such as views. However, writing a correct set of rules for e ci...
Stefano Ceri, Jennifer Widom
AAAI
2008
15 years 8 months ago
Horn Complements: Towards Horn-to-Horn Belief Revision
Horn-to-Horn belief revision asks for the revision of a Horn knowledge base such that the revised knowledge base is also Horn. Horn knowledge bases are important whenever one is c...
Marina Langlois, Robert H. Sloan, Balázs Sz...
FLOPS
2008
Springer
15 years 7 months ago
Formalizing a Constraint Deductive Database Language Based on Hereditary Harrop Formulas with Negation
In this paper, we present an extension of the scheme HH(C) (Hereditary Harrop formulas with Constraints) with a suitable formulation of negation in order to obtain a constraint ded...
Susana Nieva, Jaime Sánchez-Hernánde...
OSDI
2000
ACM
15 years 7 months ago
Towards Higher Disk Head Utilization: Extracting "Free" Bandwidth from Busy Disk Drives
Freeblock scheduling is a new approach to utilizing more of disks' potential media bandwidths. By filling rotational latency periods with useful media transfers, 20{50% of a ...
Christopher R. Lumb, Jiri Schindler, Gregory R. Ga...