Sciweavers

289 search results - page 9 / 58
» Control of an Extensible Query Optimizer: A Planning-Based A...
Sort
View
KR
2004
Springer
14 years 1 months ago
Inferential Complexity Control for Model-Based Abduction
We describe a technique for speeding up inference for model-based abduction tasks that trades off inference time and/or space for the fraction of queries correctly answered. We co...
Gregory M. Provan
ICDE
2007
IEEE
117views Database» more  ICDE 2007»
14 years 9 months ago
Unnesting Scalar SQL Queries in the Presence of Disjunction
Optimizing nested queries is an intricate problem. It becomes even harder if in a nested query the linking predicate or the correlation predicate occurs disjunctively. We present ...
Matthias Brantner, Norman May, Guido Moerkotte
COOPIS
2004
IEEE
13 years 11 months ago
Refresco: Improving Query Performance Through Freshness Control in a Database Cluster
Abstract. We consider the use of a cluster system for managing autonomous databases. In order to improve the performance of read-only queries, we strive to exploit user requirement...
Cécile Le Pape, Stéphane Ganç...
GLOBECOM
2007
IEEE
14 years 2 months ago
Directional MAC for 60 GHz Using Polarization Diversity Extension (DMAC-PDX)
— This paper proposes a directional medium access control (DMAC) algorithm for wireless communication networks operating in the 60 GHz bands. Wireless communications using the 60...
Ferhat Yildirim, Huaping Liu
HT
1996
ACM
13 years 11 months ago
The HyperDisco Approach to Open Hypermedia Systems
Computing support forlargeengineeringenterprisesprovides an example of the need for hypermedia-based collaborative computing systems composed of a large number of distributed hete...
Uffe Kock Wiil, John J. Leggett